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. Lectures on Cyclic Homology
   D. Husemoller | Tata Institute of Fundamental Research, Published in 1991, 114 pages
2. Techniques of Applied Mathematics
   Andrew Fowler | University of Oxford, Published in 2005, 141 pages
3. Basic Category Theory
   Tom Leinster | arXiv, Published in 2016, 191 pages
4. Harmonic Analysis, the Trace Formula, and Shimura Varieties
   J. Arthur, D. Ellwood, R. Kottwitz | American Mathematical Society, Published in 2005, 706 pages
5. Lectures on The Finite Element Method
   Ph. Ciarlet | Tata Institute of Fundamental Research, Published in 1975, 145 pages
6. Discrete Distributions
   Leif Mejlbro | BookBoon, Published in 2009, 72 pages
7. Lecture Notes on Embedded Contact Homology
   Michael Hutchings | arXiv, Published in 2013, 88 pages
8. The Mathematics of Investment
   William L.Hart | D.C Heath and Company, Published in 1924, 321 pages
9. Introduction to Probability Theory and Statistics for Linguistics
   Marcus Kracht | UCLA, Published in 2005, 137 pages
10. Functions Of A Complex Variable with Applications
    E. G. Phillips | Oliver And Boyd, Published in 1961, 160 pages
11. Fractional Dynamics
    Carlo Cattani, et al. | De Gruyter Open Ltd, Published in 2016, 408 pages
12. Introduction to Vectors and Tensors Volume 1: Linear and Multilinear Algebra
    Ray M. Bowen, C.-C.Wang | Springer, Published in 2008, 314 pages
13. Chaos: Classical and Quantum
    Predrag Cvitanovic | ChaosBook.org, Published in 2008, 813 pages
14. Linear Algebra with Applications
    W. Keith Nicholson | Lyryx, Published in 2018, 698 pages
15. Elementary Differential Equations
    William F. Trench | Brooks Cole, Published in 2001, 663 pages
16. Some Fundamental Theorems in Mathematics
    Oliver Knill | arXiv.org, Published in 2018, 133 pages
17. A Concise Geometry
    Clement V. Durell | G. Bell And Sons Limited., Published in 1921, 333 pages
18. Non-Euclidean Geometry
    Henry Manning | Ginn and Company, Published in 1901, 93 pages
19. Linear Algebra
    Jim Hefferon | Saint Michael's College, Published in 2017, 507 pages
20. Dynamical Systems: Analytical and Computational Techniques
    Mahmut Reyhanoglu | InTech, Published in 2017, 272 pages
21. Mathematical Reasoning: Writing and Proof
    Ted Sundstrom | Pearson Education, Inc., Published in 2013, 591 pages
22. Lectures on Lie Groups and Representations of Locally Compact Groups
    F. Bruhat | Tata Institute of Fundamental Research, Published in 1958, 140 pages
23. Higher Operads, Higher Categories
    Tom Leinster | arXiv, Published in 2003, 410 pages
24. Linear Partial Differential Equations and Fourier Theory
    Marcus Pivato | Cambridge University Press, Published in 2005, 619 pages
25. Basic Analysis: Introduction to Real Analysis
    Jiri Lebl | Lulu.com, Published in 2009, 161 pages
26. Stochastic Calculus
    Alan Bain | , Published in 2008, 99 pages
27. Geometric Transformation of Finite Element Methods: Theory and Applications
    M. Holst, M. Licht | arXiv.org, Published in 2018, 21 pages
28. A Concise Introduction to Mathematical Logic
    Wolfgang Rautenberg | Springer, Published in 2009, 131 pages
29. Honors Calculus
    Frank Jones | Rice University, Published in 2004
30. Geometric Theorems and Arithmetic Functions
    Jozsef Sandor | American Research Press, Published in 2002, 55 pages
31. Engineering Mathematics
    Charles Proteus Steinmetz | McGraw-Hill, Published in 1911, 326 pages
32. Euclidean Plane and Its Relatives
    Anton Petrunin | , Published in 2017, 201 pages
33. Popular Mathematics
    Robert Mudie | Orr and Smith, Published in 1836, 523 pages
34. Galois Theory
    Miles Reid | University of Warwick, Published in 2004, 89 pages
35. Practical Mathematics for Home Study
    Claude Irwin Palmer | McGraw-Hill, Published in 1919, 528 pages
36. Introduction Probaility and Statistics
    Muhammad El-Taha | University of Southern Maine, Published in 2003, 147 pages
37. Global Theory Of Minimal Surfaces
    David Hoffman | American Mathematical Society, Published in 2005, 808 pages
38. Statistical Tools for Economists
    Daniel McFadden | University of California, Berkeley, Published in 2001
39. Introduction to Homological Geometry
    Martin A. Guest | arXiv, Published in 2001
40. Elementary Number Theory: Primes, Congruences, and Secrets
    William Stein | Springer, Published in 2004, 166 pages
41. Applied Stochastic Processes in Science and Engineering
    Matt Scott | University of Waterloo, Published in 2013, 316 pages
42. Galois Groups and Fundamental Groups
    Leila Schneps | Cambridge University Press, Published in 2003, 467 pages
43. Differential Calculus
    Pierre Schapira | Université Paris VI, Published in 2011, 60 pages
44. Applied Linear Algebra in Action
    Vasilios N. Katsikis | InTech, Published in 2016, 172 pages
45. Course of Analytical Geometry
    Ruslan Sharipov | UFA, Published in 2011, 226 pages
46. Statistics, Probability, and Game Theory: papers in honor of David Blackwell
    David Blackwell, at al. | IMS, Published in 1996, 407 pages
47. Category Theory for Programmers
    Bartosz Milewski | unglue.it, Published in 2017, 510 pages
48. Advances in Discrete Differential Geometry
    Alexander I. Bobenko (ed.) | Springer, Published in 2016, 439 pages
49. Hyperbolic Functions
    James McMahon | John Wiley & Sons, Published in 1906, 106 pages
50. The Algebra of Invariants
    J.H. Grace, A. Young | Cambridge, University Press, Published in 1903, 404 pages
51. First Course in the Theory of Equations
    Leonard E. Dickson | John Wiley & Sons, Published in 1922, 207 pages
52. Fundamentals of Practical Mathematics
    George Wentworth | Ginn and Co., Published in 1922, 220 pages
53. Non-Uniform Random Variate Generation
    Luc Devroye | Springer, Published in 1986, 843 pages
54. Noncommutative Localization in Algebra and Topology
    Andrew Ranicki | Cambridge University Press, Published in 2002, 323 pages
55. Applied Statistics
    Mohammed A. Shayib | Bookboon, Published in 2013, 300 pages
56. Differential Geometrical Theory of Statistics
    Frederic Barbaresco, Frank Nielsen (eds) | MDPI AG, Published in 2017, 474 pages
57. Grassmann Algebra
    John Browne | , Published in 2001, 238 pages
58. Deformations of Algebras in Noncommutative Geometry
    Travis Schedler | arXiv, Published in 2015, 120 pages
59. Real Functions in One Variable: Examples of Integrals
    Leif Mejlbro | BookBoon, Published in 2007, 154 pages
60. An Introduction to Geometry
    Wong Yan Loi | National University of Singapore, Published in 2009, 136 pages
61. Parallel Spectral Numerical Methods
    Gong Chen, et al. | Wikibooks, Published in 2013
62. Lectures on Meromorphic Functions
    W.K. Hayman | Tata Institue of Fundamental Research, Published in 1959, 119 pages
63. A Primer of Real Analysis
    Dan Sloughter | Synechism.org, Published in 2009, 152 pages
64. Algebra: A Computational Introduction
    John Scherk | Chapman & Hall, Published in 2000, 419 pages
65. Mathematics and Physical Science in Classical Antiquity
    J. L. Heiberg | Oxford University Press, Published in 1922, 115 pages
66. Introduction to Real Analysis
    William F. Trench | Prentice Hall, Published in 2003, 583 pages
67. Uncertainty Theory
    Baoding Liu | Tsinghua University, Published in 2018, 501 pages
68. A Short History of Greek Mathematics
    James Gow | Cambridge University Press, Published in 1884, 351 pages
69. Functional and Structured Tensor Analysis for Engineers
    R. M. Brannon | The University of Utah, Published in 2003, 323 pages
70. Intuitive Infinitesimal Calculus
    Viktor Blasjo | Intellectual Mathematics, Published in 2015, 98 pages
71. The Air Force Brain Booster Book
    John C. Sparks | Air Force Publication, Published in 2006, 58 pages
72. Mathematical Measures, Mathematical Pleasures, Mathematical Treasures
    Stephen Clark | Lulu.com, Published in 2008, 48 pages
73. Introduction to Evolution Equations in Geometry
    Bianca Santoro | arXiv, Published in 2012, 91 pages
74. New Perspectives in Algebraic Combinatorics
    Louis J. Billera, at al. | Cambridge University Press, Published in 1999, 345 pages
75. The Geometry and Topology of Three-Manifolds
    William P Thurston | Mathematical Sciences Research Institute, Published in 2002, 502 pages
76. Algebraic L-theory and Topological Manifolds
    A. A. Ranicki | Cambridge University Press, Published in 2011, 365 pages
77. Principles of Uncertainty
    Joseph B. Kadane | Chapman and Hall/CRC, Published in 2011, 499 pages
78. Tensor Analysis
    Edward Nelson | Princeton Univ Pr, Published in 1974, 138 pages
79. Elementary Fuzzy Matrix Theory and Fuzzy Models for Social Scientists
    W. B. Vasantha Kandasamy, at al. | arXiv, Published in 2007, 352 pages
80. Categories and Homological Algebra
    Pierre Schapira | UPMC, Published in 2011, 125 pages
81. Introduction to the Theory of Fourier's Series and Integrals
    H. S. Carslaw | Macmillan and co., Published in 1921, 346 pages
82. Vector Analysis and Quaternions
    Alexander Macfarlane | John Wiley & Sons, Published in 1906, 65 pages
83. Trigonometry
    Michael Corral | mecmath.net, Published in 2009, 174 pages
84. C*-algebraic Methods in Spectral Theory
    Serge Richard | Nagoya University, Published in 2014, 103 pages
85. Amusements in Mathematics
    Henry Ernest Dudeney | Nelson, Published in 1917, 280 pages
86. Introduction to Vectors and Tensors Volume 2: Vector and Tensor Analysis
    Ray M. Bowen, C.-C. Wang | , Published in 2008, 246 pages
87. Lectures on Topics in Mean Periodic Functions and the Two-Radius Theorem
    J. Delsarte | Tata Institute of Fundamental Research, Published in 1961, 151 pages
88. Collaborative Statistics
    Barbara Illowsky, Susan Dean | Illowsky Publising, Published in 2012, 728 pages
89. A Scrap-Book of Elementary Mathematics
    William F. White | The Open Court Publishing Company, Published in 1908, 234 pages
90. A Summary of Calculus
    Karl Heinz Dovermann | University of Hawaii, Published in 2003, 164 pages
91. Practical Foundations of Mathematics
    Paul Taylor | Cambridge University Press, Published in 1999, 588 pages
92. Abelian Categories: an Introduction to the Theory of Functors
    Peter Freyd | Harper and Row, Published in 1964, 192 pages
93. Workbook in Higher Algebra
    David Surowski | , Published in 1992, 194 pages
94. Elementary Real Analysis
    B. S. Thomson, J. B. Bruckner, A. M. Bruckner | Prentice Hall, Published in 2001, 735 pages
95. Geometry, Topology and Physics
    Maximilian Kreuzer | Technische Universitat Wien, Published in 2010, 69 pages
96. H2 Mathematics Textbook
    Yan Min Choo | , Published in 2016, 1384 pages
97. Applied Analysis
    J. Hunter, B. Nachtergaele | World Scientific Publishing Company, Published in 2005, 439 pages
98. A Course In Commutative Algebra
    Robert B. Ash | University of Illinois, Published in 2006
99. Current Topics in Complex Algebraic Geometry
    Herbert Clemens, János Kollár | Cambridge University Press, Published in 1996, 172 pages
100. Linear Algebra Examples C-1: Linear equations, matrices and determinants
     Leif Mejlbro | BookBoon, Published in 2009, 113 pages
101. Book of Proof
     Richard Hammack | Virginia Commonwealth University, Published in 2009, 270 pages
102. A Primer on Homotopy Colimits
     Daniel Dugger | University of Oregon, Published in 2008, 72 pages
103. The Geometry and Topology of Braid Groups
     Jenny Wilson | University of Michigan, Published in 2018, 30 pages
104. Mathematical Foundations of Probability Theory
     Gane Samb Lo | arXiv.org, Published in 2018, 378 pages
105. Advanced Algebra
     John Redden | lardbucket.org, Published in 2014, 2094 pages
106. A Short Account of the History of Mathematics
     W. W. Rouse Ball | Dover Publications, Published in 1960, 466 pages
107. A set of new Smarandache functions, sequences and conjectures in number theory
     Felice Russo | American Research Press, Published in 2000, 114 pages
108. Introduction to Partial Differential Equations
     John Douglas Moore | UCSB, Published in 2003, 169 pages
109. Mathematics and Biology: The Interface, Challenges, and Opportunities
     Simon A. Levin | , Published in 2008
110. Introduction to Categories and Categorical Logic
     Samson Abramsky, Nikos Tzevelekos | arXiv, Published in 2011, 101 pages
111. Lectures on Calabi-Yau and Special Lagrangian Geometry
     Dominic Joyce | arXiv, Published in 2002, 58 pages
112. Basic Concepts of Mathematics
     Elias Zakon | The Trillia Group, Published in 2007, 208 pages
113. Metric and Topological Spaces
     T. W. Körner | University of Cambridge, Published in 2014, 109 pages
114. Smarandache Rings
     W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 222 pages
115. Dynamical Systems and Chaos
     Evans M. Harrell II | , Published in 2000
116. Algorithms for Modular Elliptic Curves
     J. E. Cremona | Cambridge University Press, Published in 1992, 351 pages
117. Integral Calculus
     Leah Edelstein-Keshet | University of British Columbia, Published in 2010, 267 pages
118. Calculus Concentrate
     Russell A. Gordon | Whitman College, Published in 2006, 182 pages
119. Mathematics in the Age of the Turing Machine
     Thomas Hales | arXiv, Published in 2013, 45 pages
120. On Lie Algebras Of Prime Characteristic
     George B. Seligman | American Mathematical Society, Published in 1956, 93 pages
121. Computational Mathematics for Differential Equations
     N. V. Kopchenova, I. A. Maron | , Published in 1975
122. Introduction to Statistical Thought
     Michael Lavine | , Published in 2008, 434 pages
123. An Introduction to Microlocal Analysis
     Richard B. Melrose, Gunther Uhlmann | MIT, Published in 2008, 182 pages
124. Congruence Lattices of Finite Algebras
     William DeMeo | arXiv, Published in 2012, 130 pages
125. Lectures on Differential Geometry
     Wulf Rossmann | University of Ottawa, Published in 2003, 221 pages
126. Introduction to Algebraic Topology and Algebraic Geometry
     U. Bruzzo | , Published in 2008, 138 pages
127. Introductory Maths for Chemists
     J. E. Parker | Bookboon, Published in 2013, 136 pages
128. Probability
     Douglas Kennedy | Trinity College, Published in 2010, 78 pages
129. Functional Analysis
     Gerald Teschl | University of Vienna, Published in 2009, 142 pages
130. Convergence of Stochastic Processes
     D. Pollard | Springer, Published in 1984, 223 pages
131. Quadratic Forms and Their Applications
     Andrew Ranicki, et al. | American Mathematical Society, Published in 2000, 314 pages
132. Geometric Exercises in Paper Folding
     T. Sundara Row | The Open Court pub. co, Published in 1917, 176 pages
133. Lectures on Potential Theory
     M. Brelot | Tata Institute of Fundamental Research, Published in 1967, 158 pages
134. Commutator Theory for Congruence Modular Varieties
     Ralph Freese, Ralph McKenzie | Cambridge University Press, Published in 1987, 174 pages
135. Lower K- and L-theory
     Andrew Ranicki | Cambridge University Press, Published in 2001, 177 pages
136. Introduction to Modal Logic
     Gary Hardegree | UMass Amherst, Published in 2009, 275 pages
137. Applied Analysis
     I.M. Sigal, M. Merkli | University of Toronto, Published in 2001, 176 pages
138. Mathematics for the Physical Sciences
     Leslie Copley | De Gruyter Open, Published in 2014, 446 pages
139. Numerical Methods For Time Dependent Equations
     P. Lascaux | Tata Institute of Fundamental Research, Published in 1976, 162 pages
140. Notes on Fermionic Fock Space for Number Theorists
     Greg W. Anderson | The University of Arizona, Published in 2000, 99 pages
141. Differential Topology and Morse Theory
     Dirk Schuetz | University of Sheffield, Published in 2009, 96 pages
142. Optimization Models For Decision Making
     Katta G. Murty | Springer, Published in 2010, 482 pages
143. Problems in Mathematical Analysis
     B. P. Demidovich | MIR Publishers, , 511 pages
144. An Introduction to Semialgebraic Geometry
     Michel Coste | Universite de Rennes, Published in 2002, 78 pages
145. Essays on the Theory of Numbers
     Richard Dedekind | The Open Court Publishing, Published in 1901, 78 pages
146. The Hermitian Two Matrix Model with an Even Quartic Potential
     M. Duits,‎ A.B.J. Kuijlaars,‎ M. Yue Mo | American Mathematical Society, Published in 2012, 118 pages
147. College Algebra
     Paul Dawkins | Lamar University, Published in 2011, 352 pages
148. Mirror Symmetry
     Cumrun Vafa, Eric Zaslow | American Mathematical Society, Published in 2003, 950 pages
149. The Matrix Cookbook
     Kaare Brandt Petersen, Michael Syskind Pedersen | , Published in 2008, 67 pages
150. Vector Calculus
     Michael Corral | Schoolcraft College, Published in 2008, 222 pages
151. Introduction to Lie Groups, Adjoint Action and Some Generalizations
     Marcos M. Alexandrino, Renato G. Bettiol | arXiv, Published in 2010, 129 pages
152. Mathematics for the Physical Sciences
     Herbert S Wilf | Dover Publications, Published in 1962, 298 pages
153. A First Book in Algebra
     Wallace C. Boyden | Project Gutenberg, Published in 2004, 189 pages
154. The Homology of Iterated Loop Spaces
     F. R. Cohen, T. J. Lada, P. J. May | Springer, Published in 2009, 490 pages
155. An Introduction to the Smarandache Function
     Charles Ashbacher | Erhus Univ Pr, Published in 1995, 62 pages
156. Endless Amusement
     | Lea and Blanchard, Published in 1847, 217 pages
157. The Elements of the Theory of Algebraic Numbers
     Legh Wilber Reid | The Macmillan company, Published in 1910, 488 pages
158. Interacting Particle Systems
     Stefan Grosskinsky | University of Warwick, Published in 2009, 56 pages
159. Orbital Integrals on Reductive Lie Groups and Their Algebras
     Francisco Bulnes | InTech, Published in 2013, 181 pages
160. Operator Algebras and Quantum Statistical Mechanics
     Ola Bratteli, Derek W. Robinson | Springer, Published in 2003, 505 pages
161. Optimal Stopping and Applications
     Thomas S. Ferguson | UCLA, Published in 2008
162. The Life of Pi: From Archimedes to Eniac and Beyond
     Jonathan M. Borwein | DocServer, Published in 2010, 29 pages
163. Circulants
     Alun Wyn-jones | , Published in 2008, 149 pages
164. Lectures on Complex Analytic Manifolds
     L. Schwartz | Tata Institute of Fundamental Research, Published in 1955, 163 pages
165. 18 Lectures on K-Theory
     Ioannis P. Zois | arXiv, Published in 2010, 137 pages
166. A Friendly Introduction to Number Theory
     Joseph H. Silverman | Pearson Education, Inc., Published in 2012, 56 pages
167. Differential Equations
     William Woolsey Johnson | J. Wiley, Published in 1906, 96 pages
168. Integrate Your Brain: How To Do Calculus In Your Head
     Aaron Maxwell | Lulu.com, Published in 2006, 51 pages
169. Elementary Mathematical Analysis
     J.W. Young, F.M. Morgan | The Macmillan Company, Published in 1917, 586 pages
170. Euclid's Elements of Geometry
     J.L. Heiberg, R. Fitzpatrick | , Published in 2008, 545 pages
171. Projective Geometry
     Nigel Hitchin | , Published in 2003
172. Statistical Inference for Everyone
     Brian S Blais | Save The Broccoli Publishing, Published in 2014, 200 pages
173. Introduction To Algebraical Geometry
     A. Clement Jones | Oxford University Press, Published in 1912, 558 pages
174. Advanced High School Statistics
     David M Diez, et al. | OpenIntro, Published in 2017, 458 pages
175. Linear Algebra C-4: Quadratic equations in two or three variables
     Leif Mejlbro | BookBoon, Published in 2009, 74 pages
176. Lectures on Introduction to Algebraic Topology
     G. de Rham | Tata Institute of Fundamental Research, Published in 1969, 71 pages
177. The Game of Logic
     Lewis Carroll | MacMillan, Published in 1887, 128 pages
178. An introductory course in differential geometry and the Atiyah-Singer index theorem
     Paul Loya | Binghamton University, Published in 2005, 137 pages
179. Introduction to Numerical Methods and Matlab Programming for Engineers
     Todd Young, Martin J. Mohlenkamp | Ohio University, Published in 2017, 182 pages
180. The Haskell Road to Logic, Maths and Programming
     Kees Doets, Jan van Eijck | College Publications, Published in 2004, 449 pages
181. Elementary Practical Mathematics
     John Perry | The Macmillan Company, Published in 1913, 364 pages
182. Geometric Wave Equations
     Stefan Waldmann | arXiv, Published in 2012, 279 pages
183. Notes on Measure and Integration
     John Franks | arXiv, Published in 2009, 118 pages
184. Elementary Calculus
     Frederick S Woods, Frederick H Bailey | Ginn and Company, Published in 1922, 323 pages
185. Practical Trigonometry
     H. C. Playne | E. Arnold, Published in 1906, 188 pages
186. Graph Theory Lessons
     Christopher P. Mawata | Math Cove, Published in 2018, 384 pages
187. Notes on Discrete Mathematics
     Miguel A. Lerma | , Published in 2005, 154 pages
188. Complex Analysis on Riemann Surfaces
     Curtis McMullen | Harvard University, Published in 2005, 89 pages
189. Easy Mathematics: Arithmetic and Algebra for General Readers
     Oliver Lodge | The Macmillan Company, Published in 1910, 466 pages
190. Lectures on Logarithmic Algebraic Geometry
     Arthur Ogus | University of California, Berkeley, Published in 2006, 255 pages
191. Lectures On The General Theory Of Integral Functions
     Georges Valiron | Chelsea Pub. Co., Published in 1949, 234 pages
192. Sequences and Power Series: Guidelines for Solutions of Problems
     Leif Mejlbro | BookBoon, Published in 2007, 104 pages
193. Iterative Methods for Linear and Nonlinear Equations
     C.T. Kelley | SIAM, Published in 1995, 172 pages
194. Introduction to Probability
     C. M. Grinstead, J. L. Snell | American Mathematical Society, Published in 1997, 520 pages
195. Digraphs: Theory, Algorithms and Applications
     Jorgen Bang-Jensen, Gregory Gutin | Springer, Published in 2002, 772 pages
196. Introduction to Differential Topology, de Rham Theory and Morse Theory
     Michael Muger | Radboud University, Published in 2005, 80 pages
197. Introduction to the Elementary Functions
     Raymond Benedict McClenon | Ginn and company, Published in 1918, 244 pages
198. Clifford Algebra, Geometric Algebra, and Applications
     Douglas Lundholm, Lars Svensson | arXiv, Published in 2009, 117 pages
199. Formal Logic
     | Wikibooks, Published in 2009
200. Mathematical Philosophy: A Study of Fate and Freedom
     Cassius Jackson Keyser | E.P. Dutton & company, Published in 1922, 490 pages
201. Linear Algebra: An Introduction to Mathematical Discourse
     | Wikibooks, Published in 2011
202. Lectures on Linear Algebra and Matrices
     G. Donald Allen | Texas A&M University, Published in 2003, 238 pages
203. Geometry with an Introduction to Cosmic Topology
     Mike Hitchman | , Published in 2017, 177 pages
204. Bernoulli Polynomials and Applications
     Omran Kouba | arXiv, Published in 2013, 48 pages
205. Active Calculus
     Matt Boelkins | Grand Valley State University, Published in 2013, 525 pages
206. The Canterbury Puzzles and Other Curious Problems
     Henry Ernest Dudeney | Nelson, Published in 1919, 257 pages
207. Discrepancy Theory
     William Chen | Macquarie University, Published in 2012, 99 pages
208. Lectures On Galois Cohomology of Classical Groups
     M. Kneser | Tata Institute of Fundamental Research, Published in 1969, 212 pages
209. A Handbook of Statistics
     Darius Singpurwalla | Bookboon, Published in 2013, 79 pages
210. Linear Algebra: A Course for Physicists and Engineers
     Arak Mathai,‎ Hans J. Haubold | De Gruyter Open, Published in 2017, 450 pages
211. Revealing Statistical Principles
     J.K. Lindsey | Hodder Education Publishers, Published in 1999, 225 pages
212. Elementary Differential Geometry
     Gilbert Weinstein | UAB, Published in 2009, 62 pages
213. Notes on Differential Geometry
     Noel J. Hicks | Van Nostrand, Published in 1965, 183 pages
214. Think Bayes: Bayesian Statistics Made Simple
     Allen B. Downey | Green Tea Press, Published in 2012, 77 pages
215. Calculus for Beginners and Artists
     Daniel Kleitman | MIT, Published in 2009
216. The Smarandache Function
     C. Dumitrescu, V. Seleacu | Erhus University Press, Published in 1996, 137 pages
217. Linear Algebra
     Jonathan Gleason | University of California, Published in 2018, 681 pages
218. Theory of the Integral
     Stanislaw Saks | Polish Mathematical Society, Published in 1937, 347 pages
219. Tunneling Through the Math Barrier
     William J. Meese | arXiv.org, Published in 2018, 187 pages
220. A Course In Algebraic Number Theory
     Robert B. Ash | University of Illinois, Published in 2003
221. Diffeomorphisms of Elliptic 3-Manifolds
     S. Hong, J. Kalliongis, D. McCullough, J. H. Rubinstein | arXiv, Published in 2011, 185 pages
222. Introduction to the Numerical Integration of PDEs
     B. Piette | University of Durham, Published in 2004, 89 pages
223. Introduction to Analytic Number Theory
     A.J. Hildebrand | University of Illinois, Published in 2006, 197 pages
224. An Introduction to Modular Forms
     Henri Cohen | arXiv.org, Published in 2018, 58 pages
225. An informal introduction to the ideas and concepts of noncommutative geometry
     Thierry Masson | arXiv, Published in 2006, 56 pages
226. Introduction to Analysis
     Ray Mayer | Reed College, Published in 2006, 291 pages
227. Markov Chains and Mixing Times
     D. A. Levin, Y. Peres, E. L. Wilmer | American Mathematical Society, Published in 2008, 387 pages
228. Functions Modeling Change: A Precalculus Course
     Marcel B. Finan | Arkansas Tech University, Published in 2003, 239 pages
229. Why are Braids Orderable?
     Patrick Dehornoy, at al. | , Published in 2010, 206 pages
230. Functional Analysis
     Feng Tian, Palle E.T. Jorgensen | arXiv, Published in 2010, 98 pages
231. Multiplication of Vectors and Structure of 3D Euclidean Space
     Miroslav Josipovic | viXra, Published in 2016, 70 pages
232. Ten British Mathematicians
     Alexander Macfarlane | , Published in 1916, 108 pages
233. Second-order Ordinary Differential Equations
     R.S. Johnson | Bookboon, Published in 2012, 181 pages
234. Functional Analysis
     Alexander C. R. Belton | Lancaster University, Published in 2006, 127 pages
235. Symbolic Logic
     Lewis Carroll | Macmillan and co, Published in 1897
236. Lies, Damned Lies, or Statistics: How to Tell the Truth with Statistics
     Jonathan A. Poritz | Colorado State University, Pueblo, Published in 2017, 143 pages
237. Graduate Algebra
     Leonard Evens | Northwestern University, Published in 1999, 160 pages
238. Interactive Real Analysis
     Bert G. Wachsmuth | Seton Hall University, Published in 2007
239. A History of Mathematics
     Florian Cajori | The MacMillan Company, Published in 1909, 556 pages
240. Introduction to the Theory of Infinite-Dimensional Dissipative Systems
     Constantin I. Chueshov | ACTA, Published in 2002, 419 pages
241. Ordinary Differential Equations and Dynamical Systems
     Gerald Teschl | Universitaet Wien, Published in 2009, 297 pages
242. Introduction to Graphs
     Alexander K. Hartmann, Martin Weigt | arXiv, Published in 2006, 45 pages
243. Multivector Differential Calculus
     Eckhard Hitzer | arXiv, Published in 2013, 43 pages
244. The Principles Of Mathematics
     Bertrand Russell | W. W. Norton & Company, , 579 pages
245. Operators on Hilbert Space
     John Erdos | King's College London, Published in 2004, 52 pages
246. The Millennium Prize Problems
     J. Carlson, A. Jaffe, A. Wiles | American Mathematical Society, Published in 2006, 139 pages
247. Category Theory in Context
     Emily Riehl | Dover Publications, Published in 2016, 258 pages
248. Algorithms in Real Algebraic Geometry
     S. Basu, R. Pollack, M. Roy | Springer, Published in 2009, 672 pages
249. Quantitative Analysis: Algebra with a Business Perspective
     Donna M. Wacha | Bookboon, Published in 2013, 303 pages
250. Lectures on Analytic Differential Equations
     Yulij Ilyashenko, Sergei Yakovenko | American Mathematical Society, Published in 2007, 599 pages
251. Nonstandard Analysis
     J. Ponstein | , Published in 2002, 147 pages
252. A Short Introduction to Classical and Quantum Integrable Systems
     O. Babelon | , Published in 2007, 145 pages
253. Advanced Calculus
     Lynn H. Loomis, Shlomo Sternberg | Jones and Bartlett Publishers, Published in 1989, 592 pages
254. Geometry of the Quintic
     Jerry Shurman | Wiley-Interscience, Published in 1997, 208 pages
255. Proofs in Mathematics
     Alexander Bogomolny | Interactive Mathematics Miscellany and Puzzles, Published in 2013, 272 pages
256. Math Alive
     Ingrid Daubechies, Shannon Hughes | Princeton University, Published in 2008, 454 pages
257. Origami and Geometric Constructions
     Robert J. Lang | , Published in 2003, 55 pages
258. High-dimensional Knot Theory
     Andrew Ranicki | Springer, Published in 1998, 693 pages
259. Topics in the Theory of Quadratic Residues
     Steve Wright | arXiv, Published in 2014, 160 pages
260. Vector Math for 3D Computer Graphics
     Bradley Kjell | Central Connecticut State University, Published in 2003
261. Hilbert Spaces and Operators on Hilbert Spaces
     Leif Mejlbro | BookBoon, Published in 2009, 109 pages
262. Engineering Mathematics: YouTube Workbook
     Christopher C. Tisdell | BookBoon, Published in 2012, 114 pages
263. Variational Modelling: Energies, gradient flows, and large deviations
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390. Euclid's Elements
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