Free Mathematics Books

Here is an unordered list of online mathematics books, textbooks, monographs, lecture notes, and other mathematics related documents freely available on the web. I tried to select only the works in book formats, "real" books that are mainly in PDF format, so many well-known html-based mathematics web pages and online tutorials are left out. Click here if you prefer a categorized directory of mathematics books. The list is updated on a daily basis, so, if you want to bookmark this page, use one of the buttons below.

1. An Introduction to Higher Mathematics
   Patrick Keef, David Guichard, Russ Gordon | Whitman College, Published in 2010, 144 pages
2. Class Field Theory
   J. S. Milne | , Published in 2008, 287 pages
3. Unsolved Problems in Virtual Knot Theory and Combinatorial Knot Theory
   R. Fenn, D.P. Ilyutko, L.H. Kauffman, V.O. Manturov | arXiv, Published in 2014, 66 pages
4. Notes on String Topology
   Ralph L. Cohen, Alexander A. Voronov | arXiv, Published in 2005, 95 pages
5. A Mathematicians Miscellany
   J. E. Littlewood | Methuen And Company Limited, Published in 1953, 152 pages
6. A Problem Course in Mathematical Logic
   Stefan Bilaniuk | , Published in 2003, 166 pages
7. Advanced Problems in Mathematics: Preparing for University
   Stephen Siklos | Open Book Publishers, Published in 2016, 189 pages
8. Lectures on the Theory of Algebraic Functions of One Variable
   M. Deuring | Tata Institute of Fundamental Research, Published in 1959, 154 pages
9. Riemannian Submanifolds: A Survey
   Bang-Yen Chen | arXiv, Published in 2013, 272 pages
10. Computational Category Theory
    D.E. Rydeheard, R.M. Burstall | , Published in 2001, 263 pages
11. Frobenius Splitting in Commutative Algebra
    Karen E. Smith, Wenliang Zhang | arXiv, Published in 2014, 53 pages
12. Markov Chains and Mixing Times
    D. A. Levin, Y. Peres, E. L. Wilmer | American Mathematical Society, Published in 2008, 387 pages
13. A Second Course in Elementary Ordinary Differential Equations
    Marcel B. Finan | Arkansas Tech University, Published in 2006, 201 pages
14. Lectures on Siegel Modular Forms and Representation by Quadratic Forms
    Y. Kitaoka | Tata Institute of Fundamental Research, Published in 1986, 197 pages
15. Interacting Particle Systems
    Stefan Grosskinsky | University of Warwick, Published in 2009, 56 pages
16. Introduction to Representations of Real Semisimple Lie Groups
    Matvei Libine | arXiv, Published in 2012, 132 pages
17. Armstrong Calculus
    Jared Schlieper, Michael Tiemeyer | GALILEO, University System of Georgia, Published in 2015, 110 pages
18. Proofs and Types
    J. Girard, Y. Lafont, P. Taylor | Cambridge University Press, Published in 1989, 183 pages
19. The Smarandache Function
    C. Dumitrescu, V. Seleacu | Erhus University Press, Published in 1996, 137 pages
20. Abstract Algebra for Polynomial Operations
    Maya Mohsin Ahmed | , Published in 2009, 210 pages
21. Markov Chains and Stochastic Stability
    S.P. Meyn, R.L. Tweedie | Springer, Published in 2005, 567 pages
22. Amusements in Mathematics
    Henry Ernest Dudeney | Nelson, Published in 1917, 280 pages
23. Everything you wanted to know about Data Analysis and Fitting
    Peter Young | arXiv, Published in 2012, 55 pages
24. A First Course in Linear Algebra
    Robert A. Beezer | University of Puget Sound, Published in 2010, 1035 pages
25. College Algebra
    Carl Stitz, Jeff Zeager | , Published in 2013, 716 pages
26. Advanced Data Analysis from an Elementary Point of View
    Cosma Rohilla Shalizi | Cambridge University Press, Published in 2013, 586 pages
27. Integral Operators
    Leif Mejlbro | BookBoon, Published in 2009, 66 pages
28. Basic Analysis Gently Done: Topological Vector Spaces
    Ivan F. Wilde | King's College, London, Published in 2010, 129 pages
29. Category Theory for Computing Science
    Michael Barr, Charles Wells | Prentice Hall, Published in 1998, 544 pages
30. A Semester Course in Trigonometry
    Marcel B. Finan | Arkansas Tech University, Published in 2003, 264 pages
31. Lectures on Curves on Rational and Unirational Surfaces
    Masayoshi Miyanishi | Tata Institute of Fundamental Research, Published in 1978, 267 pages
32. Applied Multivariate Statistical Analysis
    Wolfgang K. Hardle, Leopold Simar | Springer, Published in 2003, 488 pages
33. Exposition of the Theory of Chances and Probabilities
    A. A. Cournot | arXiv.org, Published in 2013, 216 pages
34. Synthetic Differential Geometry
    Anders Kock | Cambridge University Press, Published in 2006, 241 pages
35. Nonlinear Parameter Estimation: An Integrated System in Basic
    John C. Nash | Marcel Dekker Inc, Published in 1995, 493 pages
36. Complex Manifolds
    Julius Ross | Stanford University, Published in 2014, 119 pages
37. Several Complex Variables
    Michael Schneider, Yum-Tong Siu | Cambridge University Press, Published in 1999, 564 pages
38. Non-Euclidean Geometry
    Henry Manning | Ginn and Company, Published in 1901, 93 pages
39. Think Bayes: Bayesian Statistics Made Simple
    Allen B. Downey | Green Tea Press, Published in 2012, 77 pages
40. High-dimensional Knot Theory
    Andrew Ranicki | Springer, Published in 1998, 693 pages
41. Lectures on Shimura Varieties
    A. Genestier, B.C. Ngo | , Published in 2006, 50 pages
42. Mathematics for the Practical Man
    George Howe | Van Nostrand, Published in 1918, 221 pages
43. Lectures on Expansion Techniques In Algebraic Geometry
    S.S. Abhyankar | Tata Institute Of Fundamental Research, Published in 1977, 169 pages
44. Algebraic General Topology
    Victor Porton | Mathematics21.org, Published in 2015, 349 pages
45. Think Stats: Probability and Statistics for Programmers
    Allen B. Downey | Green Tea Press, Published in 2011, 122 pages
46. Templates for the Solution of Linear Systems
    Richard Barrett et al. | Society for Industrial Mathematics, Published in 1987, 117 pages
47. A Century of Mathematics in America
    Peter Duren, Richard A. Askey | American Mathematical Society, Published in 1988
48. Mathematical Methods for Economic Theory: a tutorial
    Martin J. Osborne | University of Toronto, Published in 2007, 301 pages
49. Learning Statistics with R
    Daniel Navarro | University of Adelaide, Published in 2014, 564 pages
50. Aesthetics for the Working Mathematician
    Jonathan M. Borwein | DocServer, Published in 2001, 22 pages
51. An Introduction to the Lie Theory of One-Parameter Groups
    Abraham Cohen | D.C. Heath & co, Published in 1911, 276 pages
52. Surgery on Compact Manifolds
    C.T.C. Wall, A. A. Ranicki | American Mathematical Society, Published in 1999, 314 pages
53. Lectures on Introduction to Algebraic Topology
    G. de Rham | Tata Institute of Fundamental Research, Published in 1969, 71 pages
54. Very Basic Noncommutative Geometry
    Masoud Khalkhali | University of Western Ontario, Published in 2004, 104 pages
55. The Hauptvermutung Book: A Collection of Papers on the Topology of Manifolds
    A.A. Ranicki, et al, | Springer, Published in 1996, 194 pages
56. An Introduction to Hilbert Module Approach to Multivariable Operator Theory
    Jaydeb Sarkar | arXiv, Published in 2013, 52 pages
57. Differential Forms and Cohomology: Course
    Peter Saveliev | Intelligent Perception, Published in 2013, 300 pages
58. Functions and Their Graphs
    J. Nicholas, J. Hunter, J. Hargreaves | University of Sydney, Published in 1997, 77 pages
59. Trends in Commutative Algebra
    Luchezar L. Avramov, at al. | Cambridge University Press, Published in 2005, 264 pages
60. Advanced High School Statistics
    David M Diez, et al. | OpenIntro, Published in 2017, 458 pages
61. Synthetic Geometry of Manifolds
    Anders Kock | University of Aarhus, Published in 2009, 314 pages
62. The Geometry of Iterated Loop Spaces
    J. P. May | Springer, Published in 1972, 175 pages
63. Algebra: Abstract and Concrete
    Frederick M. Goodman | Semisimple Press, Published in 2015, 587 pages
64. Differential Equations and Linear Algebra
    Simon J.A. Malham | Heriot-Watt University, Published in 2010, 95 pages
65. Hilbert Spaces and Operators on Hilbert Spaces
    Leif Mejlbro | BookBoon, Published in 2009, 109 pages
66. Lectures on Statistics
    Robert B. Ash | University of Illinois, Published in 2007
67. Elementary Abstract Algebra: Examples and Applications
    Justin Hill, Chris Thron | Texas A&M University, Published in 2017, 785 pages
68. Some Fundamental Theorems in Mathematics
    Oliver Knill | arXiv.org, Published in 2018, 133 pages
69. Modular Functions and Modular Forms
    J. S. Milne | , Published in 2009, 129 pages
70. Essays on the Theory of Numbers
    Richard Dedekind | The Open Court Publishing, Published in 1901, 78 pages
71. Introduction to the Theory of Statistics
    A. M. Mood, F. A. Graybill, D. C. Boes | McGraw-Hill, Published in 1974, 577 pages
72. Mirror Symmetry
    Cumrun Vafa, Eric Zaslow | American Mathematical Society, Published in 2003, 950 pages
73. Abstract Algebra I
    Marcel B. Finan | Arkansas Tech University, Published in 2004
74. Statistical Tools for Economists
    Daniel McFadden | University of California, Berkeley, Published in 2001
75. Galois Theory
    Miles Reid | University of Warwick, Published in 2004, 89 pages
76. Projective Geometry
    Nigel Hitchin | , Published in 2003, 74 pages
77. Mathematical Principals of Dynamic Systems and the Foundations of Quantum Physics
    Eric Tesse | arXiv, Published in 2011, 87 pages
78. The Calculus for Engineers and Physicists
    Robert H. Smith | Griffin, Published in 1908, 268 pages
79. Lectures on Exterior Differential Systems
    M. Kuranishi | Tata Institute of Fundamental Research, Published in 1962, 117 pages
80. Probability and Statistics for Geophysical Processes
    D. Koutsoyiannis | National Technical University of Athens, Published in 2008, 161 pages
81. Robust Optimization
    A. Ben-Tal, L. El Ghaoui, A. Nemirovski | Princeton University Press, Published in 2009, 564 pages
82. Integration and Differential Equations
    R.S. Johnson | BookBoon, Published in 2012, 122 pages
83. Probability
    Douglas Kennedy | Trinity College, Published in 2010, 78 pages
84. The Game of Logic
    Lewis Carroll | MacMillan, Published in 1887, 128 pages
85. Fractals
    | Wikibooks, Published in 2013
86. High School Mathematics Extensions
    Zhuo Jia Dai, Martin Warmer, Tom Lam | Wikibooks, Published in 2008, 250 pages
87. Difference Equations to Differential Equations - An introduction to calculus
    Dan Sloughter | , Published in 2000, 599 pages
88. The Foundations of Analysis
    Larry Clifton | arXiv, Published in 2013, 48 pages
89. Introduction to the Numerical Integration of PDEs
    B. Piette | University of Durham, Published in 2004, 89 pages
90. Beginning Statistics
    Douglas S. Shafer, Zhiyi Zhang | lardbucket.org, Published in 2014, 716 pages
91. Geometry for Elementary School
    | Wikibooks, Published in 2007, 72 pages
92. Lectures on Probability, Statistics and Econometrics
    Marco Taboga | statlect.com, Published in 2010
93. Tensors and Relativity
    Peter Dunsby | , Published in 2004, 203 pages
94. Geometric Theorems and Arithmetic Functions
    Jozsef Sandor | American Research Press, Published in 2002, 55 pages
95. Art Gallery Theorems and Algorithms
    Joseph O'Rourke | Oxford University Press, Published in 1987, 296 pages
96. Convex Bodies and Algebraic Geometry
    Tadao Oda | Springer, Published in 1988, 219 pages
97. Handbook of Modal Logic
    Patrick Blackburn, Johan van Benthem, Frank Wolter | , Published in 2006, 1260 pages
98. Quick Tour of the Topology of R
    StevenHurder, DaveMarker | University of Illinois at Chicago, Published in 2003, 48 pages
99. Modern Algebraic Topology
    D. G. Bourgin | Macmillan, Published in 1963, 544 pages
100. Elliptic Integrals
     Harris Hancock | J. Wiley, Published in 1917, 118 pages
101. Super Special Codes using Super Matrices
     W.B.V. Kandasamy, F. Smarandache, K.Ilanthenral | arXiv, Published in 2010, 161 pages
102. Perturbation Theory of Dynamical Systems
     Nils Berglund | arXiv, Published in 2001, 111 pages
103. Basic Real Analysis
     Anthony W. Knapp | Birkhäuser, Published in 2016, 840 pages
104. Optimization Algorithms: Methods and Applications
     Ozgur Baskan (ed.) | InTech, Published in 2016, 322 pages
105. A Tour of Triangle Geometry
     Paul Yiu | Florida Atlantic University, Published in 2005, 52 pages
106. E 'Infinite' Ring Spaces and E 'Infinite' Ring Spectra
     J. P. May | Springer, Published in 1977, 280 pages
107. Symmetry and Separation of Variables
     Willard Miller | Addison-Wesley, Published in 1977, 318 pages
108. Algebraic and Geometric Surgery
     Andrew Ranicki | Oxford University Press, Published in 2002, 380 pages
109. Tabletop: Analog Game Design
     Greg Costikyan, Drew Davidson | , Published in 2011, 206 pages
110. Theory of Functions of a Complex Variable
     Heinrich Burkhardt | D. C. Heath, Published in 1913, 456 pages
111. First Book in Arithmetic
     | W.W. Shannon, Published in 1905, 268 pages
112. The Millennium Prize Problems
     J. Carlson, A. Jaffe, A. Wiles | American Mathematical Society, Published in 2006, 139 pages
113. Set Linear Algebra and Set Fuzzy Linear Algebra
     W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | InfoLearnQuest, Published in 2008, 345 pages
114. Groupoids and Smarandache Groupoids
     W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 115 pages
115. Lectures on Topics In One-Parameter Bifurcation Problems
     P. Rabier | Tata Institute of Fundamental Research, Published in 1985, 238 pages
116. Frobenius Splittings and B-Modules
     Wilberd van der Kallen | Springer, Published in 1993, 112 pages
117. Euclidean Plane and Its Relatives
     Anton Petrunin | , Published in 2017, 201 pages
118. A Tangled Tale
     Lewis Carroll | Macmillan and Co., Published in 1885, 192 pages
119. Lectures on Elliptic Partial Differential Equations
     J.L. Lions | Tata Institute of Fundamental Research, Published in 1957, 121 pages
120. Euclid and His Twentieth Century Rivals
     Nathaniel Miller | , Published in 2007, 124 pages
121. Introduction to Statistical Thought
     Michael Lavine | , Published in 2008, 434 pages
122. Higher Topos Theory
     Jacob Lurie | Princeton University Press, Published in 2009, 943 pages
123. Combinatory Analysis
     Percy A. MacMahon | Cambridge University Press, Published in 1915, 612 pages
124. Elements of Applied Mathematics
     Cobb Herbert E. | Ginn and Company, Published in 1911, 292 pages
125. Introduction to Groups, Invariants and Particles
     Frank W. K. Firk | Orange Grove Texts Plus, Published in 2000, 162 pages
126. Why are Braids Orderable?
     Patrick Dehornoy, at al. | , Published in 2010, 206 pages
127. Surveys in Noncommutative Geometry
     Nigel Higson, John Roe | American Mathematical Society, Published in 2006, 208 pages
128. Why the Boundary of a Round Drop Becomes a Curve of Order Four
     A. N. Varchenko, P. I. Etingof | American Mathematical Society, Published in 1992, 72 pages
129. Lie Groups in Physics
     G. 't Hooft, M. J. G. Veltman | Utrecht University, Published in 2007, 75 pages
130. Hilbert Space Methods for Partial Differential Equations
     R. E. Showalter | Pitman, Published in 1994, 208 pages
131. Operator Algebras and Quantum Statistical Mechanics
     Ola Bratteli, Derek W. Robinson | Springer, Published in 2003, 505 pages
132. The Elements of Solid Geometry
     William C. Bartol | Leach, Shewell & Sanborn, Published in 1893, 112 pages
133. Real Harmonic Analysis
     Pascal Auscher, Lashi Bandara | ANU eView, Published in 2012, 113 pages
134. Lectures on Minimal Surface Theory
     Brian White | arXiv, Published in 2013, 46 pages
135. Notes on Diffy Qs: Differential Equations for Engineers
     Jiří Lebl | Lulu.com, Published in 2017, 371 pages
136. Quick Notes - Statistics
     Walter Antoniotti | 21st Century Learning Products, Published in 2001, 271 pages
137. Descriptive Set Theory
     David Marker | University of Illinois at Chicago, Published in 2002, 105 pages
138. Analysis on Homogeneous Spaces
     Ralph Howard | Royal Institute of Technology Stockholm, Published in 1994, 108 pages
139. Symbolic Logic: A First Course
     Gary Hardegree | Mcgraw-Hill College, Published in 1999, 468 pages
140. Topology of Numbers
     Allen Hatcher | Cornell University, Published in 2014, 122 pages
141. Ordinary Differential Equations
     Wong Yan Loi | National University of Singapore, Published in 2013, 121 pages
142. Manifolds and Differential Forms
     Reyer Sjamaar | Cornell University, Published in 2017, 171 pages
143. Introduction to Real Analysis
     William F. Trench | Prentice Hall, Published in 2003, 583 pages
144. Elementary Symbolic Dynamics and Chaos in Dissipative Systems
     Bai-Lin Hao | World Scientific, Published in 1989, 475 pages
145. Applied Combinatorics
     Mitchel T. Keller, William T. Trotter | Georgia Institute of Technology, Published in 2013, 345 pages
146. Current Topics in Complex Algebraic Geometry
     Herbert Clemens, János Kollár | Cambridge University Press, Published in 1996, 172 pages
147. Geometry of Four Dimensions
     Parker Manning Henry | The MacMillan Company, Published in 1914, 378 pages
148. Category Theory for Programmers
     Bartosz Milewski | unglue.it, Published in 2017, 510 pages
149. Lectures on the History of Mathematics
     G. Donald Allen | Texas A&M University, Published in 2003
150. Lectures on Optimization: Theory and Algorithms
     John Cea | Tata Institute of Fundamental Research, Published in 1978, 237 pages
151. The Modern Geometry of the Triangle
     William Gallatly | F. Hodgson, Published in 1914, 126 pages
152. The Basics of Financial Mathematics
     Richard F. Bass | , Published in 2003, 106 pages
153. Lectures on Field Theory and Ramification Theory
     Sudhir R. Ghorpade | Indian Institute of Technology, Bombay, Published in 2008, 36 pages
154. Mathematical Omnibus: Thirty Lectures on Classic Mathematics
     Dmitry Fuchs, Sergei Tabachnikov | American Mathematical Society, Published in 2007, 465 pages
155. Foundations of Infinitesimal Calculus
     K.D. Stroyan | Academic Press, Inc., Published in 1997, 182 pages
156. Geometry of 2D Topological Field Theories
     Boris Dubrovin | arXiv, Published in 1994, 204 pages
157. Recreations in Mathematics
     H E. Licks | D. Van Nostrand Company, Published in 1917, 163 pages
158. Category Theory for the Sciences
     David I. Spivak | The MIT Press, Published in 2014, 496 pages
159. Abstract Set Theory
     Thoralf A. Skolem | University of Notre Dame, Published in 1962, 70 pages
160. Open Trigonometry: Basic to Advanced
     | Wikibooks, Published in 2014, 51 pages
161. Mathematics and Physics of Emerging Biomedical Imaging
     National Research Council | National Academies Press, Published in 1996, 238 pages
162. Lectures on Siegel's Modular Functions
     H. Maass | Tata Institute of Fundamental Research, Published in 1955, 286 pages
163. Numerical Recipes in Fortran 90
     William H. Press, at al. | Cambridge University Press, Published in 1996, 500 pages
164. Trigonometry
     Michael Corral | mecmath.net, Published in 2009, 174 pages
165. Linear Algebra with Applications
     W. Keith Nicholson | Lyryx, Published in 2018, 698 pages
166. The Geometry of Vector Calculus
     Tevian Dray, Corinne A. Manogue | Oregon State University, Published in 2012, 325 pages
167. Ricci-Hamilton Flow on Surfaces
     Li Ma | Tsinghua University, Published in 2003, 128 pages
168. Robust Geometric Computation
     Kurt Mehlhorn, Chee Yap | New York University, Published in 2004
169. Natural Operations in Differential Geometry
     Ivan Kolar, Peter W. Michor, Jan Slovak | Springer, Published in 1993, 437 pages
170. Distribution of Prime Numbers
     W W L Chen | Macquarie University, Published in 2003, 134 pages
171. Introduction to Abstract Algebra
     D. S. Malik, John N. Mordeson, M.K. Sen | Creighton University, Published in 2007, 276 pages
172. Higher Geometry: an introduction to advanced methods in analytic geometry
     Frederick S. Woods | Ginn & Co., Published in 1922, 450 pages
173. The Handbook of Essential Mathematics
     John C. Sparks | Air Force Publication, Published in 2006, 205 pages
174. Basic Algebra
     Anthony W. Knapp | , Published in 2016, 762 pages
175. An Introduction to High Dimensional Knots
     Eiji Ogasa | arXiv, Published in 2013, 92 pages
176. Riemann Surfaces, Dynamics and Geometry
     Curtis McMullen | Harvard University, Published in 2008, 167 pages
177. Bayesian Methods for Statistical Analysis
     Borek Puza | ANU Press, Published in 2015, 697 pages
178. The First Six Books of the Elements of Euclid
     John Casey, Euclid | Longmans, Green, and Co., Published in 1885, 233 pages
179. Higher Elementary Geometry
     Venugopal | , Published in 1958, 135 pages
180. A Sampler of Riemann-Finsler Geometry
     D. Bao, R. Bryant, S. Chern, Z. Shen | Cambridge University Press, Published in 2004, 376 pages
181. Real Analysis for Graduate Students: Measure and Integration Theory
     Richard F. Bass | CreateSpace, Published in 2011, 206 pages
182. Lectures on Entire Functions
     B. Ya. Levin | American Mathematical Society, Published in 1996, 265 pages
183. An informal introduction to the ideas and concepts of noncommutative geometry
     Thierry Masson | arXiv, Published in 2006, 56 pages
184. Fredholm Operators and Spectral Flow
     Nils Waterstraat | arXiv, Published in 2016, 61 pages
185. Algebraic Problems and Exercises for High School
     I. Goian, R. Grigor, V. Marin, F. Smarandache | The Educational Publisher, Published in 2015, 146 pages
186. Lectures On Approximation By Polynomials
     J.G. Burkill | Tata Institute of Fundamental Research, Published in 1959, 75 pages
187. An Introduction to Microlocal Analysis
     Richard B. Melrose, Gunther Uhlmann | MIT, Published in 2008, 182 pages
188. The Contraction Mapping Principle and Some Applications
     Robert M. Brooks, Klaus Schmitt | American Mathematical Society, Published in 2009, 90 pages
189. Algebraic and Geometric Topology
     Andrew Ranicki, Norman Levitt, Frank Quinn | Springer, Published in 1985, 436 pages
190. Graph Theory Lessons
     Christopher P. Mawata | Math Cove, Published in 2018, 384 pages
191. Essentials of Trigonometry with Applications
     D.R. Curtiss, E.J. Moulton | D. C. Heath And Company, Published in 1942, 190 pages
192. Introduction to Topology
     Alex Kuronya | , Published in 2010, 102 pages
193. Entropy of Compact Group Automorphisms
     Thomas Ward | University of East Anglia, Published in 2001, 84 pages
194. Differential and Integral Equations: Boundary Value Problems and Adjoints
     S. Schwabik, M. Tvrdy, O. Vejvoda | Academia Praha, Published in 1979, 246 pages
195. Scientific Computing
     Jeffrey R. Chasnov | Harvey Mudd College, Published in 2013, 152 pages
196. A First Course in Mathematics Concepts for Elementary School Teachers
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 452 pages
197. Foundations of Analysis
     Joseph L. Taylor | , Published in 2011, 415 pages
198. Lecture Notes on Graph Theory
     Tero Harju | University of Turku, Published in 2011, 100 pages
199. A Primer on Mapping Class Groups
     Benson Farb, Dan Margalit | Princeton University Press, Published in 2011, 509 pages
200. Geometric Complexity Theory: An Introduction for Geometers
     J.M. Landsberg | arXiv, Published in 2013, 38 pages
201. An elementary treatise on Fourier's series and spherical, cylindrical, and ellipsoidal harmonics
     William Elwood Byerly | Ginn and company, Published in 1893, 309 pages
202. Matroid Decomposition
     Klaus Truemper | Leibniz, Published in 1998, 398 pages
203. Analytic Number Theory: A Tribute to Gauss and Dirichlet
     William Duke, Yuri Tschinkel | American Mathematical Society, Published in 2007, 266 pages
204. Mathematical Formula Handbook
     Wu-ting Tsai | National Taiwan University, Published in 2012, 28 pages
205. Applied Mathematics by Example
     Jeremy Pickles | BookBoon, Published in 2010, 164 pages
206. New Frontiers in Graph Theory
     Yagang Zhang (ed.) | InTech, Published in 2012, 526 pages
207. Combinatorial Maps: Tutorial
     Dainis Zeps | Latvian University, Published in 2007, 61 pages
208. An Invitation to Mathematics
     Arnold Dresden | H. Holt and Company, Published in 1936, 453 pages
209. Design, Evaluation and Analysis of Combinatorial Optimization Heuristic Algorithms
     Daniel Karapetyan | arXiv, Published in 2012, 202 pages
210. First Book in General Mathematics
     Frank S. Pugh | P.P. Simmons, Published in 1917, 285 pages
211. Lectures on Differential Geometry
     John Douglas Moore | University of California, Published in 2009, 263 pages
212. Partial Differential Equations for Finance
     Robert V. Kohn | New York University, Published in 2003, 121 pages
213. Functional Analysis
     Feng Tian, Palle E.T. Jorgensen | arXiv, Published in 2010, 98 pages
214. Introduction to Modal Logic
     Gary Hardegree | UMass Amherst, Published in 2009, 275 pages
215. Mathematical Methods
     Mihir Sen, Joseph M. Powers | University of Notre Dame, Published in 2010, 432 pages
216. Finite Group Schemes
     Richard Pink | ETH Zurich, Published in 2005, 78 pages
217. Matrix Analysis
     Steven J Cox | Rice University, Published in 2012, 98 pages
218. An Introduction to Nonlinear Optimization Theory
     Marius Durea, Radu Strugariu | De Gruyter Open, Published in 2014, 328 pages
219. Analytic Combinatorics
     Philippe Flajolet, Robert Sedgewick | Cambridge University Press, Published in 2008, 822 pages
220. Lectures On Unique Factorization Domains
     P. Samuel | Tata Institute Of Fundamental Research, Published in 1964, 68 pages
221. Numerical Solutions of Engineering Problems
     K. Nandakumar | University of Alberta, Published in 1998, 193 pages
222. Topics in Differential Geometry
     Peter W. Michor | American Mathematical Society, Published in 2008, 429 pages
223. Synchronization and Linearity: An Algebra for Discrete Event Systems
     F. Baccelli, G. Cohen, G. J. Olsder, J. Quadrat | John Wiley & Sons, Published in 1993, 501 pages
224. The Adams-Novikov Spectral Sequence and the Homotopy Groups of Spheres
     Paul Goerss | Northwestern University, Published in 2007, 47 pages
225. Axiomatic Set Theory
     Michael Meyling | , Published in 2011, 36 pages
226. n-Linear Algebra of Type I and Its Applications
     W. B. V. Kandasamy, F. Smarandache | InfoLearnQuest, Published in 2008, 120 pages
227. Isometrica: A Geometrical Introduction to Planar Crystallographic Groups
     George Baloglou | , Published in 2007, 473 pages
228. Lie Groups, Physics, and Geometry
     Robert Gilmore | Drexel University, Published in 2007, 222 pages
229. Graduate Algebra
     Leonard Evens | Northwestern University, Published in 1999, 160 pages
230. Computable Integrability
     Alexey Shabat, Elena Kartashova | arXiv, Published in 2011, 174 pages
231. Practical Mathematics
     A.H. Bell | Blackie And Son Limited, Published in 1919, 356 pages
232. Mathematics for Algorithm and Systems Analysis
     Edward A. Bender, S. Gill Williamson | Dover Publications, Published in 2005, 256 pages
233. The Geometry of the Sphere
     John C. Polking | Rice University, Published in 2000, 310 pages
234. Lectures on Lie Groups and Representations of Locally Compact Groups
     F. Bruhat | Tata Institute of Fundamental Research, Published in 1958, 140 pages
235. Basic Concepts of Enriched Category Theory
     Max Kelly | Cambridge University Press, Published in 2005, 143 pages
236. Collaborative Statistics
     Barbara Illowsky, Susan Dean | Illowsky Publising, Published in 2012, 728 pages
237. The Logic Of Chance
     John Venn | Macmillan And Company, Published in 1888, 550 pages
238. Computer analysis of number sequences
     Henry Ibstedt | American Research Press, Published in 1998, 86 pages
239. Calculus I
     Paul Dawkins | Lamar University, Published in 2011, 586 pages
240. The Calculus for Beginners
     John William Mercer | Cambridge University Press, Published in 1914, 470 pages
241. Implementing Mathematics with The Nuprl Proof Development System
     R. L. Constable, at al. | Prentice Hall, Published in 1986
242. Introductory Mathematical Analysis
     W.P. Webber, L.C. Plant | John Wiley & sons, Published in 1919, 332 pages
243. Geometric Models for Noncommutative Algebra
     Ana Cannas da Silva, Alan Weinstein | University of California at Berkeley, Published in 1998, 194 pages
244. Complex Multiplication
     J. S. Milne | , Published in 2006, 113 pages
245. The Philosophy of Mathematics
     Auguste Comte | Harper & brothers, Published in 1851, 276 pages
246. Constructive Geometry
     John G. Kerr | Blackie And Son Limited., Published in 1904, 135 pages
247. An Introduction to Semialgebraic Geometry
     Michel Coste | Universite de Rennes, Published in 2002, 78 pages
248. Introduction to the Theory of Fourier's Series and Integrals
     H. S. Carslaw | Macmillan and co., Published in 1921, 346 pages
249. Programming for Computations - Python
     Svein Linge, Hans Petter Langtangen | Springer, Published in 2016, 232 pages
250. Lecture Notes on Motivic Cohomology
     Carlo Mazza, Vladimir Voevodsky, Charles Weibel | AMS, Published in 2005, 228 pages
251. Calculus and Linear Algebra. Vol. 2
     Wilfred Kaplan, Donald J. Lewis | University of Michigan Library, Published in 2007, 606 pages
252. Handbook of Mathematical Functions
     M. Abramowitz, I. A. Stegun | GPO, Published in 1964, 1046 pages
253. Lectures on Meromorphic Functions
     W.K. Hayman | Tata Institue of Fundamental Research, Published in 1959, 119 pages
254. Statistics for the Social and Behavioral Sciences
     David A. Kenny | Little, Brown, Published in 1987, 407 pages
255. Calculus I, II, and III
     Jerrold E. Marsden, Alan Weinstein | Springer, Published in 1986, 1023 pages
256. Math Made a Bit Easier: Basic Math Explained in Plain English
     Larry Zafran | CreateSpace, Published in 2009, 280 pages
257. Extracting Information from Random Data
     Pawel J. Szablowski | arXiv, Published in 2016, 167 pages
258. Group theory for Maths, Physics and Chemistry
     Arjeh Cohen, Rosane Ushirobira, Jan Draisma | , Published in 2007, 93 pages
259. A Gentle Introduction to the Art of Mathematics
     Joseph Fields | Southern Connecticut State University, Published in 2009, 428 pages
260. The Story of Euclid
     W. B. Frankland | George Newnes, Published in 1902, 183 pages
261. Topology Illustrated
     Peter Saveliev | Intelligent Perception, Published in 2014, 301 pages
262. Elementary Linear Algebra
     Kenneth Kuttler | The Saylor Foundation, Published in 2012, 433 pages
263. An Introduction to Tensors for Students of Physics and Engineering
     Joseph C. Kolecki | Glenn Research Center, Published in 2002, 29 pages
264. An Introduction to Modular Forms
     Henri Cohen | arXiv.org, Published in 2018, 58 pages
265. Group Theory
     J. S. Milne | , Published in 2009, 127 pages
266. Hopf Algebras, Quantum Groups and Yang-Baxter Equations
     Florin Felix Nichita (ed.) | MDPI AG, Published in 2019, 240 pages
267. Introduction to Complex Analysis
     W W L Chen | Macquarie University, Published in 2003, 194 pages
268. Discrete Mathematics
     | Wikibooks, Published in 2012
269. Semi-Riemann Geometry and General Relativity
     Shlomo Sternberg | , Published in 2003, 251 pages
270. C*-algebras
     John Erdos | King's College, London, Published in 2003, 51 pages
271. Introduction to Partial Differential Equations
     Valeriy Serov | University of Oulu, Published in 2011, 122 pages
272. Special Functions, a Review
     S. Arfaoui, I. Rezgui, A.B. Mabrouk | viXra, Published in 2016, 69 pages
273. Higher-Dimensional Categories: an illustrated guide book
     Eugenia Cheng, Aaron Lauda | University of Sheffield, Published in 2004, 182 pages
274. Six Septembers: Mathematics for the Humanist
     Patrick Juola, Stephen Ramsay | Zea Books, Published in 2017, 433 pages
275. Elementary Algebra
     Denny Burzynski, Wade Ellis | Saunders College Publishing, Published in 1989, 544 pages
276. Chebyshev and Fourier Spectral Methods
     John P. Boyd | Dover Publications, Published in 2001, 611 pages
277. Bayesian Spectrum Analysis and Parameter Estimation
     G. Larry Bretthorst | Springer, Published in 1988, 220 pages
278. SPSS: Stats Practically Short and Simple
     Sidney Tyrrell | BookBoon, Published in 2009, 83 pages
279. Euclid's 'Elements' Redux
     Daniel Callahan | starrhorse.com, Published in 2014, 359 pages
280. Theory of Probability: A Historical Essay
     Oscar Sheynin | arXiv.org, Published in 2017, 316 pages
281. Category Theory Lecture Notes
     Michael Barr, Charles Wells | , Published in 1999, 133 pages
282. Greek Geometry from Thales to Euclid
     George Johnston Allman | Dublin University Press, Published in 1877, 248 pages
283. Linear Complementarity, Linear and Nonlinear Programming
     Katta G. Murty | , Published in 1997, 613 pages
284. Philosophy and Fun of Algebra
     Mary Everest Boole | C. W. Daniel, Published in 1891, 56 pages
285. Numerical Methods Course Notes
     Steven E. Pav | University of California at San Diego, Published in 2005, 180 pages
286. A Handbook of Statistics
     Darius Singpurwalla | Bookboon, Published in 2013, 79 pages
287. Introduction to Mathematical Logic: A problem solving course
     Arnold W. Miller | arXiv, Published in 1996, 75 pages
288. Algebraic Geometry over the Complex Numbers
     Donu Arapura | Purdue University, Published in 2009, 234 pages
289. Differential Topology
     Bjorn Ian Dundas | Johns Hopkins University, Published in 2002, 183 pages
290. Introduction to Vectors and Tensors Volume 1: Linear and Multilinear Algebra
     Ray M. Bowen, C.-C.Wang | Springer, Published in 2008, 314 pages
291. Calculus Without Limits
     John C. Sparks | Sparrow Hawk Treasures, Published in 2008, 344 pages
292. Geometry Formulas and Facts
     Silvio Levy | CRC Press, Published in 1995
293. Transmutations and Applications: a survey
     Sergei M. Sitnik | arXiv, Published in 2010, 141 pages
294. Mathematical Statistics
     Henry Lewis Rietz | Open Court Pub. Co, Published in 1927, 208 pages
295. An Introduction to the Theory of Numbers
     Leo Moser | The Trillia Group, Published in 2007, 95 pages
296. Linear Algebra Examples C-1: Linear equations, matrices and determinants
     Leif Mejlbro | BookBoon, Published in 2009, 113 pages
297. Combinatorial Algorithms
     Albert Nijenhuis, Herbert S. Wilf | Academic Press Inc, Published in 1978, 316 pages
298. Functional Analysis with Applications
     Palle Jorgensen, Feng Tian | arXiv, Published in 2014, 338 pages
299. Introduction to Proof Theory
     Gilles Dowek | ESSLLI, Published in 2001, 82 pages
300. Numerical Analysis for Engineering
     Douglas W. Harder, Richard Khoury | University of Waterloo, Published in 2010
301. Mathematical Analysis I
     Elias Zakon | The Trillia Group, Published in 2004, 367 pages
302. Combinatorics Through Guided Discovery
     Kenneth P. Bogart | Dartmouth College, Published in 2004, 202 pages
303. Notes on Introductory Point-Set Topology
     Allen Hatcher | Cornell University, Published in 2011, 53 pages
304. Lectures on Torus Embeddings and Applications
     Tadao Oda | Tata Institute of Fundamental Research, Published in 1978, 158 pages
305. Sam Loyd's Cyclopedia of 5000 Puzzles tricks and Conundrums
     Sam Loyd | The Lamb Publishing Company, Published in 1914, 194 pages
306. An Introduction to Algebraic Number Theory
     F. Oggier | Nanyang Technological University, Published in 2010, 95 pages
307. Theory of the Integral
     Brian S. Thomson | ClassicalRealAnalysis.info, Published in 2012, 407 pages
308. Lectures on Linear Logic
     A. S. Troelstra | CSLI, Published in 1992, 215 pages
309. Introduction to Analysis
     Irena Swanson | Purdue University, Published in 2020, 353 pages
310. Topics in Geometry
     John O'Connor | University of St Andrews, Published in 2003
311. Symbolic Logic: A Second Course
     Gary Hardegree | UMass Amherst, Published in 2003, 246 pages
312. Combinatorial Group Theory
     Charles F. Miller III | University of Melbourne, Published in 2004, 99 pages
313. Differential Equations
     William Woolsey Johnson | J. Wiley, Published in 1906, 96 pages
314. Algebraic Topology
     Allen Hatcher | Cambridge University Press, Published in 2001, 559 pages
315. Existence, multiplicity, perturbation, and concentration results for a class of quasi-linear elliptic problems
     Marco Squassina | Electronic Journal of Differential Equations, Published in 2006, 213 pages
316. Sets, Groups and Knots
     Curtis T. McMullen | Harvard University, Published in 2008, 56 pages
317. The Geometry and Topology of Three-Manifolds
     William P Thurston | Mathematical Sciences Research Institute, Published in 2002, 502 pages
318. Introduction to Probability and Statistics Using R
     G. Jay Kerns | , Published in 2010, 412 pages
319. Elliptic Functions
     Arthur Latham Baker | John Wiley & Sons, Published in 1890, 147 pages
320. Shape Analysis, Lebesgue Integration and Absolute Continuity Connections
     Javier Bernal | arXiv.org, Published in 2019, 82 pages
321. Geometry, Topology and Physics
     Maximilian Kreuzer | Technische Universitat Wien, Published in 2010, 69 pages
322. Statistical Treatment of Experimental Data
     Hugh D. Young | McGraw Hill, Published in 1962
323. Ten Chapters of the Algebraical Art
     Peter J. Cameron | Queen Mary, University of London, Published in 2007, 108 pages
324. Lectures on Stratification of Complex Analytic Sets
     M.-H. Schwartz | Tata Institute of Fundamental Research, Published in 1966, 67 pages
325. Advances in Graph Algorithms
     Ton Kloks, Yue-Li Wang | viXra.org, Published in 2013, 178 pages
326. How To Write Proofs
     Larry W. Cusick | California State University, Fresno, Published in 2009
327. The Life of Pi: From Archimedes to Eniac and Beyond
     Jonathan M. Borwein | DocServer, Published in 2010, 30 pages
328. Complex Analytic and Differential Geometry
     Jean-Pierre Demailly | Universite de Grenoble, Published in 2007, 571 pages
329. Matrices
     Shmuel Friedland | University of Illinois at Chicago, Published in 2010, 437 pages
330. H2 Mathematics Textbook
     Yan Min Choo | , Published in 2016, 1384 pages
331. Thin Groups and Superstrong Approximation
     Emmanuel Breuillard, Hee Oh (eds.) | Cambridge University Press, Published in 2014, 362 pages
332. Lectures on the topological recursion for Higgs bundles and quantum curves
     Olivia Dumitrescu, Motohico Mulase | arXiv, Published in 2015, 69 pages
333. Notes on Differential Geometry
     Noel J. Hicks | Van Nostrand, Published in 1965, 183 pages
334. Special Course in Functional Analysis: (Non-)Commutative Topology
     Ville Turunen | Aalto TKK, Published in 2008, 83 pages
335. A Problem-Solving Approach to College Algebra
     Marcel B. Finan | Arkansas Tech University, Published in 2002, 92 pages
336. Commutative Algebra and Noncommutative Algebraic Geometry
     David Eisenbud, et al. | Cambridge University Press, Published in 2015, 775 pages
337. Introduction to Probability
     Leif Mejlbro | BookBoon, Published in 2009, 61 pages
338. Semi-classical analysis
     Victor Guillemin, Shlomo Sternberg | Harvard University, Published in 2012, 488 pages
339. Logic for Computer Science
     | Wikibooks, Published in 2010
340. Discrete Mathematics for Computer Science
     Jean Gallier | arXiv, Published in 2008, 255 pages
341. Analysis Tools with Applications
     Bruce K. Driver | Springer, Published in 2003, 790 pages
342. Lectures on Representations of Complex Semi-Simple Lie Groups
     Thomas J. Enright | Tata Institute of Fundamental Research, Published in 1981, 94 pages
343. Probability and Theory of Errors
     Robert Simpson Woodward | J. Wiley & Sons, Published in 1906, 64 pages
344. H Ring Spectra and Their Applications
     R. R. Bruner, J. P. May, J. E. McClure, M. Steinberger | Springer, Published in 1986, 400 pages
345. Model Categories and Simplicial Methods
     Paul Goerss, Kristen Schemmerhorn | Northwestern University, Published in 2004, 46 pages
346. Fundamentals of Practical Mathematics
     George Wentworth | Ginn and Co., Published in 1922, 220 pages
347. Elementary Number Theory
     William Edwin Clark | University of South Florida, Published in 2002, 129 pages
348. Endless Amusement
     | Lea and Blanchard, Published in 1847, 217 pages
349. Engineering Statistics Handbook
     | NIST/SEMATECH, Published in 2003
350. Elements of the Theory of Functions of a Complex Variable
     G.E. Fisher, I.J. Schwatt | Philadelphia G.E. Fisher, Published in 1896, 312 pages
351. Algorithms in Real Algebraic Geometry
     S. Basu, R. Pollack, M. Roy | Springer, Published in 2009, 672 pages
352. An introductory course in differential geometry and the Atiyah-Singer index theorem
     Paul Loya | Binghamton University, Published in 2005, 137 pages
353. Spherical Trigonometry
     I. Todhunter | Macmillan and co, Published in 1886, 189 pages
354. Quadratic Forms and Their Applications
     Andrew Ranicki, et al. | American Mathematical Society, Published in 2000, 314 pages
355. Rotations of Vectors Via Geometric Algebra
     James A. Smith | viXra, Published in 2016, 76 pages
356. Introduction to Vectors and Tensors Volume 2: Vector and Tensor Analysis
     Ray M. Bowen, C.-C. Wang | , Published in 2008, 246 pages
357. Handbook of Engineering Mathematics
     Walter E. Wynne, William Spraragen | Van Nostrand, Published in 1916, 246 pages
358. The Elements of Analytic Geometry
     Percey F. Smith, A. S. Gale | Ginn & company, Published in 1904, 450 pages
359. Determinantal Rings
     Winfried Bruns, Udo Vetter | Springer, Published in 1988, 244 pages
360. Temporal Networks
     Petter Holme, Jari Saramäki | arXiv, Published in 2011, 25 pages
361. Orders of Infinity
     G. H. Hardy | Cambridge University Press, Published in 1910, 101 pages
362. Galois Lectures
     J. Douglas, P. Franklin, C.J. Keyser, L. Infeld | Morrill Press, Published in 1941, 141 pages
363. Cribbage: A Strategy Guide for Beginners
     Jake Magnum | Smashwords, Published in 2016, 122 pages
364. Combinatorics and Algebra of Tensor Calculus
     Sen Hu, Xuexing Lu, Yu Ye | arXiv, Published in 2015, 88 pages
365. Mathematical Recreations and Essays
     W. W. Rouse Ball | Macmillan, Published in 1914, 506 pages
366. Lecture Notes on the Theory of Distributions
     Guenther Hoermann, Roland Steinbauer | Universitaet Wien, Published in 2009, 160 pages
367. Numerical Analysis I
     Mark Embree | Rice University, Published in 2012, 207 pages
368. Diophantine Analysis
     R. D. Carmichael | John Wiley & Sons, Published in 1915, 120 pages
369. Local Theory of Holomorphic Foliations and Vector Fields
     Julio C. Rebelo, Helena Reis | arXiv, Published in 2011, 115 pages
370. Short introduction to Nonstandard Analysis
     E. E. Rosinger | arXiv, Published in 2004, 197 pages
371. Functional Analysis Lecture Notes
     T.B. Ward | University of East Anglia, Published in 2001, 73 pages
372. Elementary Calculus
     Michael Corral | mecmath.net, Published in 2021, 348 pages
373. Advanced Topics in Probability
     S.R.S. Varadhan | New York University, Published in 2011, 203 pages
374. Group Characters, Symmetric Functions, and the Hecke Algebra
     David M. Goldschmidt | American Mathematical Society, Published in 1993, 69 pages
375. Encyclopedia of Dynamical Systems
     D. Anosov, at al. | Scholarpedia, Published in 2009
376. Topology
     Curtis T. McMullen | Harvard University, Published in 2013, 90 pages
377. Techniques of Applied Mathematics
     Andrew Fowler | University of Oxford, Published in 2005, 141 pages
378. Statistics Beyond the Absolute Basics
     Ivan Lowe | scientificlanguage.com, Published in 2018, 182 pages
379. Grassmann Algebra
     John Browne | , Published in 2001, 238 pages
380. Notes on Galois Theory
     Mark Reeder | Boston College, Published in 2012, 66 pages
381. Differential Geometry: A Geometric Introduction
     David W. Henderson | Project Euclid, Published in 2013, 250 pages
382. Discrete Structures
     Vladlen Koltun | Stanford University, Published in 2008, 89 pages
383. Introductory Map Theory
     Yanpei Liu | Kapa & Omega, Published in 2010, 503 pages
384. Rational Amusement for Winter Evenings
     John Jackson | Longman, Published in 1821, 138 pages
385. Exploring Discrete Mathematics Using Maple
     Kenneth H. Rosen | Mcgraw-Hill College, Published in 1996, 400 pages
386. Numerical Methods with Applications
     Autar K Kaw, Egwu Eric Kalu | Lulu.com, Published in 2008, 728 pages
387. An Architecture for Combinator Graph Reduction
     Philip J. Koopman, Jr. | Academic Press, Published in 1990, 176 pages
388. Axiomatic Set Theory I
     A. C. Walczak-Typke | , Published in 2009, 128 pages
389. Measure Theory in Non-Smooth Spaces
     Nicola Gigli | De Gruyter Open, Published in 2017, 346 pages
390. Ample Subvarieties of Algebraic Varieties
     Robin Hartshorne | Springer, Published in 1970, 273 pages
391. Foundations of Infinitesimal Calculus
     H. Jerome Keisler | University of Wisconsin, Published in 2011, 213 pages
392. Algebraic Tools for Modal Logic
     Mai Gehrke, Yde Venema | ESSLLI, Published in 2001, 109 pages
393. Introduction to Statistical Thinking
     Benjamin Yakir | The Hebrew University of Jerusalem, Published in 2011, 324 pages
394. Category Theory for Scientists
     David I. Spivak | arXiv, Published in 2013, 261 pages
395. Introduction to Topological Groups
     Dikran Dikranjan | UCM, Published in 2007, 69 pages
396. High School Algebra
     J.T. Crawford | The Macmillan Company, Published in 1916, 428 pages
397. Essential Mathematics
     Franco Vivaldi | , Published in 2006, 74 pages
398. Infinite-dimensional Lie Algebras
     Iain Gordon | University of Edinburgh, Published in 2009, 55 pages
399. Categories and Modules
     Takahiro Kato | viXra.org, Published in 2015, 323 pages
400. CDBooK: Introduction to Vassiliev Knot invariants
     S.Chmutov, S.Duzhin, J.Mostovoy | Ohio State Universit, Published in 2009, 460 pages
401. Introductory Statistics Notes
     Jamie DeCoster | University of Alabama, Published in 1998, 48 pages
402. Mathematics and Group Theory in Music
     Athanase Papadopoulos | arXiv, Published in 2014, 33 pages
403. Geometry and Group Theory
     Christopher Pope | Texas A&M University, Published in 2008, 181 pages
404. Distribution Theory (Generalized Functions)
     Ivan F Wilde | , Published in 2005, 66 pages
405. A Mathematics Primer for Physics Graduate Students
     Andrew E. Blechman | , Published in 2007, 78 pages
406. Bayesian Networks: Advances and Novel Applications
     Douglas McNair (ed.) | IntechOpen, Published in 2019, 256 pages
407. Differential Equations
     H. B. Phillips | John Wiley & Sons, Published in 1922, 84 pages
408. Foundations of Constructive Probability Theory
     Yuen-Kwok Chan | arXiv.org, Published in 2019, 517 pages
409. Contributions to Fourier Analysis
     A. Zygmund, et al. | Princeton University Press, Published in 1950, 207 pages
410. How We Got From There to Here: A Story of Real Analysis
     Robert Rogers, Eugene Boman | Open SUNY Textbooks, Published in 2013, 210 pages
411. A First Course in Elementary Differential Equations
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 213 pages
412. An Introduction to Group Theory: Applications to Mathematical Music Theory
     Flor Aceff-Sanchez, et al. | BookBoon, Published in 2013, 165 pages
413. Fields and Galois Theory
     J. S. Milne | , Published in 2008, 111 pages
414. Smarandache Near-rings
     W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 201 pages
415. Introduction to Probability Theory and Statistics for Linguistics
     Marcus Kracht | UCLA, Published in 2005, 137 pages
416. Solid Geometry, with Problems and Applications
     H. E. Slaught, N. J. Lennes | Allyn and Bacon, Published in 1919, 242 pages
417. Category Theory and Functional Programming
     Mikael Vejdemo-Johansson | University of St. Andrews, Published in 2012, 99 pages
418. Engineering Mathematics: YouTube Workbook
     Christopher C. Tisdell | BookBoon, Published in 2012, 114 pages
419. Complex Analysis
     C. McMullen | Harvard University, Published in 2010, 106 pages
420. Notes on the course Algebraic Topology
     Boris Botvinnik | University of Oregon, Published in 2010, 181 pages
421. General Topology
     Jesper M. Moller | , Published in 2010, 75 pages
422. Elementary Geometry: Practical and Theoretical
     C. Godfrey, A. W. Siddons | Cambridge University Press, Published in 1919, 438 pages
423. Introduction to Projective Varieties
     Enrique Arrondo | Universidad Complutense de Madrid, Published in 2007, 140 pages
424. Introduction to Infinitesimal Analysis: Functions of One Real Variable
     N. J. Lennes | John Wiley & Sons, Published in 1907, 225 pages
425. Coalgebras and Modal Logic
     Alexander Kurz | ESSLLI, Published in 2002, 100 pages
426. Fractional Graph Theory: A Rational Approach to the Theory of Graphs
     Daniel Ullman, Edward Scheinerman | Wiley, Published in 2008, 167 pages
427. Introductory Statistics: Concepts, Models, and Applications
     David W. Stockburger | Missouri State University, Published in 1996
428. Lectures on the Mean-Value and Omega Theorems for the Riemann Zeta-Function
     K. Ramachandra | Tata Institute of Fundamental Research, Published in 1995, 190 pages
429. Notes on Differential Equations
     Bob Terrell | , Published in 2005, 99 pages
430. Numbers and Symbols: From Counting to Abstract Algebras
     Roy McWeeny | Learning Development Institute, Published in 2007, 53 pages
431. Hyperbolic Manifolds, Discrete Groups and Ergodic Theory
     Curtis T. McMullen | Harvard University, Published in 2011, 118 pages
432. A Reform Approach to Business Calculus
     Marcel B. Finan | Arkansas Tech University, Published in 2003, 150 pages
433. Fundamental Numerical Methods and Data Analysis
     George W. Collins, II | NASA ADS, Published in 2003, 254 pages
434. Mathematical Illustrations: A Manual of Geometry and PostScript
     Bill Casselman | Cambridge University Press, Published in 2005, 336 pages
435. Mathematical Tools for Physics
     James Nearing | Dover Publications, Published in 2010, 569 pages
436. Fundamentals of Linear Algebra
     Marcel B. Finan | Arkansas Tech University, Published in 2001, 196 pages
437. Statistics Review: Including a probability theory background
     | Wikipedia, Published in 2014
438. Algebraic Geometry
     J.S. Milne | , Published in 2008, 241 pages
439. Advances in Discrete Differential Geometry
     Alexander I. Bobenko (ed.) | Springer, Published in 2016, 439 pages
440. Lectures on Symplectic Geometry
     Ana Cannas da Silva | Springer, Published in 2006, 225 pages
441. The Radon Transform
     Sigurdur Helgason | Birkhauser Boston, Published in 1999, 196 pages
442. The Essence of Mathematics Through Elementary Problems
     Alexandre Borovik, Tony Gardiner | Open Book Publishers, Published in 2019, 400 pages
443. Lectures on Numerical Methods in Bifurcation Problems
     H.B. Keller | Tata Institute Of Fundamental Research, Published in 1986, 140 pages
444. Algebraic and Geometric Methods in Enumerative Combinatorics
     Federico Ardila | arXiv, Published in 2014, 143 pages
445. A Course in Mathematical Analysis
     E. Goursat, O. Dunkel, E.R. Hedrick | Ginn & company, Published in 1904, 1890 pages
446. Lectures on Topics in Stochastic Differential Equations
     Daniel W. Stroock | Tata Institute of Fundamental Research, Published in 1982, 93 pages
447. Vector Analysis Notes
     Matthew Hutton | matthewhutton.com, Published in 2006, 63 pages
448. A Modern Course on Curves and Surfaces
     Richard S. Palais | virtualmathmuseum.org, Published in 2003, 163 pages
449. Complex Manifolds and Hermitian Differential Geometry
     Andrew D. Hwang | University of Toronto, Published in 1997, 113 pages
450. Tight and Taut Submanifolds
     Thomas E. Cecil, Shiing-shen Chern | Cambridge University Press, Published in 1997, 349 pages
451. Noncommutative Localization in Algebra and Topology
     Andrew Ranicki | Cambridge University Press, Published in 2002, 323 pages
452. The Convenient Setting of Global Analysis
     Andreas Kriegl, Peter W. Michor | American Mathematical Society, Published in 1997, 624 pages
453. Sequences and Power Series: Guidelines for Solutions of Problems
     Leif Mejlbro | BookBoon, Published in 2007, 104 pages
454. A First Course in Complex Analysis
     M. Beck, G. Marchesi, D. Pixton | San Francisco State University, Published in 2012, 215 pages
455. Basic Arithmetic Student Workbook
     Donna Gaudet, Amy Volpe, Jenifer Bohart | Scottsdale Community College, Published in 2013, 244 pages
456. Symplectic Geometry of Quantum Noise
     Leonid Polterovich | arXiv, Published in 2012, 57 pages
457. The Axioms Of Descriptive Geometry
     Alfred North Whitehead | Cambridge University Press, Published in 1914, 96 pages
458. Linear Algebra
     Jim Hefferon | Saint Michael's College, Published in 2017, 507 pages
459. Statistics 1
     Keijo Ruohonen | Tampere University of Technology, Published in 2011, 97 pages
460. Spectral Theory of Partial Differential Equations
     Richard S. Laugesen | arXiv, Published in 2012, 120 pages
461. Fundamentals of Mathematics
     Denny Burzynski, Wade Ellis | Saunders College Publishing, Published in 1989, 600 pages
462. Integral Calculus
     Leah Edelstein-Keshet | University of British Columbia, Published in 2010, 267 pages
463. Periodic Solutions for Evolution Equations
     Mihai Bostan | American Mathematical Society, Published in 2002, 41 pages
464. Lectures on Geodesics in Riemannian Geometry
     M. Berger | Tata Institute of Fundamental Research, Published in 1965, 317 pages
465. Lectures on The Finite Element Method
     Ph. Ciarlet | Tata Institute of Fundamental Research, Published in 1975, 145 pages
466. APEX Calculus
     Gregory Hartman, et al. | APEXcalculus.com, Published in 2015, 874 pages
467. Interactive Real Analysis
     Bert G. Wachsmuth | Seton Hall University, Published in 2007
468. Topology
     David Wilkins | Trinity College, Dublin, Published in 2001
469. Lectures on Noise Sensitivity and Percolation
     Christophe Garban, Jeffrey E. Steif | arXiv, Published in 2011, 150 pages
470. Everything Maths: Grade 12 Mathematics
     Neels van der Westhuizen, et al. | Siyavula, Published in 2012, 199 pages
471. Pseudodifferential Operators and Nonlinear PDE
     Michael E. Taylor | Birkhäuser Boston, Published in 1991, 202 pages
472. Linear algebra via exterior products
     Sergei Winitzki | Ludwig-Maximilians University, Published in 2009, 82 pages
473. Algorithmic Number Theory
     J.P. Buhler, P. Stevenhagen | Cambridge University Press, Published in 2008, 662 pages
474. Introduction to Commutative Algebra
     Thomas J. Haines | University of Maryland, Published in 2005, 87 pages
475. Projective and Polar Spaces
     Peter J. Cameron | Queen Mary College, Published in 1991, 147 pages
476. Graph Theory
     Reinhard Diestel | Springer, Published in 2005, 422 pages
477. Multivector Differential Calculus
     Eckhard Hitzer | arXiv, Published in 2013, 43 pages
478. An Introductory Course Of Mathematical Analysis
     Charles Walmsley | Cambridge University Press, Published in 1920, 268 pages
479. Traveling Wave Solutions of Parabolic Systems
     A. Volpert, V. Volpert, V. Volpert | American Mathematical Society, Published in 2000, 448 pages
480. Lectures on Partial Differential Equations
     G.B. Folland | Tata Institute of Fundamental Research, Published in 1983, 145 pages
481. Lower K- and L-theory
     Andrew Ranicki | Cambridge University Press, Published in 2001, 177 pages
482. Nonstandard Analysis
     J. Ponstein | , Published in 2002, 147 pages
483. Notes on Discrete Mathematics
     Miguel A. Lerma | , Published in 2005, 154 pages
484. Real Analysis
     Martin Smith-Martinez, et al. | Wikibooks, Published in 2013
485. Curves and Surfaces in Geometric Modeling: Theory and Algorithms
     Jean Gallier | Morgan Kaufmann, Published in 1999, 502 pages
486. The CRing Project: a collaborative open source textbook on commutative algebra
     Shishir Agrawal, et al. | CRing Project, Published in 2011, 493 pages
487. Set Theory and Topology: An Introduction to the Foundations of Analysis
     Felix Nagel | arXiv, Published in 2013, 160 pages
488. Hack, Hack, Who's There? A Gentle Introduction to Model Theory
     David Reid | Smashwords, Published in 2016, 273 pages
489. Optimization Algorithms on Matrix Manifolds
     P.-A. Absil, R. Mahony, R. Sepulchre | Princeton University Press, Published in 2007, 240 pages
490. Dynamical Systems
     Jose A. Tenreiro Machado (ed.) | MDPI AG, Published in 2014, 553 pages
491. Introductory Statistics
     T. H. Wonnacott, R. J. Wonnacott | Wiley, Published in 1969, 416 pages
492. Elementary Functions and Applications
     Arthur Sullivan Gale, Charles William Watkeys | H. Holt & Co., Published in 1920, 459 pages
493. The Continuum and Other Types of Serial Order
     Edward V. Huntington | Dover Publications, Published in 1917, 90 pages
494. From D-modules to Deformation Quantization Modules
     Pierre Schapira | UPMC, Published in 2012, 89 pages
495. Multivariable and Vector Analysis
     W W L Chen | Macquarie University, Published in 2008, 203 pages
496. A History of the Progress of the Calculus of Variations during the Nineteenth Century
     Isaac Todhunter | Adamant Media Corporation, Published in 2005, 549 pages
497. Encyclopedia of Mathematics
     | Kluwer Academic Publishers, Published in 2002, 1202 pages
498. Manifolds of Differentiable Mappings
     Peter W. Michor | Birkhauser, Published in 1980, 165 pages
499. The Theory of Numbers
     R. D. Carmichael | John Wiley & Sons, Published in 1914, 85 pages
500. Dr. Vogel's Gallery of Calculus Pathologies
     Thomas I. Vogel | , Published in 1997