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. Foundations of Descriptive and Inferential Statistics
   Henk van Elst | arXiv, Published in 2013, 144 pages
2. Model Theory, Algebra and Geometry
   D. Haskell, A. Pillay, C. Steinhorn | Cambridge University Press, Published in 2000, 227 pages
3. Strange Attractors: Creating Patterns in Chaos
   Julien C. Sprott | M & T Books, Published in 2000, 591 pages
4. Introduction to Probability
   Leif Mejlbro | BookBoon, Published in 2009, 61 pages
5. Lectures on Topics in Mean Periodic Functions and the Two-Radius Theorem
   J. Delsarte | Tata Institute of Fundamental Research, Published in 1961, 151 pages
6. Quantitative Analysis: Algebra with a Business Perspective
   Donna M. Wacha | Bookboon, Published in 2013, 303 pages
7. College Trigonometry
   Carl Stitz, Jeff Zeager | Stitz Zeager Open Source Mathematics, Published in 2013, 398 pages
8. First Steps in Numerical Analysis
   R. Hosking, S. Joe, D. Joyce, and J. Turner | , Published in 1998, 338 pages
9. Algebraic Topology
   Allen Hatcher | Cambridge University Press, Published in 2001, 560 pages
10. Recent Progress on the Random Conductance Model
    Marek Biskup | arXiv, Published in 2012, 80 pages
11. Transmutations and Applications: a survey
    Sergei M. Sitnik | arXiv, Published in 2010, 141 pages
12. Lecture Notes on Motivic Cohomology
    Carlo Mazza, Vladimir Voevodsky, Charles Weibel | AMS, Published in 2005, 228 pages
13. Algorithmic Graph Theory
    David Joyner, Minh Van Nguyen, Nathann Cohen | Google Code, Published in 2010, 105 pages
14. Geometric Exercises in Paper Folding
    T. Sundara Row | The Open Court pub. co, Published in 1917, 176 pages
15. Notes on Galois Theory
    Mark Reeder | Boston College, Published in 2012, 66 pages
16. Harmonic Analysis, the Trace Formula, and Shimura Varieties
    J. Arthur, D. Ellwood, R. Kottwitz | American Mathematical Society, Published in 2005, 706 pages
17. Probability
    Douglas Kennedy | Trinity College, Published in 2010, 78 pages
18. Stochastic Processes
    Leif Mejlbro | BookBoon, Published in 2012, 263 pages
19. Mathematical Theory of Scattering Resonances
    Semyon Dyatlov, Maciej Zworski | MIT, Published in 2018, 640 pages
20. Proofs and Concepts: the fundamentals of abstract mathematics
    Dave Witte Morris, Joy Morris | University of Lethbridge, Published in 2009, 220 pages
21. Calculus and Linear Algebra. Vol. 1
    Wilfred Kaplan, Donald J. Lewis | University of Michigan Library, Published in 2007, 712 pages
22. Homological Conjectures
    Tom Marley, Laura Lynch | University of Nebraska - Lincoln, Published in 2010, 56 pages
23. forall x: An Introduction to Formal Logic
    P.D. Magnus | , Published in 2008, 160 pages
24. Probability Course
    Gian-Carlo Rota | David Ellerman, Published in 1998, 544 pages
25. Banach Spaces of Analytic Functions
    enneth Hoffman | Prentice-Hall, Published in 1962, 242 pages
26. Multivariable Calculus: Applications and Theory
    Kenneth Kuttler | Brigham Young University, Published in 2011, 466 pages
27. Statistics: Methods and Applications
    Thomas Hill, Paul Lewicki | StatSoft, Inc., Published in 2005, 800 pages
28. Functional Differential Geometry
    Gerald Jay Sussman, Jack Wisdom | MIT, Published in 2005, 77 pages
29. Lectures on Symplectic Geometry
    Ana Cannas da Silva | Springer, Published in 2006, 225 pages
30. A Brief Course in the Calculus
    William Cain | D. Van Norstrand company, Published in 1905, 298 pages
31. Higher Algebra
    Jacob Lurie | Harvard University, Published in 2017, 1166 pages
32. Analytical Geometry for Beginners
    Alfred Baker | W. J. Gage, Published in 1905, 234 pages
33. Analysis Tools with Applications
    Bruce K. Driver | Springer, Published in 2003, 790 pages
34. Introduction to Fortran 95 and Numerical Computing
    Adrian Sandu | Virginia Tech, Published in 2001, 215 pages
35. An Introduction to Contemporary Mathematics
    John Hutchinson | Australian National University, Published in 2010, 295 pages
36. Tea Time Numerical Analysis
    Leon Q. Brin | Southern Connecticut State University, Published in 2014, 278 pages
37. Mathematical Computation
    Ian Craw | University of Aberdeen, Published in 2003, 156 pages
38. Lecture Notes on Differentiable Manifolds
    Jie Wu | National University of Singapore, Published in 2004, 78 pages
39. Elements of Plane Trigonometry
    Hugh Blackburn | Macmillan and co, Published in 1871, 143 pages
40. Invitation to Dynamical Systems
    Edward R. Scheinerman | Prentice Hall College Div, Published in 2000, 384 pages
41. Functional and Structured Tensor Analysis for Engineers
    R. M. Brannon | The University of Utah, Published in 2003, 323 pages
42. Algebraic and Geometric Topology
    Andrew Ranicki, Norman Levitt, Frank Quinn | Springer, Published in 1985, 436 pages
43. Encyclopedia of Dynamical Systems
    D. Anosov, at al. | Scholarpedia, Published in 2009
44. Non-Uniform Random Variate Generation
    Luc Devroye | Springer, Published in 1986, 843 pages
45. The Theory of Matrices
    C.C. MacDuffee | Chelsea, Published in 1956, 110 pages
46. Advanced Data Analysis from an Elementary Point of View
    Cosma Rohilla Shalizi | Cambridge University Press, Published in 2013, 586 pages
47. Statistics Done Wrong
    Alex Reinhart | refsmmat.com, Published in 2013, 437 pages
48. On Riemann's Theory of Algebraic Functions and their Integrals
    Felix Klein | Macmillan and Bowes, Published in 1893, 128 pages
49. Transformations of Surfaces
    Luther Pfahler Eisenhart | Princeton University Press, Published in 1923, 371 pages
50. Practical Mathematics for Home Study
    Claude Irwin Palmer | McGraw-Hill, Published in 1919, 528 pages
51. An Introduction to Determinants
    William Thomson | , Published in 1882, 122 pages
52. Lectures on Lipschitz Analysis
    Juha Heinonen | , Published in 2005, 77 pages
53. Notes on Algebraic Structures
    Peter J. Cameron | Queen Mary, University of London, Published in 2006, 102 pages
54. The Adams-Novikov Spectral Sequence and the Homotopy Groups of Spheres
    Paul Goerss | Northwestern University, Published in 2007, 47 pages
55. Statistics
    | Wikibooks, Published in 2013, 236 pages
56. Lectures on Elementary Probability
    William G. Faris | University of Arizona, Published in 2002, 62 pages
57. Algebra Study Guide
    John Redden | , Published in 2012, 211 pages
58. Logic For Everyone
    Robert A. Herrmann | , Published in 2006, 124 pages
59. Quadratic Forms and Their Applications
    Andrew Ranicki, et al. | American Mathematical Society, Published in 2000, 314 pages
60. A Primer of Commutative Algebra
    J.S. Milne | , Published in 2011, 75 pages
61. Geometric Complexity Theory: An Introduction for Geometers
    J.M. Landsberg | arXiv, Published in 2013, 38 pages
62. On Advanced Analytic Number Theory
    C.L. Siegel | Tata Institute of Fundamental Research, Published in 1961, 241 pages
63. Causal Inference
    Miguel A. Hernan, James M. Robins | Chapman & Hall/CRC, Published in 2015, 352 pages
64. Langlands Correspondence for Loop Groups
    Edward Frenkel | Cambridge University Press, Published in 2007, 393 pages
65. Lectures on Stochastic Flows and Applications
    H. Kunita | Tata Institute Of Fundamental Research, Published in 1986, 130 pages
66. Euclid and His Twentieth Century Rivals
    Nathaniel Miller | , Published in 2007, 124 pages
67. Geometry Unbound
    Kiran S. Kedlaya | , Published in 2006, 142 pages
68. Real Analysis
    Martin Smith-Martinez, et al. | Wikibooks, Published in 2013
69. 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
70. Linear Algebra
    Jonathan Gleason | University of California, Published in 2018, 681 pages
71. 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
72. Theory of Functions of a Complex Variable
    Andrew Russell Forsyth | Cambridge University Press, Published in 1918, 892 pages
73. A Course Of Differential Geometry
    John Edward Campbell | Clarendon Press, Published in 1926, 288 pages
74. Notes on Differential Geometry
    Noel J. Hicks | Van Nostrand, Published in 1965, 183 pages
75. Elements of Analytical Geometry of Two Dimensions
    M. Briot, M. Bouquet | Werner school book company, Published in 1896, 602 pages
76. Geometric Wave Equations
    Stefan Waldmann | arXiv, Published in 2012, 279 pages
77. Preparing for College Physics
    David Murdock | TTU, Published in 2002, 64 pages
78. Lie Groups, Physics, and Geometry
    Robert Gilmore | Drexel University, Published in 2007, 222 pages
79. A Short Course on Approximation Theory
    N. L. Carothers | Bowling Green State University, Published in 2009, 159 pages
80. Partial Differential Equations with Maple
    Robert Piche, Keijo Ruohonen | Tampere University of Technology, Published in 1997, 131 pages
81. Discrete Structures
    Vladlen Koltun | Stanford University, Published in 2008, 89 pages
82. Mathematics and Music
    David Wright | Washington University in St. Louis, Published in 2009, 176 pages
83. Fractional Dynamics
    Carlo Cattani, et al. | De Gruyter Open Ltd, Published in 2016, 408 pages
84. Differential Topology of Fiber Bundles
    Karl-Hermann Neeb | FAU Erlangen-Nuernberg, Published in 2010, 146 pages
85. Extremes and Recurrence in Dynamical Systems
    Valerio Lucarini, et al. | arXiv, Published in 2016, 305 pages
86. The Geometry of Iterated Loop Spaces
    J. P. May | Springer, Published in 1972, 175 pages
87. Very Basic Noncommutative Geometry
    Masoud Khalkhali | University of Western Ontario, Published in 2004, 104 pages
88. The Design of Approximation Algorithms
    D. P. Williamson, D. B. Shmoys | Cambridge University Press, Published in 2010, 496 pages
89. Plane Trigonometry and Numerical Computation
    J.W. Young, F.M. Morgan | The Macmillan Company, Published in 1919, 146 pages
90. Graduate Algebra
    Leonard Evens | Northwestern University, Published in 1999, 160 pages
91. Geometric Theorems and Arithmetic Functions
    Jozsef Sandor | American Research Press, Published in 2002, 55 pages
92. Around the Boundary of Complex Dynamics
    Roland K. W. Roeder | arXiv, Published in 2015, 56 pages
93. 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
94. Logic for Computer Science
    | Wikibooks, Published in 2010
95. Geometry: From Ancient to Modern
    Wong Yan Loi | National University of Singapore, Published in 1999, 52 pages
96. 18 Lectures on K-Theory
    Ioannis P. Zois | arXiv, Published in 2010, 137 pages
97. Beyond partial differential equations: A course on linear and quasi-linear abstract hyperbolic evolution equations
    Horst R. Beyer | arXiv, Published in 2011, 275 pages
98. Foundations in Statistical Reasoning
    Pete Kaslik | , Published in 2018, 310 pages
99. Notes on the course Algebraic Topology
    Boris Botvinnik | University of Oregon, Published in 2010, 181 pages
100. Introduction to Algebraic Topology and Algebraic Geometry
     U. Bruzzo | , Published in 2008, 138 pages
101. Mirror Symmetry
     Cumrun Vafa, Eric Zaslow | American Mathematical Society, Published in 2003, 950 pages
102. Projective Differential Geometry Old and New
     V. Ovsienko, S. Tabachnikov | Cambridge University Press, Published in 2004, 281 pages
103. Lie Groups in Physics
     G. 't Hooft, M. J. G. Veltman | Utrecht University, Published in 2007, 75 pages
104. Ten British Mathematicians
     Alexander Macfarlane | , Published in 1916, 108 pages
105. Noncommutative Algebraic Geometry
     Gwyn Bellamy, et al. | Cambridge University Press, Published in 2016, 360 pages
106. Convex Geometric Analysis
     Keith Ball, Vitali Milman | Cambridge University Press, Published in 1998, 236 pages
107. Ample Subvarieties of Algebraic Varieties
     Robin Hartshorne | Springer, Published in 1970, 273 pages
108. High-dimensional Knot Theory
     Andrew Ranicki | Springer, Published in 1998, 693 pages
109. Residues and Duality
     Robin Hartshorne | Springer, Published in 1966, 434 pages
110. Think Bayes: Bayesian Statistics Made Simple
     Allen B. Downey | Green Tea Press, Published in 2012, 77 pages
111. Dynamical Systems
     Shlomo Sternberg | OER Commons, Published in 2000, 151 pages
112. Axiomatic Set Theory
     Michael Meyling | , Published in 2011, 36 pages
113. Topics in the Theory of Quadratic Residues
     Steve Wright | arXiv, Published in 2014, 160 pages
114. Introduction to Linear Bialgebra
     W.B.V. Kandasamy, F. Smarandache, K. Ilanthenral | arXiv, Published in 2005, 238 pages
115. Linear Methods of Applied Mathematics
     Evans M. Harrell II, James V. Herod | , Published in 2000
116. One Variable Advanced Calculus
     Kenneth Kuttler | Brigham Young University, Published in 2020, 394 pages
117. 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
118. Everything you wanted to know about Data Analysis and Fitting
     Peter Young | arXiv, Published in 2012, 55 pages
119. Precalculus: An Investigation of Functions
     David Lippman, Melonie Rasmussen | Lulu.com, Published in 2011, 568 pages
120. Lectures On Old And New Results On Algebraic Curves
     P. Samuel | Tata Institute Of Fundamental Research, Published in 1966, 99 pages
121. General Topology
     Jesper M. Moller | , Published in 2010, 75 pages
122. Riemannian Submanifolds: A Survey
     Bang-Yen Chen | arXiv, Published in 2013, 272 pages
123. Exterior Differential Systems
     Robert L. Bryant, et al. | MSRI, Published in 1991, 406 pages
124. Lectures on Linear Algebra and Matrices
     G. Donald Allen | Texas A&M University, Published in 2003, 238 pages
125. Finite Group Schemes
     Richard Pink | ETH Zurich, Published in 2005, 78 pages
126. An Elementary Illustrated Introduction to Simplicial Sets
     Greg Friedman | arXiv.org, Published in 2016, 58 pages
127. Geometry of Surfaces
     Nigel Hitchin | , Published in 2013, 101 pages
128. Temporal Networks
     Petter Holme, Jari Saramäki | arXiv, Published in 2011, 25 pages
129. Sets, Groups and Knots
     Curtis T. McMullen | Harvard University, Published in 2008, 56 pages
130. The Mathematics of Investment
     William L.Hart | D.C Heath and Company, Published in 1924, 321 pages
131. Counting Rocks! An Introduction to Combinatorics
     Henry Adams, et al. | arXiv.org, Published in 2021, 220 pages
132. Toeplitz and Circulant Matrices: A review
     Robert M. Gray | Now Publishers Inc, Published in 2006, 104 pages
133. Popular Mathematics
     Robert Mudie | Orr and Smith, Published in 1836, 523 pages
134. Statistics Beyond the Absolute Basics
     Ivan Lowe | scientificlanguage.com, Published in 2018, 182 pages
135. Linear Algebra: An Introduction to Mathematical Discourse
     | Wikibooks, Published in 2011
136. Elementary Number Theory
     William Edwin Clark | University of South Florida, Published in 2002, 129 pages
137. Lectures on Differential Geometry
     Wulf Rossmann | University of Ottawa, Published in 2003, 221 pages
138. Analytic Geometry and Principles of Algebra
     A. Ziwet, L.A. Hopkins, E.R. Hedrick | The Macmillan Company, Published in 1913, 398 pages
139. Optimization and Dynamical Systems
     U. Helmke, J. B. Moore | Springer, Published in 1996, 414 pages
140. Geometric Topology: Localization, Periodicity and Galois Symmetry
     Dennis Sullivan | Springer, Published in 2005, 296 pages
141. Advanced High-School Mathematics
     David B. Surowski | Kansas State University, Published in 2011, 435 pages
142. Parallel Spectral Numerical Methods
     Gong Chen, et al. | Wikibooks, Published in 2013
143. Intro to Abstract Algebra
     Paul Garrett | , Published in 1998, 200 pages
144. Introduction to Shimura Varieties
     J.S. Milne | , Published in 2004, 149 pages
145. Hopf Algebras, Quantum Groups and Yang-Baxter Equations
     Florin Felix Nichita (ed.) | MDPI AG, Published in 2019, 240 pages
146. Random Matrix Theory, Interacting Particle Systems and Integrable Systems
     Percy Deift, Peter Forrester (eds) | Cambridge University Press, Published in 2014, 528 pages
147. Linear Algebra
     Peter Petersen | UCLA, Published in 2007, 300 pages
148. Mathematics for Technical Schools
     J.M. Warren, W.H. Rutherford | Copp, Clark, Published in 1921, 356 pages
149. An Elementary Treatise on Conic Sections
     Charles Smith | The Macmillan Company, Published in 1905, 378 pages
150. Irrational Numbers and Their Representation by Sequences and Series
     Henry Parker Manning | J. Wiley & sons, Published in 1906, 156 pages
151. Curves and Surfaces in Geometric Modeling: Theory and Algorithms
     Jean Gallier | Morgan Kaufmann, Published in 1999, 502 pages
152. Linear Partial Differential Equations and Fourier Theory
     Marcus Pivato | Cambridge University Press, Published in 2005, 619 pages
153. Hyperbolic Functions
     James McMahon | John Wiley & Sons, Published in 1906, 106 pages
154. Theory of the Integral
     Brian S. Thomson | ClassicalRealAnalysis.info, Published in 2012, 407 pages
155. Group theory for Maths, Physics and Chemistry
     Arjeh Cohen, Rosane Ushirobira, Jan Draisma | , Published in 2007, 93 pages
156. Topics in Geometry
     John O'Connor | University of St Andrews, Published in 2003
157. Lectures on Modular Functions of One Complex Variable
     H. Maass | Tata institute of Fundamental Research, Published in 1983, 242 pages
158. Lectures on Numerical Methods in Bifurcation Problems
     H.B. Keller | Tata Institute Of Fundamental Research, Published in 1986, 140 pages
159. Lectures on Holomorphic Curves in Symplectic and Contact Geometry
     Chris Wendl | arXiv, Published in 2010, 153 pages
160. A Friendly Introduction to Mathematical Logic
     Christopher C. Leary, Lars Kristiansen | Milne Library Publishing, Published in 2015, 380 pages
161. Calculus III
     Paul Dawkins | Lamar University, Published in 2011, 287 pages
162. Origami and Geometric Constructions
     Robert J. Lang | , Published in 2003, 55 pages
163. Lectures on Numerical Methods for Non-Linear Variational Problems
     R. Glowinski | Tata Institute of Fundamental Research, Published in 1980, 265 pages
164. Mathematics and Physical Science in Classical Antiquity
     J. L. Heiberg | Oxford University Press, Published in 1922, 115 pages
165. Manifolds and Differential Forms
     Reyer Sjamaar | Cornell University, Published in 2017, 171 pages
166. Introduction to Arithmetic Groups
     Dave Witte Morris | arXiv, Published in 2015, 491 pages
167. Symplectic Geometry of Quantum Noise
     Leonid Polterovich | arXiv, Published in 2012, 57 pages
168. Lecture Notes in Discrete Mathematics
     Marcel B. Finan | Arkansas Tech University, Published in 2001, 224 pages
169. The Radon Transform
     Sigurdur Helgason | Birkhauser Boston, Published in 1999, 196 pages
170. Spherical Trigonometry
     I. Todhunter | Macmillan and co, Published in 1886, 189 pages
171. Yet Another Calculus Text
     Dan Sloughter | , Published in 2007, 147 pages
172. Quick Notes - Statistics
     Walter Antoniotti | 21st Century Learning Products, Published in 2001, 271 pages
173. Practical Mathematics
     A.H. Bell | Blackie And Son Limited, Published in 1919, 356 pages
174. Smarandache Semigroups
     W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 95 pages
175. Vector Analysis Notes
     Matthew Hutton | matthewhutton.com, Published in 2006, 63 pages
176. Non-Euclidean Geometry: A Critical and Historical Study of its Development
     Roberto Bonola | Open Court Publishing Company, Published in 1912, 292 pages
177. Mixed Motives
     Marc Levine | American Mathematical Society, Published in 1998, 91 pages
178. Notes on Differential Equations
     Bob Terrell | , Published in 2005, 99 pages
179. Partial Differential Equations
     Erich Miersemann | Leipzig University, Published in 2012, 205 pages
180. Foundations of geometry for university students and high-school students
     Ruslan Sharipov | arXiv, Published in 2007, 221 pages
181. Geometry of 2D Topological Field Theories
     Boris Dubrovin | arXiv, Published in 1994, 204 pages
182. Compiled and Solved Problems in Geometry and Trigonometry
     Florentin Smarandache | viXra.org, Published in 2015, 221 pages
183. Nonlinear Functional Analysis
     Gerald Teschl | University of Vienna, Published in 2009, 74 pages
184. Language, Proof and Logic
     Jon Barwise, John Etchemendy | Center for the Study of Language, Published in 2011, 620 pages
185. Introduction to Infinitesimal Analysis: Functions of One Real Variable
     N. J. Lennes | John Wiley & Sons, Published in 1907, 225 pages
186. Introductory Maths for Chemists
     J. E. Parker | Bookboon, Published in 2013, 136 pages
187. A Short History of Greek Mathematics
     James Gow | Cambridge University Press, Published in 1884, 351 pages
188. Introduction to Matrix Algebra
     Autar K Kaw | University of South Florida, Published in 2002, 192 pages
189. Trigonometry Notes
     Steven Sy | Michigan State University, Published in 2008, 448 pages
190. Advanced Calculus and Analysis
     Ian Craw | University of Aberdeen, Published in 2000, 110 pages
191. Finite Rank Torsion Free Modules Over Dedekind Domains
     E. Lee Lady | University of Hawaii, Published in 1998
192. Four-manifolds, Geometries and Knots
     Jonathan Hillman | arXiv, Published in 2009, 396 pages
193. Mathematics for Computer Scientists
     Gareth J. Janacek, Mark L. Close | BookBoon, Published in 2008, 153 pages
194. Elementary Mathematics
     W W L Chen, X T Duong | Macquarie University, Published in 1999, 308 pages
195. Matrix Analysis and Algorithms
     Andrew Stuart, Jochen Voss | CaltechAUTHORS, Published in 2009, 108 pages
196. Algebra for Beginners
     James Loudon | Copp, Clark & Co, Published in 1876, 172 pages
197. Reversibility and Stochastic Networks
     F.P. Kelly | John Wiley and Sons Ltd, Published in 1979, 233 pages
198. Convex Optimization
     Stephen Boyd, Lieven Vandenberghe | Cambridge University Press, Published in 2004, 730 pages
199. Tilings and Patterns
     E O Harriss | Mathematicians.org.uk, Published in 2008, 43 pages
200. Linear Algebra C-4: Quadratic equations in two or three variables
     Leif Mejlbro | BookBoon, Published in 2009, 74 pages
201. The Geometry of Vector Calculus
     Tevian Dray, Corinne A. Manogue | Oregon State University, Published in 2012, 325 pages
202. Mathematical Biology
     Jeffrey R. Chasnov | The Hong Kong University of Science & Technology, Published in 2010, 115 pages
203. Notes on Category Theory with examples from basic mathematics
     Paolo Perrone | arXiv, Published in 2021, 181 pages
204. Probabilistic Programming and Bayesian Methods for Hackers
     Cameron Davidson-Pilon | GitHub, Inc., Published in 2013
205. Everything Maths: Grade 12 Mathematics
     Neels van der Westhuizen, et al. | Siyavula, Published in 2012, 199 pages
206. Lies, Damned Lies, or Statistics: How to Tell the Truth with Statistics
     Jonathan A. Poritz | Colorado State University, Pueblo, Published in 2017, 143 pages
207. Probability Theory and Stochastic Processes with Applications
     Oliver Knill | Overseas Press, Published in 2009, 382 pages
208. Homogeneous Spaces and Equivariant Embeddings
     Dmitri A. Timashev | arXiv, Published in 2006, 250 pages
209. An Introduction to Complex Algebraic Geometry
     Chris Peters | Institut Fourier Grenoble, Published in 2004, 129 pages
210. Inside Out: Inverse Problems and Applications
     Gunther Uhlmann | Cambridge University Press, Published in 2003, 400 pages
211. Geometry Formulas and Facts
     Silvio Levy | CRC Press, Published in 1995
212. A Second Course in Elementary Ordinary Differential Equations
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 201 pages
213. Lectures on Field Theory and Ramification Theory
     Sudhir R. Ghorpade | Indian Institute of Technology, Bombay, Published in 2008, 36 pages
214. A Course of Pure Geometry: Properties of the Conic Sections
     E.H. Askwith | Cambridge University Press, Published in 1917, 314 pages
215. Ordinary Differential Equations: A Systems Approach
     Bruce P. Conrad | , Published in 2010, 1125 pages
216. The Octonions
     John C. Baez | University of California, Published in 2001, 56 pages
217. Topics in Logic and Foundations
     Stephen G. Simpson | The Pennsylvania State University, Published in 2005, 89 pages
218. The Calculus of Functions of Several Variables
     Dan Sloughter | Furman University, Published in 2001, 260 pages
219. Surgical Methods in Rigidity
     F.T. Farrell | Springer, Published in 1996, 108 pages
220. Circulants
     Alun Wyn-jones | , Published in 2008, 149 pages
221. Theory and Applications of Finite Groups
     G. A. Miller, H. F. Blichfeldt, L. E. Dickson | J. Wiley, Published in 1916, 424 pages
222. Differential Calculus
     Shanti Narayan | S. Chand And Company, Published in 1962, 429 pages
223. Immersive Linear Algebra
     J. Strom, K. Astrom, T. Akenine-Moller | immersivemath, Published in 2017, 205 pages
224. A Gentle Introduction to the Art of Mathematics
     Joseph Fields | Southern Connecticut State University, Published in 2009, 428 pages
225. Elementary Number Theory
     W W L Chen | Macquarie University, Published in 2003, 98 pages
226. A Brief History of Mathematics
     Karl Fink | Open Court Publishing Company, Published in 1900, 366 pages
227. Hyperbolic Geometry
     J.W. Cannon, W.J. Floyd, R. Kenyon, W.R. Parry | MSRI, Published in 1997, 57 pages
228. An Introduction to Group Theory: Applications to Mathematical Music Theory
     Flor Aceff-Sanchez, et al. | BookBoon, Published in 2013, 165 pages
229. Basic Real Analysis
     Anthony W. Knapp | Birkhäuser, Published in 2016, 840 pages
230. Encyclopedia of Mathematics
     | Kluwer Academic Publishers, Published in 2002, 1202 pages
231. Voting, Arbitration & Fair Division: Mathematics of Social Choice
     Marcus Pivato | Trent University, Published in 2007, 181 pages
232. The Calculus Of Finite Differences
     L. M. Milne Thomson | Macmillan and co, Published in 1933, 590 pages
233. Analysis of Puzzles
     Umesh Nair | , Published in 2006, 88 pages
234. Algebraic Methods
     F. Oggier | Nanyang Technological University, Published in 2011, 199 pages
235. Theory of Statistics
     James E. Gentle | George Mason University, Published in 2012, 900 pages
236. Geometry of the Quintic
     Jerry Shurman | Wiley-Interscience, Published in 1997, 208 pages
237. Lectures on Discrete and Polyhedral Geometry
     Igor Pak | UCLA, Published in 2008, 428 pages
238. Primary Mathematics
     | Wikibooks, Published in 2012
239. Integrate Your Brain: How To Do Calculus In Your Head
     Aaron Maxwell | Lulu.com, Published in 2006, 51 pages
240. The Foundations of Analysis
     Larry Clifton | arXiv, Published in 2013, 48 pages
241. Geometric Models for Noncommutative Algebra
     Ana Cannas da Silva, Alan Weinstein | University of California at Berkeley, Published in 1998, 194 pages
242. College Algebra
     Richard Beveridge | , Published in 2018, 198 pages
243. Exterior Differential Systems and Euler-Lagrange Partial Differential Equations
     R. Bryant, P. Griffiths, D. Grossman | University Of Chicago Press, Published in 2008, 219 pages
244. Lectures on Polyhedral Topology
     John R. Stallings | Tata Institute of Fundamental Research, Published in 1967, 214 pages
245. Algebraic Curves: an Introduction to Algebraic Geometry
     William Fulton | Benjamin, Published in 1969, 129 pages
246. An Introduction to Tensors for Students of Physics and Engineering
     Joseph C. Kolecki | Glenn Research Center, Published in 2002, 29 pages
247. Introductory Statistics: Concepts, Models, and Applications
     David W. Stockburger | Missouri State University, Published in 1996, 487 pages
248. Mathematics and Physics of Emerging Biomedical Imaging
     National Research Council | National Academies Press, Published in 1996, 238 pages
249. The Calculus for Engineers
     John Perry | E. Arnold, Published in 1897, 408 pages
250. Introduction to Methods of Applied Mathematics
     Sean Mauch | Caltech, Published in 2004, 2321 pages
251. Lectures on the Geometry of Manifolds
     Liviu I. Nicolaescu | World Scientific Publishing Company, Published in 2009, 570 pages
252. Practical Foundations of Mathematics
     Paul Taylor | Cambridge University Press, Published in 1999, 588 pages
253. Vector Math for 3D Computer Graphics
     Bradley Kjell | Central Connecticut State University, Published in 2003
254. Complex Geometry of Nature and General Relativity
     Giampiero Esposito | arXiv, Published in 1999, 229 pages
255. Brief Calculus
     Benjamin Crowell | , Published in 2015, 207 pages
256. Stability Analysis via Matrix Functions Method
     A. A. Martynyuk | Bookboon, Published in 2013, 257 pages
257. Differential Geometry: A Geometric Introduction
     David W. Henderson | Project Euclid, Published in 2013, 250 pages
258. Design, Evaluation and Analysis of Combinatorial Optimization Heuristic Algorithms
     Daniel Karapetyan | arXiv, Published in 2012, 202 pages
259. An Elementary Introduction to Groups and Representations
     Brian C. Hall | arXiv, Published in 2000, 128 pages
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