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. Higher Geometry: an introduction to advanced methods in analytic geometry
   Frederick S. Woods | Ginn & Co., Published in 1922, 450 pages
2. A Geometric Approach to Differential Forms
   David Bachman | arXiv, Published in 2003, 106 pages
3. Multivariable Calculus: Applications and Theory
   Kenneth Kuttler | Brigham Young University, Published in 2011, 466 pages
4. Convex Optimization: Algorithms and Complexity
   Sebastien Bubeck | arXiv.org, Published in 2015, 130 pages
5. Symmetry Measures on Complex Networks
   Angel Garrido (ed.) | MDPI AG, Published in 2017, 510 pages
6. Mathematical Methods for Physical Sciences II
   Christoph Kirsch | University of North Carolina, Published in 2011, 209 pages
7. A First Course In Mathematical Statistics
   C.E. Weatherburn | Cambridge University Press, Published in 1961, 302 pages
8. Multivariable Calculus
   Wong Yan Loi | National University of Singapore, Published in 2013, 105 pages
9. Nonlinear Partial Differential Equations of Elliptic Type
   Vicentiu Radulescu | arXiv, Published in 2005, 114 pages
10. Differential Geometry in Physics
    Gabriel Lugo | University of North Carolina at Wilmington, Published in 2006, 61 pages
11. Fourier Series and Systems of Differential Equations and Eigenvalue Problems
    Leif Mejlbro | BookBoon, Published in 2007, 125 pages
12. Algebraic Invariants
    Leonard E. Dickson | J. Wiley & Sons, Published in 1914, 122 pages
13. Linear Algebra: An Introduction to Mathematical Discourse
    | Wikibooks, Published in 2011
14. Theory and Applications of Finite Groups
    G. A. Miller, H. F. Blichfeldt, L. E. Dickson | J. Wiley, Published in 1916, 424 pages
15. Art Gallery Theorems and Algorithms
    Joseph O'Rourke | Oxford University Press, Published in 1987, 296 pages
16. Introductory Statistics Notes
    Jamie DeCoster | University of Alabama, Published in 1998, 48 pages
17. Geometric Complexity Theory: An Introduction for Geometers
    J.M. Landsberg | arXiv, Published in 2013, 38 pages
18. Statistics
    | Wikibooks, Published in 2013, 236 pages
19. Introduction to Statistical Thought
    Michael Lavine | , Published in 2008, 434 pages
20. Modular Functions and Modular Forms
    J. S. Milne | , Published in 2009, 129 pages
21. Around the Boundary of Complex Dynamics
    Roland K. W. Roeder | arXiv, Published in 2015, 56 pages
22. Congruence Lattices of Finite Algebras
    William DeMeo | arXiv, Published in 2012, 130 pages
23. Lectures on Complex Analytic Manifolds
    L. Schwartz | Tata Institute of Fundamental Research, Published in 1955, 163 pages
24. Examples of differential equations, with rules for their solution
    George A. Osborne | Boston, Ginn & Company, Published in 1899, 76 pages
25. Second-order Ordinary Differential Equations
    R.S. Johnson | Bookboon, Published in 2012, 181 pages
26. Algebraic and Geometric Topology
    Andrew Ranicki, Norman Levitt, Frank Quinn | Springer, Published in 1985, 436 pages
27. Plane and Spherical Trigonometry
    Elmer A. Lyman, Edwin C. Goddard | Allyn and Bacon, Published in 1900, 157 pages
28. Lectures on Topics in Stochastic Differential Equations
    Daniel W. Stroock | Tata Institute of Fundamental Research, Published in 1982, 93 pages
29. An Elementary Illustrated Introduction to Simplicial Sets
    Greg Friedman | arXiv.org, Published in 2016, 58 pages
30. Lectures on Commutative Algebra
    Sudhir R. Ghorpade | Indian Institute of Technology, Bombay, Published in 2006, 64 pages
31. Numerical Methods for Large Eigenvalue Problems
    Yousef Saad | SIAM, Published in 2011, 285 pages
32. Analysis Tools with Applications
    Bruce K. Driver | Springer, Published in 2003, 790 pages
33. Chaos Theory
    Kais A. Mohamedamen Al Naimee (ed.) | InTech, Published in 2018, 260 pages
34. Group Theory: Birdtracks, Lie's, and Exceptional Groups
    Predrag Cvitanovic | Princeton University Press, Published in 2011, 289 pages
35. Sam Loyd's Cyclopedia of 5000 Puzzles tricks and Conundrums
    Sam Loyd | The Lamb Publishing Company, Published in 1914, 194 pages
36. Principles of Uncertainty
    Joseph B. Kadane | Chapman and Hall/CRC, Published in 2011, 499 pages
37. Groups and Semigroups: Connections and Contrasts
    John Meakin | University of Nebraska-Lincoln, Published in 2005, 40 pages
38. Lectures on Discrete Subgroups of Lie Groups
    G.D. Mostow | Tata Institute of Fundamental Research, Published in 1969, 86 pages
39. 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
40. Elementary Topology
    O. Ya. Viro, O. A. Ivanov, N. Yu. Netsvetaev, V. M. Kharlamov | American Mathematical Society, Published in 2008, 400 pages
41. Group Theory
    J. S. Milne | , Published in 2009, 127 pages
42. Commutative Algebra
    Keerthi Madapusi | Harvard University, Published in 2007, 177 pages
43. Mathematical Principles of Dynamic Systems and the Foundations of Quantum Physics
    Eric Tesse | arXiv, Published in 2012, 88 pages
44. Theory of Groups of Finite Order
    William Burnside | Cambridge University Press, Published in 1897, 456 pages
45. Applied Mathematics by Example
    Jeremy Pickles | BookBoon, Published in 2010, 164 pages
46. H2 Mathematics Textbook
    Yan Min Choo | , Published in 2016, 1384 pages
47. Essential Mathematics
    Franco Vivaldi | , Published in 2006, 74 pages
48. Several Complex Variables
    Michael Schneider, Yum-Tong Siu | Cambridge University Press, Published in 1999, 564 pages
49. Computer Algebra, Algorithms, Systems and Applications
    Richard Liska, at al. | Czech Technical University, Published in 1996
50. Groupoids and Smarandache Groupoids
    W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 115 pages
51. Think Bayes: Bayesian Statistics Made Simple
    Allen B. Downey | Green Tea Press, Published in 2012, 77 pages
52. Complex Integration and Cauchy's Theorem
    G. N. Watson | Cambridge University Press, Published in 1914, 100 pages
53. Elementary Theory of Numbers
    Waclaw Sierpinski | ICM, Published in 1964, 516 pages
54. Counting Rocks! An Introduction to Combinatorics
    Henry Adams, et al. | arXiv.org, Published in 2021, 220 pages
55. Mathematics for the Physical Sciences
    Leslie Copley | De Gruyter Open, Published in 2014, 446 pages
56. Introduction to Projective Varieties
    Enrique Arrondo | Universidad Complutense de Madrid, Published in 2007, 142 pages
57. Elementary Real Analysis
    B. S. Thomson, J. B. Bruckner, A. M. Bruckner | Prentice Hall, Published in 2001, 735 pages
58. Advanced Topics in Probability
    S.R.S. Varadhan | New York University, Published in 2011, 203 pages
59. scl
    Danny Calegari | Mathematical Society of Japan, Published in 2009, 218 pages
60. Parallel Spectral Numerical Methods
    Gong Chen, et al. | Wikibooks, Published in 2013
61. Workbook in Higher Algebra
    David Surowski | , Published in 1992, 194 pages
62. An Algorithm for Constructing Lyapunov Functions
    Sigurdur Freyr Hafstein | , Published in 2007, 100 pages
63. Understanding Algebra
    James W. Brennan | , Published in 2011, 106 pages
64. Smarandache Rings
    W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 222 pages
65. Random Matrix Models and Their Applications
    Pavel Bleher, Alexander Its | Cambridge University Press, Published in 2001, 438 pages
66. Contact Geometry
    Hansjoerg Geiges | arXiv, Published in 2004, 86 pages
67. Lectures on Siegel's Modular Functions
    H. Maass | Tata Institute of Fundamental Research, Published in 1955, 286 pages
68. Harmonic Analysis
    S.R.S. Varadhan | New York University, Published in 2019, 82 pages
69. Synthetic Geometry of Manifolds
    Anders Kock | University of Aarhus, Published in 2009, 314 pages
70. An Introductory Course Of Mathematical Analysis
    Charles Walmsley | Cambridge University Press, Published in 1920, 268 pages
71. Topology Illustrated
    Peter Saveliev | Intelligent Perception, Published in 2014, 301 pages
72. 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
73. Commutative Algebra
    Jacob Lurie, Akhil Mathew | Harvard University, Published in 2010, 172 pages
74. Langlands Correspondence for Loop Groups
    Edward Frenkel | Cambridge University Press, Published in 2007, 393 pages
75. An Introduction to Determinants
    William Thomson | , Published in 1882, 122 pages
76. Abstract Set Theory
    Thoralf A. Skolem | University of Notre Dame, Published in 1962, 70 pages
77. Markov Chains and Stochastic Stability
    S.P. Meyn, R.L. Tweedie | Springer, Published in 2005, 567 pages
78. Lectures in Basic Computational Numerical Analysis
    James M. McDonough | University of Kentucky, Published in 2001, 166 pages
79. Notes on the Combinatorial Fundamentals of Algebra
    Darij Grinberg | arXiv.org, Published in 2021, 1359 pages
80. Dynamics in One Complex Variable
    John Milnor | Princeton University Press, Published in 1991, 146 pages
81. Lectures on Fundamental Concepts of Algebra and Geometry
    John Wesley Young | Macmillan and co., Published in 1917, 264 pages
82. Popular Mathematics
    Robert Mudie | Orr and Smith, Published in 1836, 523 pages
83. Virtual Polyhedra: The Encyclopedia of Polyhedra
    George W. Hart | , Published in 2000
84. Group theory for Maths, Physics and Chemistry
    Arjeh Cohen, Rosane Ushirobira, Jan Draisma | , Published in 2007, 93 pages
85. Beyond partial differential equations: A course on linear and quasi-linear abstract hyperbolic evolution equations
    Horst R. Beyer | arXiv, Published in 2011, 275 pages
86. An Introduction to Asymptotic Analysis
    Simon J.A. Malham | Heriot-Watt University, Published in 2010, 56 pages
87. Periodic Solutions for Evolution Equations
    Mihai Bostan | American Mathematical Society, Published in 2002, 41 pages
88. Ten Chapters of the Algebraical Art
    Peter J. Cameron | Queen Mary, University of London, Published in 2007, 108 pages
89. Introduction to Symplectic Field Theory
    Y. Eliashberg, A. Givental, H. Hofer | arXiv, Published in 2000, 102 pages
90. Theory of Statistics
    James E. Gentle | George Mason University, Published in 2012, 900 pages
91. Functions and Their Graphs
    J. Nicholas, J. Hunter, J. Hargreaves | University of Sydney, Published in 1997, 77 pages
92. Category Theory in Context
    Emily Riehl | Dover Publications, Published in 2016, 258 pages
93. Design, Evaluation and Analysis of Combinatorial Optimization Heuristic Algorithms
    Daniel Karapetyan | arXiv, Published in 2012, 202 pages
94. An Introduction to Hilbert Module Approach to Multivariable Operator Theory
    Jaydeb Sarkar | arXiv, Published in 2013, 52 pages
95. A Problem Text in Advanced Calculus
    John M. Erdman | Portland State University, Published in 2008, 377 pages
96. A Semester Course in Trigonometry
    Marcel B. Finan | Arkansas Tech University, Published in 2003, 264 pages
97. Geometric Transformation of Finite Element Methods: Theory and Applications
    M. Holst, M. Licht | arXiv.org, Published in 2018, 21 pages
98. Beginning Statistics
    Douglas S. Shafer, Zhiyi Zhang | lardbucket.org, Published in 2014, 716 pages
99. Introductory Map Theory
    Yanpei Liu | Kapa & Omega, Published in 2010, 503 pages
100. Lectures on Noise Sensitivity and Percolation
     Christophe Garban, Jeffrey E. Steif | arXiv, Published in 2011, 150 pages
101. Special Course in Functional Analysis: (Non-)Commutative Topology
     Ville Turunen | Aalto TKK, Published in 2008, 83 pages
102. Varieties of Lattices
     Peter Jipsen, Henry Rose | Springer, Published in 1992, 168 pages
103. Ordinary Differential Equations
     Wong Yan Loi | National University of Singapore, Published in 2013, 121 pages
104. Problems in Mathematical Analysis
     B. P. Demidovich | MIR Publishers, , 511 pages
105. Complex Analytic and Differential Geometry
     Jean-Pierre Demailly | Universite de Grenoble, Published in 2007, 571 pages
106. Computational Statistics
     James E. Gentle | Springer, Published in 2009, 729 pages
107. Topology and Physics: A Historical Essay
     C. Nash | arXiv, Published in 1997, 60 pages
108. Lectures on Introduction to Algebraic Topology
     G. de Rham | Tata Institute of Fundamental Research, Published in 1969, 71 pages
109. Elementary Mathematics
     W W L Chen, X T Duong | Macquarie University, Published in 1999, 308 pages
110. Calculus Volume 3
     | OpenStax, Published in 2016, 1032 pages
111. Lectures on Topics in Analysis
     Raghavan Narasimhan | Tata Institute of Fundamental Research, Published in 1965, 205 pages
112. Introduction to the Theory of Fourier's Series and Integrals
     H. S. Carslaw | Macmillan and co., Published in 1921, 346 pages
113. Four-manifolds, Geometries and Knots
     Jonathan Hillman | arXiv, Published in 2009, 396 pages
114. Optimal Stopping and Applications
     Thomas S. Ferguson | UCLA, Published in 2008
115. Mathematics and Biology: The Interface, Challenges, and Opportunities
     Simon A. Levin | , Published in 2008
116. Computational Category Theory
     D.E. Rydeheard, R.M. Burstall | , Published in 2001, 263 pages
117. Elliptic Curves over Function Fields
     Douglas Ulmer | arXiv, Published in 2011, 72 pages
118. The Hopf Bifurcation and Its Applications
     J. E. Marsden, M. McCracken | Springer, Published in 1976, 424 pages
119. Thin Groups and Superstrong Approximation
     Emmanuel Breuillard, Hee Oh (eds.) | Cambridge University Press, Published in 2014, 362 pages
120. A Primer on Mapping Class Groups
     Benson Farb, Dan Margalit | Princeton University Press, Published in 2011, 509 pages
121. Calculus for Mathematicians, Computer Scientists, and Physicists
     Andrew D. Hwang | Holy Cross, Published in 1998, 487 pages
122. Fundamentals of Mathematics
     Denny Burzynski, Wade Ellis | OpenStax CNX, Published in 2023, 910 pages
123. Homogeneous Spaces and Equivariant Embeddings
     Dmitri A. Timashev | arXiv, Published in 2006, 250 pages
124. Combinatorial and Computational Geometry
     J. E. Goodman, J. Pach, E. Welzl | Cambridge University Press, Published in 2007, 616 pages
125. Proofs in Mathematics
     Alexander Bogomolny | Interactive Mathematics Miscellany and Puzzles, Published in 2013, 272 pages
126. A Concise Course in Algebraic Topology
     J. P. May | University Of Chicago Press, Published in 1999, 251 pages
127. Lectures On Levi Convexity Of Complex Manifolds And Cohomology Vanishing Theorems
     E. Vesentini | Tata Institute Of Fundamental Research, Published in 1967, 114 pages
128. Differential Equations with YouTube Examples
     Jeffrey R. Chasnov | BookBoon, Published in 2014, 57 pages
129. Notes on Measure and Integration
     John Franks | arXiv, Published in 2009, 118 pages
130. Elementary Practical Mathematics
     John Perry | The Macmillan Company, Published in 1913, 364 pages
131. Lectures On Some Fixed Point Theorems Of Functional Analysis
     F.F. Bonsall | Tata Institute Of Fundamental Research, Published in 1962, 147 pages
132. Mathematical Analysis I
     Elias Zakon | The Trillia Group, Published in 2004, 367 pages
133. On 2D Inverse Problems
     | Wikibooks, Published in 2013
134. Elementary Number Theory
     William Edwin Clark | University of South Florida, Published in 2002, 129 pages
135. Axiom: The Scientific Computation System
     Richard D. Jenks, Robert S. Sutor | axiom-developer.org, Published in 2003, 1200 pages
136. Lectures On Galois Cohomology of Classical Groups
     M. Kneser | Tata Institute of Fundamental Research, Published in 1969, 212 pages
137. Notes on Diffy Qs: Differential Equations for Engineers
     Jiří Lebl | Lulu.com, Published in 2017, 371 pages
138. The Homology of Iterated Loop Spaces
     F. R. Cohen, T. J. Lada, P. J. May | Springer, Published in 2009, 490 pages
139. Geometry of Four Dimensions
     Parker Manning Henry | The MacMillan Company, Published in 1914, 378 pages
140. A Course Of Differential Geometry
     John Edward Campbell | Clarendon Press, Published in 1926, 288 pages
141. Basic Analysis: Introduction to Real Analysis
     Jiri Lebl | Lulu.com, Published in 2009, 161 pages
142. Multivector Differential Calculus
     Eckhard Hitzer | arXiv, Published in 2013, 43 pages
143. An informal introduction to the ideas and concepts of noncommutative geometry
     Thierry Masson | arXiv, Published in 2006, 56 pages
144. Tensor Calculus
     Taha Sochi | viXra, Published in 2016, 91 pages
145. Introduction to Arithmetic Groups
     Dave Witte Morris | arXiv, Published in 2015, 491 pages
146. Introduction to Probability
     C. M. Grinstead, J. L. Snell | American Mathematical Society, Published in 1997, 518 pages
147. Statistics for Business and Economics
     Marcelo Fernandes | BookBoon, Published in 2009, 150 pages
148. An Introduction to Quantum Chaos
     Mason A. Porter | arXiv, Published in 2001, 57 pages
149. Quick Introduction to Tensor Analysis
     Ruslan Sharipov | Samizdat Press, Published in 2004, 47 pages
150. Sets, Groups and Knots
     Curtis T. McMullen | Harvard University, Published in 2008, 56 pages
151. Compiled and Solved Problems in Geometry and Trigonometry
     Florentin Smarandache | viXra.org, Published in 2015, 221 pages
152. Handbook of Mathematics for Engineers
     E. V. Huntington, L. A. Fischer | McGraw Hill, Published in 1918, 212 pages
153. Probability on Trees and Networks
     Russell Lyons, Yuval Peres | Cambridge University Press, Published in 2016, 716 pages
154. Optimization Algorithms: Methods and Applications
     Ozgur Baskan (ed.) | InTech, Published in 2016, 322 pages
155. A History of the Progress of the Calculus of Variations during the Nineteenth Century
     Isaac Todhunter | Adamant Media Corporation, Published in 2005, 549 pages
156. Plane Trigonometry and Numerical Computation
     J.W. Young, F.M. Morgan | The Macmillan Company, Published in 1919, 146 pages
157. Course of Linear Algebra and Multidimensional Geometry
     Ruslan Sharipov | Samizdat Press, Published in 1996, 143 pages
158. College Algebra
     Carl Stitz, Jeff Zeager | , Published in 2013, 716 pages
159. Category Theory for Programmers
     Bartosz Milewski | unglue.it, Published in 2017, 510 pages
160. 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
161. Elements of Applied Mathematics
     Cobb Herbert E. | Ginn and Company, Published in 1911, 292 pages
162. Introduction to Vassiliev Knot invariants
     S.Chmutov, S.Duzhin, J.Mostovoy | Ohio State Universit, Published in 2011, 512 pages
163. On Advanced Analytic Number Theory
     C.L. Siegel | Tata Institute of Fundamental Research, Published in 1961, 241 pages
164. Elementary Geometry: Practical and Theoretical
     C. Godfrey, A. W. Siddons | Cambridge University Press, Published in 1919, 438 pages
165. Mathematics for Computer Scientists
     Gareth J. Janacek, Mark L. Close | BookBoon, Published in 2008, 153 pages
166. Active Calculus
     Matt Boelkins | Grand Valley State University, Published in 2013, 525 pages
167. Substitutions in Dynamics, Arithmetics, and Combinatorics
     Pierre Arnoux, et al. | Springer, Published in 2002, 419 pages
168. Notes on Noncommutative Geometry
     Igor Nikolaev | arXiv, Published in 2015, 309 pages
169. Elementary Differential Equations
     William F. Trench | Brooks Cole, Published in 2001, 663 pages
170. Dr. Vogel's Gallery of Calculus Pathologies
     Thomas I. Vogel | , Published in 1997
171. Combinatorial Maps: Tutorial
     Dainis Zeps | Latvian University, Published in 2007, 61 pages
172. Euclid's Parallel Postulate: Its Nature, Validity and Place in Geometrical Systems
     John William Withers | Open Court Publishing Co., Published in 1904, 214 pages
173. Applied Statistics
     Mohammed A. Shayib | Bookboon, Published in 2013, 300 pages
174. Algebraic geometry and projective differential geometry
     Joseph M. Landsberg | arXiv, Published in 1998, 70 pages
175. Mathematical Recreations and Essays
     W. W. Rouse Ball | Macmillan, Published in 1914, 506 pages
176. Continuous Distributions
     Leif Mejlbro | BookBoon, Published in 2009, 167 pages
177. An Introduction to Noncommutative Spaces and their Geometry
     Giovanni Landi | arXiv, Published in 1997, 186 pages
178. Community Calculus
     David Guichard, Neal Koblitz | , Published in 2008, 446 pages
179. A Primer on Homotopy Colimits
     Daniel Dugger | University of Oregon, Published in 2008, 72 pages
180. Lectures on Elliptic Partial Differential Equations
     J.L. Lions | Tata Institute of Fundamental Research, Published in 1957, 121 pages
181. Notes on Differential Geometry
     Noel J. Hicks | Van Nostrand, Published in 1965, 183 pages
182. Lectures on Cauchy Problem
     Sigeru Mizohata | Tata Institute of Fundamental Research, Published in 1965, 191 pages
183. Introduction to Categories and Categorical Logic
     Samson Abramsky, Nikos Tzevelekos | arXiv, Published in 2011, 101 pages
184. Introduction to Characteritic Classes and Index Theory
     Jean-Pierre Schneiders | Universidade de Lisboa, Published in 2000, 236 pages
185. Numerical Methods with Applications
     Autar K Kaw, Egwu Eric Kalu | Lulu.com, Published in 2008, 728 pages
186. Galois Groups and Fundamental Groups
     David Meredith | San Francisco State University, Published in 1999, 89 pages
187. Differential Calculus
     Shanti Narayan | S. Chand And Company, Published in 1962, 429 pages
188. Introduction to Topological Groups
     Dikran Dikranjan | UCM, Published in 2007, 69 pages
189. Short introduction to Nonstandard Analysis
     E. E. Rosinger | arXiv, Published in 2004, 197 pages
190. Fractional Calculus: Theory and Applications
     Francesco Mainardi (ed.) | MDPI AG, Published in 2018, 210 pages
191. Residuals and Influence in Regression
     R. Dennis Cook, Sanford Weisberg | Chapman & Hall, Published in 1982, 240 pages
192. Exploring Discrete Mathematics Using Maple
     Kenneth H. Rosen | Mcgraw-Hill College, Published in 1996, 400 pages
193. Geometry Unbound
     Kiran S. Kedlaya | , Published in 2006, 142 pages
194. Model Theory
     Stephen G. Simpson | The Pennsylvania State University, Published in 1998, 127 pages
195. Tea Time Numerical Analysis
     Leon Q. Brin | Southern Connecticut State University, Published in 2014, 278 pages
196. A First Course in Mathematics Concepts for Elementary School Teachers
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 452 pages
197. The Radon Transform
     Sigurdur Helgason | Birkhauser Boston, Published in 1999, 196 pages
198. Rotations of Vectors Via Geometric Algebra
     James A. Smith | viXra, Published in 2016, 76 pages
199. Lectures on Polyhedral Topology
     John R. Stallings | Tata Institute of Fundamental Research, Published in 1967, 214 pages
200. A Practical Guide to Robust Optimization
     Bram L. Gorissen, Ihsan Yanıkoğlu, Dick den Hertog | arXiv, Published in 2015, 29 pages
201. Immersive Linear Algebra
     J. Strom, K. Astrom, T. Akenine-Moller | immersivemath, Published in 2017, 205 pages
202. The Algebra of Logic
     Louis Couturat | Project Gutenberg, Published in 2004, 102 pages
203. Riemannian Geometry
     Richard L. Bishop | arXiv, Published in 2013, 67 pages
204. Advanced Stochastic Processes
     Jan A. Van Casteren | Bookboon, Published in 2013, 404 pages
205. An Introduction to the Theory of Groups of Finite Order
     Harold Hilton | Oxford Clarendon Press, Published in 1908, 260 pages
206. The Geometry of Iterated Loop Spaces
     J. P. May | Springer, Published in 1972, 175 pages
207. Advanced Data Analysis from an Elementary Point of View
     Cosma Rohilla Shalizi | Cambridge University Press, Published in 2013, 586 pages
208. Almost None of the Theory of Stochastic Processes
     Cosma Rohilla Shalizi | Carnegie Mellon University, Published in 2010, 347 pages
209. The Principles Of Mathematics
     Bertrand Russell | W. W. Norton & Company, , 579 pages
210. Complex Manifolds and Hermitian Differential Geometry
     Andrew D. Hwang | University of Toronto, Published in 1997, 113 pages
211. Basic Category Theory
     Jaap van Oosten | University of Utrecht, Published in 2007, 88 pages
212. Spherical Harmonics in p Dimensions
     Christopher Frye, Costas J. Efthimiou | arXiv, Published in 2012, 95 pages
213. An Introduction to Mathematics
     A. N. Whitehead | Williams & Northgate, Published in 1911, 274 pages
214. Quantitative Analysis: Algebra with a Business Perspective
     Donna M. Wacha | Bookboon, Published in 2013, 303 pages
215. Lectures on Geodesics in Riemannian Geometry
     M. Berger | Tata Institute of Fundamental Research, Published in 1965, 317 pages
216. Algebraic Topology
     Allen Hatcher | Cambridge University Press, Published in 2001, 560 pages
217. Mathematics for Computer Science
     Eric Lehman, F Thomson Leighton, Albert R Meyer | MIT, Published in 2010, 557 pages
218. Algebraic Geometry
     Andreas Gathmann | University of Kaiserslautern, Published in 2014, 133 pages
219. Lectures on Deformations of Singularities
     Michael Artin | Tata Institute of Fundamental Research, Published in 1976, 110 pages
220. A Second Course in Logic
     Christopher Gauker | University of Cincinnati, Published in 2013, 172 pages
221. Notes on Classical Groups
     Peter J. Cameron | Queen Mary and Westfield College, Published in 2000, 96 pages
222. Basic Concepts of Enriched Category Theory
     Max Kelly | Cambridge University Press, Published in 2005, 143 pages
223. Lectures on Logarithmic Algebraic Geometry
     Arthur Ogus | University of California, Berkeley, Published in 2006, 255 pages
224. The Philosophy of Mathematics
     Albert Taylor Bledsoe | J.B. Lippincott & Co, Published in 1868, 248 pages
225. A Short Introduction to Classical and Quantum Integrable Systems
     O. Babelon | , Published in 2007, 145 pages
226. A Feel for Statistics
     Ivan Lowe | scientificlanguage.com, Published in 2016, 121 pages
227. Algorithmic Graph Theory
     David Joyner, Minh Van Nguyen, Nathann Cohen | Google Code, Published in 2010, 105 pages
228. Linear Algebra: Foundations to Frontiers
     M.E. Myers, P.M. van de Geijn, R.A. van de Geijn | ulaff.net, Published in 2014, 905 pages
229. Special Fuzzy Matrices for Social Scientists
     W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | InfoLearnQuest, Published in 2007, 302 pages
230. Practical Plane and Solid Geometry for Advanced Students
     J. Harrison, G.A. Baxandall | Macmillan, Published in 1899, 584 pages
231. Roots of a Compact Lie Group
     Kristopher Tapp | arXiv, Published in 2009, 39 pages
232. Logic for Computer Science
     | Wikibooks, Published in 2010
233. Basic Calculus Refresher
     Ismor Fischer | University of Wisconsin, Published in 2008, 21 pages
234. Isabelle/HOL: A Proof Assistant for Higher-Order Logic
     T. Nipkow, L.C. Paulson, M. Wenzel | Springer, Published in 2010, 223 pages
235. 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
236. Probability and Statistics: A Course for Physicists and Engineers
     Arak M. Mathai, Hans J. Haubold | De Gruyter Open, Published in 2017, 582 pages
237. Lectures on Representations of Complex Semi-Simple Lie Groups
     Thomas J. Enright | Tata Institute of Fundamental Research, Published in 1981, 94 pages
238. Lectures on Topics in Mean Periodic Functions and the Two-Radius Theorem
     J. Delsarte | Tata Institute of Fundamental Research, Published in 1961, 151 pages
239. Euclid and His Twentieth Century Rivals
     Nathaniel Miller | , Published in 2007, 124 pages
240. Probability Theory
     Curtis T. McMullen | Harvard University, Published in 2011, 98 pages
241. Euclidean Plane and Its Relatives
     Anton Petrunin | , Published in 2017, 201 pages
242. An Introduction to High Dimensional Knots
     Eiji Ogasa | arXiv, Published in 2013, 92 pages
243. Problems with and Without ... Problems!
     Florentin Smarandache | viXra, Published in 2011, 136 pages
244. Practical Mathematics
     A.H. Bell | Blackie And Son Limited, Published in 1919, 356 pages
245. Discrete Mathematics
     | Wikibooks, Published in 2012
246. Stochastic Processes
     Leif Mejlbro | BookBoon, Published in 2012, 263 pages
247. A Computational Introduction to Number Theory and Algebra
     Victor Shoup | Cambridge University Press, Published in 2005, 534 pages
248. Current Topics in Complex Algebraic Geometry
     Herbert Clemens, János Kollár | Cambridge University Press, Published in 1996, 172 pages
249. Lectures on Harmonic Analysis
     Thomas Wolff | American Mathematical Society, Published in 2003, 85 pages
250. Mathematical Analysis II
     Elias Zakon | The TrilliaGroup, Published in 2009, 436 pages
251. An Elementary Introduction to Groups and Representations
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367. Quick Tour of the Topology of R
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449. Combinatorial Theory
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