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. Algebra Study Guide
   John Redden | , Published in 2012, 211 pages
2. Special Fuzzy Matrices for Social Scientists
   W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | InfoLearnQuest, Published in 2007, 302 pages
3. Topics in Logic and Foundations
   Stephen G. Simpson | The Pennsylvania State University, Published in 2005, 89 pages
4. Plane and Solid Analytic Geometry
   W. F. Osgood, W. C. Graustein | Macmillan and co., Published in 1921, 651 pages
5. Basic Real Analysis
   Anthony W. Knapp | Birkhäuser, Published in 2016, 840 pages
6. Exterior Differential Systems
   Robert L. Bryant, et al. | MSRI, Published in 1991, 406 pages
7. Revealing Statistical Principles
   J.K. Lindsey | Hodder Education Publishers, Published in 1999, 225 pages
8. Arimaa
   | Wikibooks, Published in 2011
9. An Introduction to Determinants
   William Thomson | , Published in 1882, 122 pages
10. Algebraic K-Theory
    Olivier Isely | EPFL, Published in 2006, 45 pages
11. Derivations of Applied Mathematics
    Thaddeus H. Black | Debian Project, Published in 2017, 742 pages
12. Introduction to Algebraic Geometry
    Yuriy Drozd | , Published in 1999, 104 pages
13. Random Differential Equations in Scientific Computing
    Tobias Neckel, Florian Rupp | De Gruyter Open, Published in 2013, 650 pages
14. Combinatorial Group Theory
    Charles F. Miller III | University of Melbourne, Published in 2004, 99 pages
15. Differential Forms and Cohomology: Course
    Peter Saveliev | Intelligent Perception, Published in 2013, 300 pages
16. Topics in Geometry
    John O'Connor | University of St Andrews, Published in 2003
17. Interactive Real Analysis
    Bert G. Wachsmuth | Seton Hall University, Published in 2007
18. Linear Algebra: An Introduction to Mathematical Discourse
    | Wikibooks, Published in 2011
19. Numerical Methods with Applications
    Autar K Kaw, Egwu Eric Kalu | Lulu.com, Published in 2008, 728 pages
20. An Episodic History of Mathematics
    Steven G. Krantz | Mathematical Association of America, Published in 2006, 483 pages
21. 18 Lectures on K-Theory
    Ioannis P. Zois | arXiv, Published in 2010, 137 pages
22. Current Developments in Algebraic Geometry
    Lucia Caporaso, et al. | Cambridge University Press, Published in 2012, 438 pages
23. Linear Mathematics In Infinite Dimensions
    U. H. Gerlach | The Ohio State University, Published in 2015, 507 pages
24. Partial Differential Equations with Maple
    Robert Piche, Keijo Ruohonen | Tampere University of Technology, Published in 1997, 131 pages
25. Synthetic Differential Geometry
    Anders Kock | Cambridge University Press, Published in 2006, 241 pages
26. An Architecture for Combinator Graph Reduction
    Philip J. Koopman, Jr. | Academic Press, Published in 1990, 176 pages
27. Introduction to Algebraic Geometry
    Sudhir R. Ghorpade | Indian Institute of Technology Bombay, Published in 2007, 20 pages
28. Introduction to Probability Theory and Statistics for Linguistics
    Marcus Kracht | UCLA, Published in 2005, 137 pages
29. The Calculus
    William V. Smith | Brigham Young University, Published in 2001, 144 pages
30. Surfing on the ocean of numbers
    Henry Ibstedt | Erhus University Press, Published in 1997, 76 pages
31. Probability and Statistics for Geophysical Processes
    D. Koutsoyiannis | National Technical University of Athens, Published in 2008, 161 pages
32. The Calculus Integral
    Brian S. Thomson | ClassicalRealAnalysis.com, Published in 2010, 303 pages
33. A Course in Riemannian Geometry
    David R. Wilkins | Trinity College, Dublin, Published in 2005, 72 pages
34. 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
35. Problems in Mathematical Analysis
    B. P. Demidovich | MIR Publishers, , 511 pages
36. Noncommutative Algebraic Geometry
    Gwyn Bellamy, et al. | Cambridge University Press, Published in 2016, 360 pages
37. Functional Analysis Lecture Notes
    T.B. Ward | University of East Anglia, Published in 2001, 73 pages
38. Flavors of Geometry
    Silvio Levy | Cambridge University Press, Published in 1997, 208 pages
39. Complex Variables: Second Edition
    R. B. Ash, W. P. Novinger | Dover Publications, Published in 2007, 224 pages
40. Second-order Ordinary Differential Equations
    R.S. Johnson | Bookboon, Published in 2012, 181 pages
41. H Ring Spectra and Their Applications
    R. R. Bruner, J. P. May, J. E. McClure, M. Steinberger | Springer, Published in 1986, 400 pages
42. Elements of Algebra
    Arthur Schultze | The Macmillan Company, Published in 1917, 377 pages
43. Linear Algebra
    Benjamin McKay | University College Cork, Published in 2008, 263 pages
44. Multivariable and Vector Analysis
    W W L Chen | Macquarie University, Published in 2008, 203 pages
45. Introduction to Proof Theory
    Gilles Dowek | ESSLLI, Published in 2001, 82 pages
46. Basic Data Analysis and More: A Guided Tour Using Python
    O. Melchert | arXiv, Published in 2012, 62 pages
47. E 'Infinite' Ring Spaces and E 'Infinite' Ring Spectra
    J. P. May | Springer, Published in 1977, 280 pages
48. Foundations of Descriptive and Inferential Statistics
    Henk van Elst | arXiv, Published in 2013, 144 pages
49. Practical Mathematics for Beginners
    Frank Castle | Macmillan and co, Published in 1905, 366 pages
50. Differential Geometry Course Notes
    Richard Koch | University of Oregon, Published in 2005, 188 pages
51. Optimization Models For Decision Making
    Katta G. Murty | Springer, Published in 2010, 482 pages
52. Lectures On Unique Factorization Domains
    P. Samuel | Tata Institute Of Fundamental Research, Published in 1964, 68 pages
53. Random Graphs and Complex Networks
    Remco van der Hofstad | Eindhoven University of Technology, Published in 2010, 363 pages
54. Principles of Data Analysis
    Cappella Archive | Prasenjit Saha, Published in 2003, 113 pages
55. Elementary Theory of Numbers
    Waclaw Sierpinski | ICM, Published in 1964, 516 pages
56. An Inquiry-Based Introduction to Proofs
    Jim Hefferon | Saint Michael's College, Published in 2013, 23 pages
57. An Introduction to Noncommutative Spaces and their Geometry
    Giovanni Landi | arXiv, Published in 1997, 186 pages
58. Some Fundamental Theorems in Mathematics
    Oliver Knill | arXiv.org, Published in 2018, 133 pages
59. Probability, Random Processes, and Ergodic Properties
    Robert M. Gray | Springer, Published in 2008, 217 pages
60. Lectures on the Theory of Algebraic Functions of One Variable
    M. Deuring | Tata Institute of Fundamental Research, Published in 1959, 154 pages
61. Advanced Algebra
    Anthony W. Knapp | Birkhäuser, Published in 2016, 758 pages
62. A Mathematics Primer for Physics Graduate Students
    Andrew E. Blechman | , Published in 2007, 78 pages
63. The Solution of the Pyramid Problem
    Robert Ballard | John Wiley & Sons Ltd., Published in 1882, 109 pages
64. Differential Geometry
    Balazs Csikos | Eötvös Loránd University, Published in 2010, 123 pages
65. A Topology Primer
    Klaus Wirthmüller | Technische Universität Kaiserslautern, Published in 2002, 197 pages
66. Introduction to Partial Differential Equations
    John Douglas Moore | UCSB, Published in 2003, 169 pages
67. Abstract Algebra for Polynomial Operations
    Maya Mohsin Ahmed | , Published in 2009, 210 pages
68. Mathematics for Engineers
    William Neville Rose | Chapman, Published in 1922
69. Magic Squares and Cubes
    W. S. Andrews | Open Court Publishing Company, Published in 1917, 428 pages
70. Model-Theoretic Logics
    J. Barwise, S. Feferman | Springer, Published in 1985, 893 pages
71. Mathematical Logic
    Stephen G. Simpson | Pennsylvania State University, Published in 2013, 128 pages
72. Galois Groups and Fundamental Groups
    David Meredith | San Francisco State University, Published in 1999, 89 pages
73. Notes on Combinatorics
    Peter J. Cameron | Queen Mary, University of London, Published in 2007, 130 pages
74. Special Set Linear Algebra and Special Set Fuzzy Linear Algebra
    W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | CuArt, Published in 2009, 469 pages
75. Wave Propagation Analysis with Boundary Element Method
    Chiara Guardasoni | Ledizioni LediPublishing, Published in 2010, 130 pages
76. Languages and Machines
    C. D. H. Cooper | Macquarie University, Published in 2008
77. Street-Fighting Mathematics
    Sanjoy Mahajan | The MIT Press, Published in 2010, 153 pages
78. An Introduction to Riemannian Geometry
    Sigmundur Gudmundsson | Lund University, Published in 2010, 106 pages
79. Lectures on Expansion Techniques In Algebraic Geometry
    S.S. Abhyankar | Tata Institute Of Fundamental Research, Published in 1977, 169 pages
80. Introduction to the Galois Theory of Linear Differential Equations
    Michael F. Singer | arXiv, Published in 2008, 83 pages
81. Advances in Graph Algorithms
    Ton Kloks, Yue-Li Wang | viXra.org, Published in 2013, 178 pages
82. Tensor Trigonometry
    A.S. Ninul | FIZMATLIT, Published in 2021, 320 pages
83. Seminar on Triples and Categorical Homology Theory
    B. Eckmann | Springer, Published in 1969, 304 pages
84. Enumerative Combinatorics: Volume 1
    Richard P. Stanley | MIT, Published in 2011, 725 pages
85. Trigonometry Notes
    Steven Sy | Michigan State University, Published in 2008, 448 pages
86. Statistical Treatment of Experimental Data
    Hugh D. Young | McGraw Hill, Published in 1962
87. Think Bayes: Bayesian Statistics Made Simple
    Allen B. Downey | Green Tea Press, Published in 2012, 77 pages
88. Mathematical Methods for Physical Sciences II
    Christoph Kirsch | University of North Carolina, Published in 2011, 209 pages
89. Handbook of Mathematics for Engineers
    E. V. Huntington, L. A. Fischer | McGraw Hill, Published in 1918, 212 pages
90. Differential Equations and Linear Algebra
    Simon J.A. Malham | Heriot-Watt University, Published in 2010, 95 pages
91. CK-12 Trigonometry
    Mara Landers, Brenda Meery | CK-12 Foundation, Published in 2009, 629 pages
92. Elementary Symbolic Dynamics and Chaos in Dissipative Systems
    Bai-Lin Hao | World Scientific, Published in 1989, 475 pages
93. How We Got From There to Here: A Story of Real Analysis
    Robert Rogers, Eugene Boman | Open SUNY Textbooks, Published in 2013, 210 pages
94. An Introduction to Mathematical Logic
    Wolfram Pohlers, Thomas Glass | , Published in 1992, 229 pages
95. Toeplitz and Circulant Matrices: A review
    Robert M. Gray | Now Publishers Inc, Published in 2006, 104 pages
96. Matrix Analysis
    Steven J Cox | Rice University, Published in 2012, 98 pages
97. First Book in Arithmetic
    | W.W. Shannon, Published in 1905, 268 pages
98. Linear Algebra: Course
    Peter Saveliev | , Published in 2012, 242 pages
99. Fourier Series and Systems of Differential Equations and Eigenvalue Problems
    Leif Mejlbro | BookBoon, Published in 2007, 125 pages
100. Lie Groups, Physics, and Geometry
     Robert Gilmore | Drexel University, Published in 2007, 222 pages
101. A Minimum of Stochastics for Scientists
     Noel Corngold | Caltech, Published in 2009, 77 pages
102. Multiplication of Vectors and Structure of 3D Euclidean Space
     Miroslav Josipovic | viXra, Published in 2016, 70 pages
103. A Short Account of the History of Mathematics
     W. W. Rouse Ball | Dover Publications, Published in 1960, 466 pages
104. The Elements of Analytic Geometry
     Percey F. Smith, A. S. Gale | Ginn & company, Published in 1904, 450 pages
105. Vector Analysis Notes
     Matthew Hutton | matthewhutton.com, Published in 2006, 63 pages
106. A Problem Course in Mathematical Logic
     Stefan Bilaniuk | , Published in 2003, 166 pages
107. Calculus
     Gilbert Strang | Wellsley Cambridge Press, Published in 1991, 671 pages
108. A Tour of Triangle Geometry
     Paul Yiu | Florida Atlantic University, Published in 2005, 52 pages
109. First Steps in Numerical Analysis
     R. Hosking, S. Joe, D. Joyce, and J. Turner | , Published in 1998, 338 pages
110. Probability Theory: The Logic of Science
     E. T. Jaynes | Cambridge University Press, Published in 2002, 758 pages
111. First Year Calculus
     W W L Chen | Macquarie University, Published in 2008, 238 pages
112. Strange Attractors: Creating Patterns in Chaos
     Julien C. Sprott | M & T Books, Published in 2000, 591 pages
113. The Mathemagician and Pied Puzzler: A Collection in Tribute to Martin Gardner
     Martin Gardner, at al. | AK Peters, Published in 1999, 252 pages
114. Group theory for Maths, Physics and Chemistry
     Arjeh Cohen, Rosane Ushirobira, Jan Draisma | , Published in 2007, 93 pages
115. Category Theory: A Gentle Introduction
     Peter Smith | Logic Matters, Published in 2016, 283 pages
116. Introduction to Probability and Statistics Using R
     G. Jay Kerns | , Published in 2010, 412 pages
117. Homeomorphisms in Analysis
     Casper Goffman, at al. | American Mathematical Society, Published in 1997, 216 pages
118. H2 Mathematics Textbook
     Yan Min Choo | , Published in 2016, 1384 pages
119. Convex Bodies and Algebraic Geometry
     Tadao Oda | Springer, Published in 1988, 219 pages
120. Modern Geometry
     Robert Sharpley | University of South Carolina, Published in 2008, 230 pages
121. Think Stats: Probability and Statistics for Programmers
     Allen B. Downey | Green Tea Press, Published in 2011, 122 pages
122. Numerical Algorithms: Methods for Computer Vision, Machine Learning, and Graphics
     Justin Solomon | CRC Press, Published in 2015, 397 pages
123. Lectures on Logarithmic Algebraic Geometry
     Arthur Ogus | University of California, Berkeley, Published in 2006, 255 pages
124. A Concise Course in Algebraic Topology
     J. P. May | University Of Chicago Press, Published in 1999, 251 pages
125. From D-modules to Deformation Quantization Modules
     Pierre Schapira | UPMC, Published in 2012, 89 pages
126. Causal Inference
     Miguel A. Hernan, James M. Robins | Chapman & Hall/CRC, Published in 2015, 352 pages
127. 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
128. Algebraic Geometry
     Andreas Gathmann | University of Kaiserslautern, Published in 2014, 133 pages
129. A Friendly Introduction to Number Theory
     Joseph H. Silverman | Pearson Education, Inc., Published in 2012, 56 pages
130. Floer Homology, Gauge Theory, and Low Dimensional Topology
     David Ellwood, at al. | American Mathematical Society, Published in 2006, 314 pages
131. An Introduction to the Algebra of Quantics
     E.B. Elliott | The Clarendon Press, Published in 1913, 444 pages
132. Differential Geometry: A Geometric Introduction
     David W. Henderson | Project Euclid, Published in 2013, 250 pages
133. Combinatorial Maps: Tutorial
     Dainis Zeps | Latvian University, Published in 2007, 61 pages
134. Algebraic and Geometric Topology
     Andrew Ranicki, Norman Levitt, Frank Quinn | Springer, Published in 1985, 436 pages
135. Strings and Geometry
     M. Douglas, J. Gauntlett, M. Gross | American Mathematical Society, Published in 2004, 384 pages
136. Semi-Riemann Geometry and General Relativity
     Shlomo Sternberg | , Published in 2003, 251 pages
137. An Introduction to Contemporary Mathematics
     John Hutchinson | Australian National University, Published in 2010, 295 pages
138. Graphical Calculus
     Arthur Henry Barker | Longmans, Green, and Co., Published in 1896, 188 pages
139. Noncommutative Geometry
     Alain Connes | Academic Press, Published in 1994, 654 pages
140. Conformal Fractals: Ergodic Theory Methods
     F. Przytycki, M. Urbanski | Cambridge University Press, Published in 2009, 362 pages
141. Fundamental Numerical Methods and Data Analysis
     George W. Collins, II | NASA ADS, Published in 2003, 254 pages
142. Elementary Algebra and Calculus
     Larissa Fradkin | Bookboon, Published in 2013, 261 pages
143. Elementary Calculus: An Approach Using Infinitesimals
     H. Jerome Keisler | Bodgen & Quigley, Published in 2012, 992 pages
144. Elements of Group Theory
     F. J. Yndurain | arXiv, Published in 2007, 65 pages
145. The Algebra of Invariants
     J.H. Grace, A. Young | Cambridge, University Press, Published in 1903, 404 pages
146. An Introduction to Partial Differential Equations
     Per Kristen Jakobsen | arXiv.org, Published in 2019, 226 pages
147. Fractals
     | Wikibooks, Published in 2013
148. Basics of Algebra and Analysis For Computer Science
     Jean Gallier | , Published in 2007, 254 pages
149. Higher Algebra
     Jacob Lurie | Harvard University, Published in 2017, 1166 pages
150. Stats without Tears
     Stan Brown | BrownMath.com, Published in 2016, 243 pages
151. Probability Course
     Gian-Carlo Rota | David Ellerman, Published in 1998, 544 pages
152. Introduction to Applied Linear Algebra: Vectors, Matrices and Least Squares
     Stephen Boyd, Lieven Vandenberghe | Cambridge University Press, Published in 2018, 473 pages
153. Harmonic Function Theory
     Sheldon Axler, Paul Bourdon, Wade Ramey | Springer, Published in 2001, 270 pages
154. Bayesian Methods for Statistical Analysis
     Borek Puza | ANU Press, Published in 2015, 697 pages
155. Geometric Exercises in Paper Folding
     T. Sundara Row | The Open Court pub. co, Published in 1917, 176 pages
156. Gauge Theory for Fiber Bundles
     Peter W. Michor | Universitaet Wien, Published in 1991, 106 pages
157. Geometry for Elementary School
     | Wikibooks, Published in 2007, 72 pages
158. Algorithmic Number Theory
     J.P. Buhler, P. Stevenhagen | Cambridge University Press, Published in 2008, 662 pages
159. The Elements of Non-Euclidean Geometry
     D.M.Y. Sommerville | G.Bell & Sons Ltd., Published in 1914, 158 pages
160. Introduction to Numerical Methods and Matlab Programming for Engineers
     Todd Young, Martin J. Mohlenkamp | Ohio University, Published in 2017, 182 pages
161. Contact Geometry
     Hansjoerg Geiges | arXiv, Published in 2004, 86 pages
162. Intersection Graphs: An Introduction
     Madhumangal Pal | arXiv, Published in 2014, 49 pages
163. Introduction to Functional Analysis
     Vladimir V. Kisil | University of Leeds, Published in 2021, 166 pages
164. Applied Analysis
     I.M. Sigal, M. Merkli | University of Toronto, Published in 2001, 176 pages
165. Practical Foundations of Mathematics
     Paul Taylor | Cambridge University Press, Published in 1999, 588 pages
166. Knot Diagrammatics
     Louis H. Kauffman | arXiv, Published in 2004, 107 pages
167. Introduction to Differential Geometry and General Relativity
     Stefan Waner | , Published in 2005, 138 pages
168. A Problem-Solving Approach to College Algebra
     Marcel B. Finan | Arkansas Tech University, Published in 2002, 92 pages
169. An Elementary Treatise on Conic Sections
     Charles Smith | The Macmillan Company, Published in 1905, 378 pages
170. Geometry and Group Theory
     Christopher Pope | Texas A&M University, Published in 2008, 181 pages
171. An Infinitely Large Napkin
     Evan Chen | MIT, Published in 2016, 615 pages
172. The Geometry of Iterated Loop Spaces
     J. P. May | Springer, Published in 1972, 175 pages
173. An Introduction to Complex Algebraic Geometry
     Chris Peters | Institut Fourier Grenoble, Published in 2004, 129 pages
174. The Foundations of Geometry
     David Hilbert | Project Gutenberg, Published in 1902, 101 pages
175. Representations of Reductive p-adic Groups
     Fiona Murnaghan | University of Toronto, Published in 2009, 128 pages
176. Chebyshev and Fourier Spectral Methods
     John P. Boyd | Dover Publications, Published in 2001, 611 pages
177. Interacting Particle Systems
     Stefan Grosskinsky | University of Warwick, Published in 2009, 56 pages
178. Explaining Logarithms
     Dan Umbarger | Brown Books Publishing Group, Published in 2006, 112 pages
179. Differential and Integral Equations: Boundary Value Problems and Adjoints
     S. Schwabik, M. Tvrdy, O. Vejvoda | Academia Praha, Published in 1979, 246 pages
180. Essentials of Statistics
     David Brink | BookBoon, Published in 2008, 102 pages
181. Predicative Arithmetic
     Edward Nelson | Princeton Univ Pr, Published in 1987, 201 pages
182. Complex Geometry of Nature and General Relativity
     Giampiero Esposito | arXiv, Published in 1999, 229 pages
183. Elementary Textbook on the Calculus
     Virgil Snyder | Cornell University Library, Published in 1912, 388 pages
184. Complex Variables with Applications
     Jeremy Orloff | LibreTexts, Published in 2021, 289 pages
185. Real Functions in One Variable: Calculus 1a
     Leif Mejlbro | BookBoon, Published in 2006, 146 pages
186. Probability Theory
     Curtis T. McMullen | Harvard University, Published in 2011, 98 pages
187. Trigonometry
     Michael Corral | mecmath.net, Published in 2009, 174 pages
188. Hyperbolic Functions
     James McMahon | John Wiley & Sons, Published in 1906, 106 pages
189. Differential Calculus
     Shanti Narayan | S. Chand And Company, Published in 1962, 429 pages
190. Ordinary Differential Equations and Dynamical Systems
     Gerald Teschl | Universitaet Wien, Published in 2009, 297 pages
191. Mathematical Theory of Scattering Resonances
     Semyon Dyatlov, Maciej Zworski | MIT, Published in 2018, 640 pages
192. A Summary of Calculus
     Karl Heinz Dovermann | University of Hawaii, Published in 2003, 164 pages
193. Trigonometry for Beginners
     J. B. Lock | The MacMillan Company, Published in 1896, 236 pages
194. Mathematical Formula Handbook
     Wu-ting Tsai | National Taiwan University, Published in 2012, 28 pages
195. Applied Combinatorics
     Mitchel T. Keller, William T. Trotter | Georgia Institute of Technology, Published in 2013, 345 pages
196. Linear Algebra: Theorems and Applications
     Hassan Abid Yasser (ed.) | InTech, Published in 2012, 250 pages
197. Sam Loyd's Cyclopedia of 5000 Puzzles tricks and Conundrums
     Sam Loyd | The Lamb Publishing Company, Published in 1914, 194 pages
198. Elementary Differential Geometry
     Gilbert Weinstein | UAB, Published in 2009, 62 pages
199. An Introduction to Modular Forms
     Henri Cohen | arXiv.org, Published in 2018, 58 pages
200. Frobenius Splittings and B-Modules
     Wilberd van der Kallen | Springer, Published in 1993, 112 pages
201. Introduction to Arithmetic Groups
     Dave Witte Morris | arXiv, Published in 2015, 491 pages
202. Introductory Maths for Chemists
     J. E. Parker | Bookboon, Published in 2013, 136 pages
203. Introduction to Differential Topology
     Uwe Kaiser | Boise State University, Published in 2006, 110 pages
204. Mathematical Analysis II
     Elias Zakon | The TrilliaGroup, Published in 2009, 436 pages
205. Operator Algebras and Quantum Statistical Mechanics
     Ola Bratteli, Derek W. Robinson | Springer, Published in 2003, 505 pages
206. Elementary Linear Algebra
     Keith Matthews | University of Queensland, Published in 1998, 302 pages
207. Basic Math Quick Reference Handbook
     Peter J. Mitas | Quick Reference Handbooks, Published in 2009, 85 pages
208. First Course in the Theory of Equations
     Leonard E. Dickson | John Wiley & Sons, Published in 1922, 207 pages
209. Optimization and Dynamical Systems
     U. Helmke, J. B. Moore | Springer, Published in 1996, 414 pages
210. Orders of Infinity
     G. H. Hardy | Cambridge University Press, Published in 1910, 101 pages
211. Lectures on Siegel's Modular Functions
     H. Maass | Tata Institute of Fundamental Research, Published in 1955, 286 pages
212. Algebraic Equations
     George Ballard Mathews | Cambridge University Press, Published in 1907, 88 pages
213. Multivariable Calculus
     George Cain, James Herod | , Published in 1997
214. Category Theory Lecture Notes
     Michael Barr, Charles Wells | , Published in 1999, 133 pages
215. A Review of Algebra
     Romeyn Henry Rivenburg | American Book Company, Published in 1914, 80 pages
216. Inner Algebra
     Aaron Maxwell | Lulu.com, Published in 2005, 94 pages
217. A First Course in Linear Algebra: Study Guide for the Undergraduate Linear Algebra Course
     Mohammed Kaabar | Arxiv.org, Published in 2015, 132 pages
218. Quick Notes - Statistics
     Walter Antoniotti | 21st Century Learning Products, Published in 2001, 271 pages
219. Robust Geometric Computation
     Kurt Mehlhorn, Chee Yap | New York University, Published in 2004
220. Vector Calculus, with Applications to Physics
     James Byrnie Shaw | D. Van Nostrand company, Published in 1922, 338 pages
221. An Introduction to the Lie Theory of One-Parameter Groups
     Abraham Cohen | D.C. Heath & co, Published in 1911, 276 pages
222. Abstract Algebra I
     Marcel B. Finan | Arkansas Tech University, Published in 2004
223. Lectures on Harmonic Analysis
     Thomas Wolff | American Mathematical Society, Published in 2003, 85 pages
224. A First Course of Partial Differential Equations in Physical Sciences and Engineering
     Marcel B. Finan | Arkansas Tech University, Published in 2009, 285 pages
225. Stochastic Processes
     Leif Mejlbro | BookBoon, Published in 2012, 263 pages
226. Mathematics for Computer Science
     Eric Lehman, F Thomson Leighton, Albert R Meyer | MIT, Published in 2010, 557 pages
227. Linear Algebra
     Jim Hefferon | Saint Michael's College, Published in 2017, 507 pages
228. Everything you wanted to know about Data Analysis and Fitting
     Peter Young | arXiv, Published in 2012, 55 pages
229. Lectures in Basic Computational Numerical Analysis
     James M. McDonough | University of Kentucky, Published in 2001, 166 pages
230. Blast Into Math!
     Julie Rowlett | BookBoon, Published in 2013, 215 pages
231. Introduction to Representations of Real Semisimple Lie Groups
     Matvei Libine | arXiv, Published in 2012, 132 pages
232. Markov Chains and Stochastic Stability
     S.P. Meyn, R.L. Tweedie | Springer, Published in 2005, 567 pages
233. Functions and Their Graphs
     J. Nicholas, J. Hunter, J. Hargreaves | University of Sydney, Published in 1997, 77 pages
234. Applied Statistics
     Mohammed A. Shayib | Bookboon, Published in 2013, 300 pages
235. An Introduction to the Smarandache Function
     Charles Ashbacher | Erhus Univ Pr, Published in 1995, 62 pages
236. Manifolds of Differentiable Mappings
     Peter W. Michor | Birkhauser, Published in 1980, 165 pages
237. The Haskell Road to Logic, Maths and Programming
     Kees Doets, Jan van Eijck | College Publications, Published in 2004, 449 pages
238. Synthetic Geometry of Manifolds
     Anders Kock | University of Aarhus, Published in 2009, 314 pages
239. A First Course in Mathematics Concepts for Elementary School Teachers
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 452 pages
240. Linearization via the Lie Derivative
     Carmen Chicone, Richard Swanson | American Mathematical Society, Published in 2000, 64 pages
241. Math Puzzles
     Umesh P N | , Published in 2010, 84 pages
242. Modern Algebraic Topology
     D. G. Bourgin | Macmillan, Published in 1963, 544 pages
243. Statistics
     Philip B. Stark | University of California, Berkeley, Published in 2011
244. Intro to Abstract Algebra
     Paul Garrett | , Published in 1998, 200 pages
245. Clifford Algebra, Geometric Algebra, and Applications
     Douglas Lundholm, Lars Svensson | arXiv, Published in 2009, 117 pages
246. Almost None of the Theory of Stochastic Processes
     Cosma Rohilla Shalizi | Carnegie Mellon University, Published in 2010, 347 pages
247. Universal Algebra for Computer Science
     Eric G. Wagner | Wagner Mathematics, Published in 2006
248. Riemannian Geometry
     Richard L. Bishop | arXiv, Published in 2013, 67 pages
249. Mathematical Statistics
     Henry Lewis Rietz | Open Court Pub. Co, Published in 1927, 208 pages
250. Statistical Theory
     Ryan Martin | University of Illinois at Chicago, Published in 2015, 117 pages
251. Model Theory
     C. Ward Henson | University of South Carolina, Published in 2010, 122 pages
252. Lectures on Linear Algebra and Matrices
     G. Donald Allen | Texas A&M University, Published in 2003, 238 pages
253. Applied Mathematical Programming
     S. Bradley, A. Hax, T. Magnanti | Addison-Wesley, Published in 1977, 716 pages
254. Introduction to Probability
     C. M. Grinstead, J. L. Snell | American Mathematical Society, Published in 1997, 518 pages
255. Games of No Chance 3
     Michael H. Albert, Richard J. Nowakowski | Cambridge University Press, Published in 2009, 586 pages
256. Topology
     David Wilkins | Trinity College, Dublin, Published in 2001
257. Statistics
     | Wikibooks, Published in 2013, 236 pages
258. Topics in Discrete Mathematics
     A.F. Pixley | Harvey Mudd College, Published in 2010, 173 pages
259. Introduction to Differential Topology, de Rham Theory and Morse Theory
     Michael Muger | Radboud University, Published in 2005, 80 pages
260. Category Theory and Functional Programming
     Mikael Vejdemo-Johansson | University of St. Andrews, Published in 2012, 99 pages
261. Category Theory in Context
     Emily Riehl | Dover Publications, Published in 2016, 258 pages
262. Encyclopedia of Dynamical Systems
     D. Anosov, at al. | Scholarpedia, Published in 2009
263. Topics in Random Matrix Theory
     Terence Tao | , Published in 2011, 340 pages
264. Introduction to Evolution Equations in Geometry
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500. Lectures on Elementary Probability
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