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. A First Course in Topology: Continuity and Dimension
   John McCleary | American Mathematical Society, Published in 2006, 210 pages
2. Partial Differential Equations with Maple
   Robert Piche, Keijo Ruohonen | Tampere University of Technology, Published in 1997, 131 pages
3. Lectures on the topological recursion for Higgs bundles and quantum curves
   Olivia Dumitrescu, Motohico Mulase | arXiv, Published in 2015, 69 pages
4. Amusements in Mathematics
   Henry Ernest Dudeney | Nelson, Published in 1917, 280 pages
5. The Octonions
   John C. Baez | University of California, Published in 2001, 56 pages
6. A Summary of Calculus
   Karl Heinz Dovermann | University of Hawaii, Published in 2003, 164 pages
7. Real Numbers and Fascinating Fractions
   N. M. Beskin | , Published in 1986
8. Lectures on Some Aspects of p-Adic Analysis
   F. Bruhat | Tata Institute of Fundamental Research, Published in 1963, 147 pages
9. Computer Age Statistical Inference: Algorithms, Evidence, and Data Science
   Bradley Efron, Trevor Hastie | Stanford University, Published in 2016, 493 pages
10. Operator Algebras and Quantum Statistical Mechanics
    Ola Bratteli, Derek W. Robinson | Springer, Published in 2003, 505 pages
11. Linear Algebra, Infinite Dimensions, and Maple
    James V. Herod | Georgia Tech, Published in 1997
12. Complex Manifolds and Hermitian Differential Geometry
    Andrew D. Hwang | University of Toronto, Published in 1997, 113 pages
13. Abstract Algebra: Theory and Applications
    Thomas Judson | Virginia Commonwealth University Mathematics, Published in 2009, 428 pages
14. A Course in Riemannian Geometry
    David R. Wilkins | Trinity College, Dublin, Published in 2005, 72 pages
15. Lectures on Representation Theory and Invariant Theory
    William Crawley-Boevey | University of Leeds, Published in 1990, 77 pages
16. Convergence of Stochastic Processes
    D. Pollard | Springer, Published in 1984, 223 pages
17. Introduction to the Basics of Heegaard Floer Homology
    Bijan Sahamie | arXiv, Published in 2010, 71 pages
18. Lectures on Differential Geometry
    John Douglas Moore | University of California, Published in 2009, 263 pages
19. CK-12 Single Variable Calculus
    R. Almukkahal, V. Cifarelli, C. Fan, L. Jarvis | CK-12 Foundation, Published in 2009, 457 pages
20. A Sampler of Riemann-Finsler Geometry
    D. Bao, R. Bryant, S. Chern, Z. Shen | Cambridge University Press, Published in 2004, 376 pages
21. Functions of a Complex Variable
    Thomas S. Fiske | John Wiley & sons, Published in 1907, 122 pages
22. Elementary Abstract Algebra
    W. Edwin Clark | University of South Florida, Published in 2001, 105 pages
23. A Minimum of Stochastics for Scientists
    Noel Corngold | Caltech, Published in 2009, 77 pages
24. Shadows of the Truth: Metamathematics of Elementary Mathematics
    Alexandre Borovik | American Mathematical Society, Published in 2010, 293 pages
25. Exposition of the Theory of Chances and Probabilities
    A. A. Cournot | arXiv.org, Published in 2013, 216 pages
26. Abstract Algebra for Polynomial Operations
    Maya Mohsin Ahmed | , Published in 2009, 210 pages
27. Probabilistic Programming and Bayesian Methods for Hackers
    Cameron Davidson-Pilon | GitHub, Inc., Published in 2013
28. Philosophy and Fun of Algebra
    Mary Everest Boole | C. W. Daniel, Published in 1891, 56 pages
29. An Introduction to Mathematical Reasoning
    Peter J. Eccles | Cambridge University Press, Published in 2007, 364 pages
30. Prerequisites in Algebraic Topology
    Bjorn Ian Dundas | NTNU, Published in 2005, 55 pages
31. Set Theory and Topology: An Introduction to the Foundations of Analysis
    Felix Nagel | arXiv, Published in 2013, 160 pages
32. Symbolic Logic: A Second Course
    Gary Hardegree | UMass Amherst, Published in 2003, 246 pages
33. Intermediate Algebra
    Donna Gaudet, et al. | Scottsdale Community College, Published in 2013, 480 pages
34. College Trigonometry
    Carl Stitz, Jeff Zeager | Stitz Zeager Open Source Mathematics, Published in 2013, 398 pages
35. Applied Linear Algebra in Action
    Vasilios N. Katsikis | InTech, Published in 2016, 172 pages
36. Introduction to the Method of Multiple Scales
    Per Jakobsen | arXiv, Published in 2014, 65 pages
37. Calculus Illustrated
    Peter Saveliev | , Published in 2020, 430 pages
38. Numerical Analysis: Theory and Application
    Jan Awrejcewicz | InTech, Published in 2011, 626 pages
39. Descriptive Set Theory
    David Marker | University of Illinois at Chicago, Published in 2002, 105 pages
40. Introduction to Matrix Algebra
    Autar K Kaw | University of South Florida, Published in 2002, 192 pages
41. Group theory for Maths, Physics and Chemistry
    Arjeh Cohen, Rosane Ushirobira, Jan Draisma | , Published in 2007, 93 pages
42. Analytic Combinatorics
    Philippe Flajolet, Robert Sedgewick | Cambridge University Press, Published in 2008, 822 pages
43. Contributions to Fourier Analysis
    A. Zygmund, et al. | Princeton University Press, Published in 1950, 207 pages
44. Lectures on Algebraic Groups
    Alexander Kleshchev | University of Oregon, Published in 2005, 166 pages
45. Lectures on the Algebraic Theory of Fields
    K.G. Ramanathan | Tata Institute of Fundamental Research, Published in 1956, 228 pages
46. Real Harmonic Analysis
    Pascal Auscher, Lashi Bandara | ANU eView, Published in 2012, 113 pages
47. Introduction to Differential Topology, de Rham Theory and Morse Theory
    Michael Muger | Radboud University, Published in 2005, 80 pages
48. A History of the Progress of the Calculus of Variations during the Nineteenth Century
    Isaac Todhunter | Adamant Media Corporation, Published in 2005, 549 pages
49. Riemann Surfaces, Dynamics and Geometry
    Curtis McMullen | Harvard University, Published in 2008, 167 pages
50. Elementary Statistical Methods
    Christian Akrong Hesse | ResearchGate GmbH, Published in 2011, 83 pages
51. The Design of Approximation Algorithms
    D. P. Williamson, D. B. Shmoys | Cambridge University Press, Published in 2010, 496 pages
52. The Philosophy of Mathematics
    Auguste Comte | Harper & brothers, Published in 1851, 276 pages
53. Dynamics in One Complex Variable
    John Milnor | Princeton University Press, Published in 1991, 146 pages
54. Graphical Calculus
    Arthur Henry Barker | Longmans, Green, and Co., Published in 1896, 188 pages
55. Endless Amusement
    | Lea and Blanchard, Published in 1847, 217 pages
56. Special Fuzzy Matrices for Social Scientists
    W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | InfoLearnQuest, Published in 2007, 302 pages
57. Random Walks and Electric Networks
    Peter G. Doyle, J. Laurie Snell | Dartmouth College, Published in 2006, 118 pages
58. Problems with and Without ... Problems!
    Florentin Smarandache | viXra, Published in 2011, 136 pages
59. 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
60. Math That Makes You Go Wow
    M. Boittin, E. Callahan, D. Goldberg, J. Remes | Ohio State University, Published in 1998
61. Calculus Made Easy
    Silvanus P. Thompson | The MacMillan Company, Published in 1914, 315 pages
62. Natural Operations in Differential Geometry
    Ivan Kolar, Peter W. Michor, Jan Slovak | Springer, Published in 1993, 437 pages
63. Introduction to Topology
    Alex Kuronya | , Published in 2010, 102 pages
64. Elements of Applied Mathematics
    Cobb Herbert E. | Ginn and Company, Published in 1911, 292 pages
65. Stats without Tears
    Stan Brown | BrownMath.com, Published in 2016, 243 pages
66. Surgery on Compact Manifolds
    C.T.C. Wall, A. A. Ranicki | American Mathematical Society, Published in 1999, 314 pages
67. Diophantine Analysis
    R. D. Carmichael | John Wiley & Sons, Published in 1915, 120 pages
68. SPSS: Stats Practically Short and Simple
    Sidney Tyrrell | BookBoon, Published in 2009, 83 pages
69. Street-Fighting Mathematics
    Sanjoy Mahajan | The MIT Press, Published in 2010, 153 pages
70. Functional Analysis Lecture Notes
    T.B. Ward | University of East Anglia, Published in 2001, 73 pages
71. Lectures on Lipschitz Analysis
    Juha Heinonen | , Published in 2005, 77 pages
72. Several Complex Variables
    Michael Schneider, Yum-Tong Siu | Cambridge University Press, Published in 1999, 564 pages
73. An Introduction to Stochastic PDEs
    Martin Hairer | arXiv, Published in 2009, 78 pages
74. Fundamentals of Geometry
    Oleg A. Belyaev | Moscow State University, Published in 2007, 256 pages
75. Model Theory
    Stephen G. Simpson | The Pennsylvania State University, Published in 1998, 127 pages
76. Strange Attractors: Creating Patterns in Chaos
    Julien C. Sprott | M & T Books, Published in 2000, 591 pages
77. Computing of the Complex Variable Functions
    Solomon I. Khmelnik, Inna S. Doubson | MiC, Published in 2011, 46 pages
78. Residues and Duality
    Robin Hartshorne | Springer, Published in 1966, 434 pages
79. Introduction to Evolution Equations in Geometry
    Bianca Santoro | arXiv, Published in 2012, 91 pages
80. Matrix Analysis
    Steven J Cox | Rice University, Published in 2012, 98 pages
81. Essential Engineering Mathematics
    Michael Batty | BookBoon, Published in 2011, 149 pages
82. Applied Analysis
    J. Hunter, B. Nachtergaele | World Scientific Publishing Company, Published in 2005, 439 pages
83. Fundamentals of Analysis
    W W L Chen | Macquarie University, Published in 2008, 152 pages
84. Lectures on An Introduction to Grothendieck's Theory of the Fundamental Group
    J.P. Murre | Tata Institute of Fundamental Research, Published in 1967, 143 pages
85. Probability and Theory of Errors
    Robert Simpson Woodward | J. Wiley & Sons, Published in 1906, 64 pages
86. Lectures on Cauchy Problem
    Sigeru Mizohata | Tata Institute of Fundamental Research, Published in 1965, 191 pages
87. Analytical Geometry for Beginners
    Alfred Baker | W. J. Gage, Published in 1905, 234 pages
88. Constructive Geometry
    John G. Kerr | Blackie And Son Limited., Published in 1904, 135 pages
89. Elliptic Functions
    Arthur Latham Baker | John Wiley & Sons, Published in 1890, 147 pages
90. Practical Mathematics
    A.H. Bell | Blackie And Son Limited, Published in 1919, 356 pages
91. Elementary Differential Equations with Boundary Value Problems
    William F. Trench | Brooks Cole, Published in 2013, 807 pages
92. Mathematical Methods of Engineering Analysis
    Erhan Cinlar, Robert J. Vanderbei | , Published in 2000, 119 pages
93. Algebraic Invariants
    Leonard E. Dickson | J. Wiley & Sons, Published in 1914, 122 pages
94. New Directions in Hopf Algebras
    S. Montgomery, H. Schneider | Cambridge University Press, Published in 2002, 485 pages
95. Linear Algebra C-2: Geometrical Vectors, Vector Spaces and Linear Maps
    Leif Mejlbro | BookBoon, Published in 2009, 126 pages
96. An Introduction to Hilbert Module Approach to Multivariable Operator Theory
    Jaydeb Sarkar | arXiv, Published in 2013, 52 pages
97. A Philosophical Essay on Probabilities
    Pierre Simon Laplace | Chapman & Hall, Published in 1902, 234 pages
98. Manifolds: Current Research Areas
    Paul Bracken (ed.) | InTech, Published in 2017, 158 pages
99. Logic and Proof
    Lawrence C Paulson | University of Cambridge, Published in 2002, 79 pages
100. The Place of Partial Differential Equations in Mathematical Physics
     Ganesh Prasad | Patna University, Published in 1924, 64 pages
101. Lectures on Exterior Differential Systems
     M. Kuranishi | Tata Institute of Fundamental Research, Published in 1962, 117 pages
102. Classical Algebraic Geometry: A Modern View
     Igor V. Dolgachev | Cambridge University Press, Published in 2012, 716 pages
103. Bayesian Networks: Advances and Novel Applications
     Douglas McNair (ed.) | IntechOpen, Published in 2019, 256 pages
104. Beginning Statistics
     Douglas S. Shafer, Zhiyi Zhang | lardbucket.org, Published in 2014, 716 pages
105. Workbook in Higher Algebra
     David Surowski | , Published in 1992, 194 pages
106. Lectures on Fundamental Concepts of Algebra and Geometry
     John Wesley Young | Macmillan and co., Published in 1917, 264 pages
107. H Ring Spectra and Their Applications
     R. R. Bruner, J. P. May, J. E. McClure, M. Steinberger | Springer, Published in 1986, 400 pages
108. Discrete Mathematics: An Open Introduction
     Oscar Levin | University of Northern Colorado, Published in 2017, 345 pages
109. Toposes, Triples and Theories
     Michael Barr, Charles Wells | Springer-Verlag, Published in 2005, 302 pages
110. Mathematics in the Age of the Turing Machine
     Thomas Hales | arXiv, Published in 2013, 45 pages
111. Mathematical Tools for Physics
     James Nearing | Dover Publications, Published in 2010, 569 pages
112. An Introduction to Partial Differential Equations
     Per Kristen Jakobsen | arXiv.org, Published in 2019, 226 pages
113. Mathematical Computation
     Ian Craw | University of Aberdeen, Published in 2003, 156 pages
114. Linear Algebra C-4: Quadratic equations in two or three variables
     Leif Mejlbro | BookBoon, Published in 2009, 74 pages
115. Langlands Correspondence for Loop Groups
     Edward Frenkel | Cambridge University Press, Published in 2007, 393 pages
116. Graph Theory Lessons
     Christopher P. Mawata | Math Cove, Published in 2018, 384 pages
117. Euclid's Elements of Geometry
     J.L. Heiberg, R. Fitzpatrick | , Published in 2008, 545 pages
118. Distribution Theory (Generalized Functions)
     Ivan F Wilde | , Published in 2005, 66 pages
119. Homotopy Theories and Model Categories
     W. G. Dwyer, J. Spalinski | University of Notre Dame, Published in 1995, 56 pages
120. Entropy of Compact Group Automorphisms
     Thomas Ward | University of East Anglia, Published in 2001, 84 pages
121. An Introduction to the Theory of Numbers
     Leo Moser | The Trillia Group, Published in 2007, 95 pages
122. A First Course on Time Series Analysis with SAS
     Michael Falk at al. | University of Wuerzburg, Published in 2011, 364 pages
123. Introduction to Categories and Categorical Logic
     Samson Abramsky, Nikos Tzevelekos | arXiv, Published in 2011, 101 pages
124. Varieties of Lattices
     Peter Jipsen, Henry Rose | Springer, Published in 1992, 168 pages
125. Fractal Analysis
     Sid-Ali Ouadfeul (ed.) | InTech, Published in 2019, 312 pages
126. Functional Analysis with Applications
     Palle Jorgensen, Feng Tian | arXiv, Published in 2014, 338 pages
127. Principles of Data Analysis
     Cappella Archive | Prasenjit Saha, Published in 2003, 113 pages
128. A Modern Course on Curves and Surfaces
     Richard S. Palais | virtualmathmuseum.org, Published in 2003, 163 pages
129. Graduate Algebra
     Leonard Evens | Northwestern University, Published in 1999, 160 pages
130. Lectures on Elliptic Partial Differential Equations
     J.L. Lions | Tata Institute of Fundamental Research, Published in 1957, 121 pages
131. The Elements of Analytic Geometry
     Percey F. Smith, A. S. Gale | Ginn & company, Published in 1904, 450 pages
132. The Calculus for Engineers
     John Perry | E. Arnold, Published in 1897, 408 pages
133. On Advanced Analytic Number Theory
     C.L. Siegel | Tata Institute of Fundamental Research, Published in 1961, 241 pages
134. Introductory Map Theory
     Yanpei Liu | Kapa & Omega, Published in 2010, 503 pages
135. Applied Finite Mathematics
     Rupinder Sekhon | Connexions, Published in 2011, 347 pages
136. The Elements of the Theory of Algebraic Numbers
     Legh Wilber Reid | The Macmillan company, Published in 1910, 488 pages
137. Topology Lecture Notes
     Thomas Ward | UEA, Published in 2001, 88 pages
138. The Fourth Dimension
     Charles Howard Hinton | S. Sonnenschein & Co., Published in 1906, 288 pages
139. Knot Invariants and Higher Representation Theory
     Ben Webster | arXiv, Published in 2013, 87 pages
140. Proofs in Mathematics
     Alexander Bogomolny | Interactive Mathematics Miscellany and Puzzles, Published in 2013, 272 pages
141. Vector Analysis Notes
     Matthew Hutton | matthewhutton.com, Published in 2006, 63 pages
142. Algebraic Methods
     F. Oggier | Nanyang Technological University, Published in 2010, 129 pages
143. Numerical Methods Course Notes
     Steven E. Pav | University of California at San Diego, Published in 2005, 180 pages
144. Complex Analysis
     Christian Berg | Kobenhavns Universitet, Published in 2012, 192 pages
145. Calculus III
     Paul Dawkins | Lamar University, Published in 2011, 287 pages
146. Substitutions in Dynamics, Arithmetics, and Combinatorics
     Pierre Arnoux, et al. | Springer, Published in 2002, 419 pages
147. The Chaos Hypertextbook
     Glenn Elert | , Published in 2007
148. Tilings and Patterns
     E O Harriss | Mathematicians.org.uk, Published in 2008, 43 pages
149. Natural Product Xn on matrices
     W. B. Vasantha Kandasamy, Florentin Smarandache | arXiv, Published in 2012, 342 pages
150. Famous Problems of Elementary Geometry
     Felix Klein | Ginn and Co., Published in 1897, 108 pages
151. Elementary Theory of Numbers
     Waclaw Sierpinski | ICM, Published in 1964, 516 pages
152. H2 Mathematics Textbook
     Yan Min Choo | , Published in 2016, 1384 pages
153. First Principles of Symmetrical Beauty
     David Ramsay Hay | W. Blackwood and sons, Published in 1846, 305 pages
154. Multivector Differential Calculus
     Eckhard Hitzer | arXiv, Published in 2013, 43 pages
155. Introduction to Functional Analysis
     Vladimir V. Kisil | University of Leeds, Published in 2021, 166 pages
156. Unfolding the Labyrinth: Open Problems in Mathematics, Physics, Astrophysics
     Florentin Smarandache, at al. | arXiv, Published in 2006, 139 pages
157. Spectral Theory of Partial Differential Equations
     Richard S. Laugesen | arXiv, Published in 2012, 120 pages
158. Differentiable Manifolds
     Nigel Hitchin | , Published in 2003, 94 pages
159. Just the Maths
     A. J. Hobson | , Published in 2002, 1296 pages
160. An Introduction to Higher Mathematics
     Patrick Keef, David Guichard, Russ Gordon | Whitman College, Published in 2010, 144 pages
161. Exact Sequences in the Algebraic Theory of Surgery
     Andrew Ranicki | Princeton University Press, Published in 1981, 881 pages
162. Applied Analysis
     I.M. Sigal, M. Merkli | University of Toronto, Published in 2001, 176 pages
163. Introduction to Real Analysis
     William F. Trench | Prentice Hall, Published in 2003, 583 pages
164. Elementary Geometry: Practical and Theoretical
     C. Godfrey, A. W. Siddons | Cambridge University Press, Published in 1919, 438 pages
165. Symplectic Geometry of Quantum Noise
     Leonid Polterovich | arXiv, Published in 2012, 57 pages
166. An Introduction to High Dimensional Knots
     Eiji Ogasa | arXiv, Published in 2013, 92 pages
167. The Principles Of Mathematics
     Bertrand Russell | W. W. Norton & Company, , 579 pages
168. Lectures on Stochastic Flows and Applications
     H. Kunita | Tata Institute Of Fundamental Research, Published in 1986, 130 pages
169. Grassmann Algebra
     John Browne | , Published in 2001, 238 pages
170. Determinants and Matrices
     R. Kochendörfer | Teubner, Published in 1961
171. Notes on Differential Equations
     Bob Terrell | , Published in 2005, 99 pages
172. Algebraic Geometry
     J.S. Milne | , Published in 2008, 241 pages
173. Markov Chains and Stochastic Stability
     S.P. Meyn, R.L. Tweedie | Springer, Published in 2005, 567 pages
174. Theory and Applications of Ordered Fuzzy Numbers
     Piotr Prokopowicz, et al. | Springer, Published in 2017, 322 pages
175. An Architecture for Combinator Graph Reduction
     Philip J. Koopman, Jr. | Academic Press, Published in 1990, 176 pages
176. Deformations of Algebras in Noncommutative Geometry
     Travis Schedler | arXiv, Published in 2015, 120 pages
177. Real Analysis
     A. M. Bruckner, J. B. Bruckner, B. S. Thomson | Prentice Hall, Published in 1997, 713 pages
178. Geometric Topology: Localization, Periodicity and Galois Symmetry
     Dennis Sullivan | Springer, Published in 2005, 296 pages
179. Linear Algebra
     Paul Dawkins | Lamar University, Published in 2011, 331 pages
180. Elements of Abstract and Linear Algebra
     Edwin H. Connell | , Published in 2004, 146 pages
181. Probability and Statistics: A Course for Physicists and Engineers
     Arak M. Mathai, Hans J. Haubold | De Gruyter Open, Published in 2017, 582 pages
182. Holomorphic Spaces
     S. Axler, J. McCarthy, D. Sarason | Cambridge University Press, Published in 1998, 476 pages
183. Elementary Calculus: An Approach Using Infinitesimals
     H. Jerome Keisler | Bodgen & Quigley, Published in 2012, 992 pages
184. Precalculus
     David H. Collingwood, K. David Prince, Matthew M. Conroy | , Published in 2011, 335 pages
185. Theory of Functions of a Complex Variable
     Heinrich Burkhardt | D. C. Heath, Published in 1913, 456 pages
186. Lectures on Calabi-Yau and Special Lagrangian Geometry
     Dominic Joyce | arXiv, Published in 2002, 58 pages
187. An Introduction to D-Modules
     Jean-Pierre Schneiders | Universite de Liege, Published in 1991, 73 pages
188. Lectures on Numerical Analysis
     Dennis Deturck, Herbert S. Wilf | University of Pennsylvania, Published in 2002, 125 pages
189. Engineering Mathematics: YouTube Workbook
     Christopher C. Tisdell | BookBoon, Published in 2012, 114 pages
190. Essentials of Trigonometry with Applications
     D.R. Curtiss, E.J. Moulton | D. C. Heath And Company, Published in 1942, 190 pages
191. Symplectic Reflection Algebras
     Gwyn Bellamy | arXiv, Published in 2012, 64 pages
192. Mathematical Theory of Scattering Resonances
     Semyon Dyatlov, Maciej Zworski | MIT, Published in 2018, 640 pages
193. Axiomatic Set Theory I
     A. C. Walczak-Typke | , Published in 2009, 128 pages
194. Elliptic Curves over Function Fields
     Douglas Ulmer | arXiv, Published in 2011, 72 pages
195. Design of Comparative Experiments
     R. A. Bailey | Cambridge University Press, Published in 2008, 348 pages
196. First Year Calculus
     W W L Chen | Macquarie University, Published in 2008, 238 pages
197. Commutative Algebra and Noncommutative Algebraic Geometry
     David Eisenbud, et al. | Cambridge University Press, Published in 2015, 775 pages
198. An Introductory Course in Elementary Number Theory
     Wissam Raji | The Saylor Foundation, Published in 2013, 171 pages
199. Lectures notes on compact Riemann surfaces
     Bertrand Eynard | arXiv.org, Published in 2018, 119 pages
200. Solving PDEs in Python
     Hans Petter Langtangen, Anders Logg | Springer, Published in 2017, 148 pages
201. Essentials of Statistics: Exercises
     David Brink | BookBoon, Published in 2008, 58 pages
202. Trigonometry
     Ted Sundstrom, Steven Schlicker | Grand Valley State University, Published in 2016, 442 pages
203. Sam Loyd's Cyclopedia of 5000 Puzzles tricks and Conundrums
     Sam Loyd | The Lamb Publishing Company, Published in 1914, 194 pages
204. Complex Multiplication
     J. S. Milne | , Published in 2006, 113 pages
205. Introduction to Probability
     C. M. Grinstead, J. L. Snell | American Mathematical Society, Published in 1997, 518 pages
206. Algebra I
     | CK-12 Foundation, Published in 2009, 992 pages
207. Introduction to Applied Linear Algebra: Vectors, Matrices and Least Squares
     Stephen Boyd, Lieven Vandenberghe | Cambridge University Press, Published in 2018, 473 pages
208. Elementary Illustrations of the Differential and Integral Calculus
     Augustus De Morgan | The Open Court Pub. Co., Published in 1899, 194 pages
209. Lectures On Galois Cohomology of Classical Groups
     M. Kneser | Tata Institute of Fundamental Research, Published in 1969, 212 pages
210. Lectures on Linear Logic
     A. S. Troelstra | CSLI, Published in 1992, 215 pages
211. Blast Into Math!
     Julie Rowlett | BookBoon, Published in 2013, 215 pages
212. The Life of Pi: From Archimedes to Eniac and Beyond
     Jonathan M. Borwein | DocServer, Published in 2010, 30 pages
213. The Elements of Solid Geometry
     William C. Bartol | Leach, Shewell & Sanborn, Published in 1893, 112 pages
214. Higher Mathematics for Students of Chemistry and Physics
     Joseph William Mellor | Longmans, Green, Published in 1902, 580 pages
215. Problems in Mathematical Analysis
     B. P. Demidovich | MIR Publishers, , 511 pages
216. Data Assimilation: A Mathematical Introduction
     K.J.H. Law, A.M. Stuart, K.C. Zygalakis | arXiv.org, Published in 2015, 158 pages
217. Chance and Luck
     Richard A. Proctor | Longmans, Green, and Co., Published in 1887, 164 pages
218. Geometry of Numbers with Applications to Number Theory
     Pete L. Clark | University of Georgia, Published in 2015, 159 pages
219. Archimedes
     Thomas Little Heath | , Published in 1920, 76 pages
220. An Introduction to Geometry
     Wong Yan Loi | National University of Singapore, Published in 2021, 145 pages
221. An Episodic History of Mathematics
     Steven G. Krantz | Mathematical Association of America, Published in 2006, 483 pages
222. Calculus Concentrate
     Russell A. Gordon | Whitman College, Published in 2006, 182 pages
223. The Elements Of Non-Euclidean Geometry
     Julian Lowell Coolidge | Oxford At The Clarendon Press, Published in 1909, 282 pages
224. Fractal Geometry
     Michael Frame, Benoit Mandelbrot, Nial Neger | Yale University, Published in 2009, 323 pages
225. Linear Programming
     Jim Burke | University of Washington, Published in 2012
226. A Short History of Greek Mathematics
     James Gow | Cambridge University Press, Published in 1884, 351 pages
227. An Introduction to K-theory and Cyclic Cohomology
     Jacek Brodzki | arXiv, Published in 1996, 115 pages
228. Lecture Notes on Differentiable Manifolds
     Jie Wu | National University of Singapore, Published in 2004, 78 pages
229. Surreal Numbers: An Introduction
     Claus Tondering | , Published in 2013, 50 pages
230. Fractals
     | Wikibooks, Published in 2013
231. Perturbation Theory of Dynamical Systems
     Nils Berglund | arXiv, Published in 2001, 111 pages
232. Recreations in Mathematics
     H E. Licks | D. Van Nostrand Company, Published in 1917, 163 pages
233. Applied Mathematical Programming Using Algebraic Systems
     Bruce A. McCarl, Thomas H. Spreen | Texas A&M University, Published in 2011, 567 pages
234. Notes on the Atiyah-Singer Index Theorem
     Liviu I. Nicolaescu | University of Notre Dame, Published in 2005, 135 pages
235. A Course in Mathematical Analysis
     E. Goursat, O. Dunkel, E.R. Hedrick | Ginn & company, Published in 1904, 1890 pages
236. Probability, Random Processes, and Ergodic Properties
     Robert M. Gray | Springer, Published in 2008, 217 pages
237. Probability Course
     Gian-Carlo Rota | David Ellerman, Published in 1998, 544 pages
238. Lectures on Sieve Methods
     H.E. Richert | Tata Institute of Fundamental Research, Published in 1976, 216 pages
239. Calculus Unlimited
     Jerrold E. Marsden, A. Weinstein | Benjamin-Cummings Publishing Co., Published in 1981, 246 pages
240. The Foundations of Analysis
     Larry Clifton | arXiv, Published in 2013, 48 pages
241. Abstract Set Theory
     Thoralf A. Skolem | University of Notre Dame, Published in 1962, 70 pages
242. Lower K- and L-theory
     Andrew Ranicki | Cambridge University Press, Published in 2001, 177 pages
243. An introduction to Algebra and Topology
     Pierre Schapira | University of Luxemburg, Published in 2012, 78 pages
244. The Air Force Brain Booster Book
     John C. Sparks | Air Force Publication, Published in 2006, 58 pages
245. Intuitive Infinitesimal Calculus
     Viktor Blasjo | Intellectual Mathematics, Published in 2015, 98 pages
246. Ample Subvarieties of Algebraic Varieties
     Robin Hartshorne | Springer, Published in 1970, 273 pages
247. Diffeomorphisms of Elliptic 3-Manifolds
     S. Hong, J. Kalliongis, D. McCullough, J. H. Rubinstein | arXiv, Published in 2011, 185 pages
248. Coordinate Geometry
     Henry B. Fine, Henry D. Thompson | The MacMillan Company, Published in 1911, 318 pages
249. Hyperbolic Functions
     James McMahon | John Wiley & Sons, Published in 1906, 106 pages
250. Combinatorial Geometry with Application to Field Theory
     Linfan Mao | InfoQuest, Published in 2009, 499 pages
251. Calculus and Linear Algebra. Vol. 2
     Wilfred Kaplan, Donald J. Lewis | University of Michigan Library, Published in 2007, 606 pages
252. Geometry: From Ancient to Modern
     Wong Yan Loi | National University of Singapore, Published in 1999, 52 pages
253. Harmonic Analysis
     S.R.S. Varadhan | New York University, Published in 2019, 82 pages
254. A Course of Modern Analysis
     E. T. Whittaker, G. N. Watson | Cambridge University Press, Published in 1920, 608 pages
255. Euclid's 'Elements' Redux
     Daniel Callahan | starrhorse.com, Published in 2014, 359 pages
256. A Treatise on the Theory of Invariants
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