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. An Introduction to D-Modules
   Jean-Pierre Schneiders | Universite de Liege, Published in 1991, 73 pages
2. Applied Mathematics by Example
   Jeremy Pickles | BookBoon, Published in 2010, 164 pages
3. Differential and Integral Calculus
   Virgil Snyder | American book company, Published in 1902, 348 pages
4. Random Matrix Theory, Interacting Particle Systems and Integrable Systems
   Percy Deift, Peter Forrester (eds) | Cambridge University Press, Published in 2014, 528 pages
5. Symbolic Logic: A Second Course
   Gary Hardegree | UMass Amherst, Published in 2003, 246 pages
6. Contact Geometry
   Hansjoerg Geiges | arXiv, Published in 2004, 86 pages
7. 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
8. Applied Combinatorics
   Mitchel T. Keller, William T. Trotter | Georgia Institute of Technology, Published in 2013, 345 pages
9. Statistical Tools for Economists
   Daniel McFadden | University of California, Berkeley, Published in 2001
10. Category Theory Lecture Notes
    Michael Barr, Charles Wells | , Published in 1999, 133 pages
11. Indian Mathematics
    G. R. Kaye | Thacker, Spink & Co., Published in 1915, 102 pages
12. Practical Mathematics for Home Study
    Claude Irwin Palmer | McGraw-Hill, Published in 1919, 528 pages
13. Generic Polynomials: Constructive Aspects of the Inverse Galois Problem
    C. U. Jensen, A. Ledet, N. Yui | Cambridge University Press, Published in 2002, 268 pages
14. Introduction to Numerical Methods
    Jeffrey R. Chasnov | The Hong Kong University, Published in 2012, 63 pages
15. Set Theory and Topology: An Introduction to the Foundations of Analysis
    Felix Nagel | arXiv, Published in 2013, 160 pages
16. Linear Methods of Applied Mathematics
    Evans M. Harrell II, James V. Herod | , Published in 2000
17. The Nature of Mathematics
    Philip E. B. Jourdain | T. C. & E. C. Jack, Published in 1919, 136 pages
18. Differential and Integral Calculus
    C. E. Love, E. D. Rainville | The MacMillan Company, Published in 1916, 369 pages
19. Linear Algebra, Infinite Dimensions, and Maple
    James V. Herod | Georgia Tech, Published in 1997
20. Discrete Dynamical Systems
    Arild Wikan | Bookboon, Published in 2013, 254 pages
21. Elementary Analytic Functions: Complex Functions Theory a-1
    Leif Mejlbro | BookBoon, Published in 2010, 145 pages
22. Functions of a Complex Variable
    Thomas Murray MacRobert | The Macmillan Company, Published in 1917, 328 pages
23. Radically Elementary Probability Theory
    Edward Nelson | Princeton University Press, Published in 1987, 111 pages
24. A Short Course on Approximation Theory
    N. L. Carothers | Bowling Green State University, Published in 2009, 159 pages
25. Tabletop: Analog Game Design
    Greg Costikyan, Drew Davidson | , Published in 2011, 206 pages
26. Applied Statistics
    Mohammed A. Shayib | Bookboon, Published in 2013, 300 pages
27. Applied Mathematics in Ferroelectricity and Piezoelectricity
    Kenji Uchino | MDPI Books, Published in 2023, 634 pages
28. Sets, Relations, Functions
    Ivo Düntsch, Günther Gediga | Methodos Publishers (UK), Published in 2000, 55 pages
29. Elements of Plane Trigonometry
    Hugh Blackburn | Macmillan and co, Published in 1871, 143 pages
30. A Spiral Workbook for Discrete Mathematics
    Harris Kwong | Open SUNY Textbooks, Published in 2015, 307 pages
31. Notes on Symmetric Spaces
    Jonathan Holland, Bogdan Ion | arXiv, Published in 2012, 109 pages
32. Quantum Physics, Relativity, and Complex Spacetime
    Gerald Kaiser | University of Massachusetts at Lowell, Published in 2003, 252 pages
33. Geometry of Four Dimensions
    Parker Manning Henry | The MacMillan Company, Published in 1914, 378 pages
34. Proofs and Concepts: the fundamentals of abstract mathematics
    Dave Witte Morris, Joy Morris | University of Lethbridge, Published in 2009, 220 pages
35. Probability, Geometry and Integrable Systems
    Mark Pinsky, Bjorn Birnir | Cambridge University Press, Published in 2007, 428 pages
36. Lectures On Galois Cohomology of Classical Groups
    M. Kneser | Tata Institute of Fundamental Research, Published in 1969, 212 pages
37. The Elements of Non-Euclidean Plane Geometry and Trigonometry
    Horatio Scott Carslaw | Longmans, Green and co., Published in 1916, 202 pages
38. Business Mathematics: A Textbook
    Edward I. Edgerton, Wallace E. Bartholomew | The Ronald Press Co., Published in 1921, 331 pages
39. Numerical Methods for Large Eigenvalue Problems
    Yousef Saad | SIAM, Published in 2011, 285 pages
40. Precalculus: An Inquiry-Based Approach
    William Mahavier, Paul Howard | Oklahoma Christian University, Published in 2023, 152 pages
41. Theory and Applications of Finite Groups
    G. A. Miller, H. F. Blichfeldt, L. E. Dickson | J. Wiley, Published in 1916, 424 pages
42. Frobenius Splitting in Commutative Algebra
    Karen E. Smith, Wenliang Zhang | arXiv, Published in 2014, 53 pages
43. Tilings and Patterns
    E O Harriss | Mathematicians.org.uk, Published in 2008, 43 pages
44. Homotopy Theories and Model Categories
    W. G. Dwyer, J. Spalinski | University of Notre Dame, Published in 1995, 56 pages
45. Intermediate Algebra
    Donna Gaudet, et al. | Scottsdale Community College, Published in 2013, 480 pages
46. Partial Differential Equations
    Erich Miersemann | Leipzig University, Published in 2012, 205 pages
47. Mathematics and Biology: The Interface, Challenges, and Opportunities
    Simon A. Levin | , Published in 2008
48. Lectures on Integrable Probability
    Alexei Borodin, Vadim Gorin | arXiv, Published in 2012, 63 pages
49. Non-Euclidean Geometry: A Critical and Historical Study of its Development
    Roberto Bonola | Open Court Publishing Company, Published in 1912, 292 pages
50. Discrepancy Theory
    William Chen | Macquarie University, Published in 2012, 99 pages
51. Axiomatic Set Theory I
    A. C. Walczak-Typke | , Published in 2009, 128 pages
52. Plane and Spherical Trigonometry in three parts
    Henry Bedingfield Goodwin | Longmans, Green, and Co., Published in 1907, 296 pages
53. Revealing Statistical Principles
    J.K. Lindsey | Hodder Education Publishers, Published in 1999, 225 pages
54. Introduction to Differential Equations
    Jeffrey R. Chasnov | The Hong Kong University of Science &Technology, Published in 2010, 126 pages
55. Topology Illustrated
    Peter Saveliev | Intelligent Perception, Published in 2014, 301 pages
56. Lectures on Modular Functions of One Complex Variable
    H. Maass | Tata institute of Fundamental Research, Published in 1983, 242 pages
57. Elements of Analytical Geometry of Two Dimensions
    M. Briot, M. Bouquet | Werner school book company, Published in 1896, 602 pages
58. A Treatise on Probability
    John Maynard Keynes | Macmillan and co, Published in 1921, 561 pages
59. Introduction to the Probability Theory
    Taha Sochi | viXra.org, Published in 2023, 185 pages
60. Fundamentals of Linear Algebra
    Marcel B. Finan | Arkansas Tech University, Published in 2001, 196 pages
61. Some Fundamental Theorems in Mathematics
    Oliver Knill | arXiv.org, Published in 2018, 133 pages
62. Analysis on Homogeneous Spaces
    Ralph Howard | Royal Institute of Technology Stockholm, Published in 1994, 108 pages
63. CK-12 Geometry
    V. Cifarelli, A. Gloag, D. Greenberg, J. Sconyers, B. Zahner | CK-12 Foundation, Published in 2009, 810 pages
64. Constructive Geometry
    John G. Kerr | Blackie And Son Limited., Published in 1904, 135 pages
65. Understanding Calculus
    Faraz Hussain | , Published in 2008
66. Mathematical Methods for Economic Theory: a tutorial
    Martin J. Osborne | University of Toronto, Published in 2007, 301 pages
67. Combinatorial Maps: Tutorial
    Dainis Zeps | Latvian University, Published in 2007, 61 pages
68. Differential and Integral Equations: Boundary Value Problems and Adjoints
    S. Schwabik, M. Tvrdy, O. Vejvoda | Academia Praha, Published in 1979, 246 pages
69. An Introductory Course Of Mathematical Analysis
    Charles Walmsley | Cambridge University Press, Published in 1920, 268 pages
70. Higher Mathematics for Students of Chemistry and Physics
    Joseph William Mellor | Longmans, Green, Published in 1902, 580 pages
71. Statistics for the Social and Behavioral Sciences
    David A. Kenny | Little, Brown, Published in 1987, 407 pages
72. Design of Comparative Experiments
    R. A. Bailey | Cambridge University Press, Published in 2008, 348 pages
73. A Short Account of the History of Mathematics
    W. W. Rouse Ball | Dover Publications, Published in 1960, 466 pages
74. Combinatory Analysis
    Percy A. MacMahon | Cambridge University Press, Published in 1915, 612 pages
75. Model Categories and Simplicial Methods
    Paul Goerss, Kristen Schemmerhorn | Northwestern University, Published in 2004, 46 pages
76. Linear Programming
    Jim Burke | University of Washington, Published in 2012
77. The Geometry of Iterated Loop Spaces
    J. P. May | Springer, Published in 1972, 175 pages
78. Abstract Algebra
    J. Mathos, R. Campanha | Wikibooks, Published in 2012
79. Notes on Categories and Groupoids
    P. J. Higgins | Van Nostrand Reinhold, Published in 1971, 195 pages
80. Calculus of Residua: Complex Functions Theory a-2
    Leif Mejlbro | BookBoon, Published in 2010, 140 pages
81. An Introduction to High Dimensional Knots
    Eiji Ogasa | arXiv, Published in 2013, 92 pages
82. Topics in Discrete Mathematics
    A.F. Pixley | Harvey Mudd College, Published in 2010, 173 pages
83. Proof in Mathematics: An Introduction
    James Franklin, Albert Daoud | Kew Books, Published in 2011, 104 pages
84. Lectures on Elliptic Partial Differential Equations
    J.L. Lions | Tata Institute of Fundamental Research, Published in 1957, 121 pages
85. Manifolds
    Neil Lambert | King's College London, Published in 2011, 59 pages
86. Linear Algebra
    Jim Hefferon | Saint Michael's College, Published in 2017, 507 pages
87. Euclid's Elements
    D.E.Joyce | , Published in 1998
88. Geometric Complexity Theory: An Introduction for Geometers
    J.M. Landsberg | arXiv, Published in 2013, 38 pages
89. Computable Integrability
    Alexey Shabat, Elena Kartashova | arXiv, Published in 2011, 174 pages
90. Analysis Tools with Applications
    Bruce K. Driver | Springer, Published in 2003, 790 pages
91. Linearization via the Lie Derivative
    Carmen Chicone, Richard Swanson | American Mathematical Society, Published in 2000, 64 pages
92. Synthetic Differential Geometry
    Anders Kock | Cambridge University Press, Published in 2006, 241 pages
93. Random Matrix Models and Their Applications
    Pavel Bleher, Alexander Its | Cambridge University Press, Published in 2001, 438 pages
94. A Mathematicians Miscellany
    J. E. Littlewood | Methuen And Company Limited, Published in 1953, 152 pages
95. Introduction to Statistical Thinking
    Benjamin Yakir | The Hebrew University of Jerusalem, Published in 2011, 324 pages
96. Current Topics in Complex Algebraic Geometry
    Herbert Clemens, János Kollár | Cambridge University Press, Published in 1996, 172 pages
97. Thin Groups and Superstrong Approximation
    Emmanuel Breuillard, Hee Oh (eds.) | Cambridge University Press, Published in 2014, 362 pages
98. Introduction to Infinitesimal Analysis: Functions of One Real Variable
    N. J. Lennes | John Wiley & Sons, Published in 1907, 225 pages
99. On Lie Algebras Of Prime Characteristic
    George B. Seligman | American Mathematical Society, Published in 1956, 93 pages
100. An Introduction to Mathematical Logic
     Wolfram Pohlers, Thomas Glass | , Published in 1992, 229 pages
101. Algorithms in Real Algebraic Geometry
     S. Basu, R. Pollack, M. Roy | Springer, Published in 2009, 672 pages
102. Elementary Differential Equations
     William F. Trench | Brooks Cole, Published in 2001, 663 pages
103. Rotations of Vectors Via Geometric Algebra
     James A. Smith | viXra, Published in 2016, 76 pages
104. Noncommutative Geometry
     Alain Connes | Academic Press, Published in 1994, 654 pages
105. A First Course in Ordinary Differential Equations
     Norbert Euler | Bookboon, Published in 2015, 232 pages
106. Lectures On Levi Convexity Of Complex Manifolds And Cohomology Vanishing Theorems
     E. Vesentini | Tata Institute Of Fundamental Research, Published in 1967, 114 pages
107. Comments and topics on Smarandache notions and problems
     Kenichiro Kashihara | Erhus University Press, Published in 1996, 50 pages
108. Elliptic Functions and Elliptic Curves
     Jan Nekovar | Institut de Mathematiques de Jussieu, Published in 2004, 175 pages
109. Multivariable Calculus
     George Cain, James Herod | , Published in 1997
110. Temporal Networks
     Petter Holme, Jari Saramäki | arXiv, Published in 2011, 25 pages
111. Probability and Statistics for Geophysical Processes
     D. Koutsoyiannis | National Technical University of Athens, Published in 2008, 161 pages
112. Introduction to Differential Geometry and General Relativity
     Stefan Waner | , Published in 2005, 138 pages
113. Grassmann Algebra
     John Browne | , Published in 2001, 238 pages
114. Surfing on the ocean of numbers
     Henry Ibstedt | Erhus University Press, Published in 1997, 76 pages
115. Bayesian Field Theory
     J. C. Lemm | arXiv.org, Published in 2000, 200 pages
116. Ricci Flow and the Poincare Conjecture
     John Morgan, Gang Tian | American Mathematical Society, Published in 2007, 493 pages
117. A History of the Progress of the Calculus of Variations during the Nineteenth Century
     Isaac Todhunter | Adamant Media Corporation, Published in 2005, 549 pages
118. The Convenient Setting of Global Analysis
     Andreas Kriegl, Peter W. Michor | American Mathematical Society, Published in 1997, 624 pages
119. Hilbert Spaces and Operators on Hilbert Spaces
     Leif Mejlbro | BookBoon, Published in 2009, 109 pages
120. Lectures on a Method in the Theory of Exponential Sums
     M. Jutila | Tata Institute of Fundamental Research, Published in 1987, 134 pages
121. Real Functions in One Variable: Calculus 1a
     Leif Mejlbro | BookBoon, Published in 2006, 146 pages
122. Engineering Mathematics 1
     Ian Craw, Stuart Dagger, John Pulham | , Published in 2003, 187 pages
123. APEX Calculus
     Gregory Hartman, et al. | APEXcalculus.com, Published in 2015, 874 pages
124. Introductory Statistics: Concepts, Models, and Applications
     David W. Stockburger | Missouri State University, Published in 1996, 487 pages
125. Measure Theory in Non-Smooth Spaces
     Nicola Gigli | De Gruyter Open, Published in 2017, 346 pages
126. An Introduction to Contemporary Mathematics
     John Hutchinson | Australian National University, Published in 2010, 295 pages
127. Introduction to Probability
     Leif Mejlbro | BookBoon, Published in 2009, 61 pages
128. A Problem-Solving Approach to College Algebra
     Marcel B. Finan | Arkansas Tech University, Published in 2002, 92 pages
129. Abelian Varieties
     J. S. Milne | , Published in 2008, 172 pages
130. Distribution of Prime Numbers
     W W L Chen | Macquarie University, Published in 2003, 134 pages
131. Theory of Groups of Finite Order
     William Burnside | Cambridge University Press, Published in 1897, 456 pages
132. Undergraduate Analysis Tools
     Bruce K. Driver | University of California, San Diego, Published in 2013, 186 pages
133. Intersection Graphs: An Introduction
     Madhumangal Pal | arXiv, Published in 2014, 49 pages
134. Introduction to Characteritic Classes and Index Theory
     Jean-Pierre Schneiders | Universidade de Lisboa, Published in 2000, 236 pages
135. Geometry and Billiards
     Serge Tabachnikov | , Published in 1991, 186 pages
136. Elementary Abstract Algebra
     W. Edwin Clark | University of South Florida, Published in 2001, 105 pages
137. Smarandache Rings
     W. B. Vasantha Kandasamy | American Research Press, Published in 2002, 222 pages
138. A Quick Review of Commutative Algebra
     Sudhir R. Ghorpade | Indian Institute of Technology, Bombay, Published in 2000, 13 pages
139. Correlation and Causality
     David A. Kenny | John Wiley & Sons Inc, Published in 1979, 353 pages
140. Augustus De Morgan, Polymath
     K. Attar, A. Rice, C. Stray | Open Book Publishers, Published in 2024, 384 pages
141. Linear Regression Using R: An Introduction to Data Modeling
     David R. Lilja | University of Minnesota, Published in 2016, 91 pages
142. Hyperbolic Functions
     James McMahon | John Wiley & Sons, Published in 1906, 106 pages
143. Mathematical Reasoning: Writing and Proof
     Ted Sundstrom | Pearson Education, Inc., Published in 2013, 591 pages
144. Numerical Methods for Large Eigenvalue Problems
     Yousef Saad | , Published in 2011, 286 pages
145. Mathematical Computation
     Ian Craw | University of Aberdeen, Published in 2003, 156 pages
146. A Century of Mathematics in America
     Peter Duren, Richard A. Askey | American Mathematical Society, Published in 1988
147. Functional Analysis with Applications
     Palle Jorgensen, Feng Tian | arXiv, Published in 2014, 338 pages
148. A First Course in Complex Analysis
     M. Beck, G. Marchesi, D. Pixton | San Francisco State University, Published in 2012, 127 pages
149. Second-order Ordinary Differential Equations
     R.S. Johnson | Bookboon, Published in 2012, 181 pages
150. Techniques of Applied Mathematics
     Andrew Fowler | University of Oxford, Published in 2005, 141 pages
151. An Introduction to the Theory of Numbers
     Leo Moser | The Trillia Group, Published in 2007, 95 pages
152. Periodic Solutions for Evolution Equations
     Mihai Bostan | American Mathematical Society, Published in 2002, 41 pages
153. Complex Analysis
     Christian Berg | Kobenhavns Universitet, Published in 2012, 192 pages
154. Brief Calculus
     Benjamin Crowell | , Published in 2015, 207 pages
155. Natural Topology
     Frank Waaldijk | arXiv, Published in 2012, 174 pages
156. Basic Calculus Refresher
     Ismor Fischer | University of Wisconsin, Published in 2008, 21 pages
157. Ergodic Optimization, Zero Temperature Limits and the Max-plus Algebra
     A. T. Baraviera, R. Leplaideur, A. O. Lopes | arXiv, Published in 2013, 106 pages
158. Categorical Homotopy Theory
     Emily Riehl | Cambridge University Press, Published in 2014, 292 pages
159. Design, Evaluation and Analysis of Combinatorial Optimization Heuristic Algorithms
     Daniel Karapetyan | arXiv, Published in 2012, 202 pages
160. Trigonometry Notes
     Steven Sy | Michigan State University, Published in 2008, 448 pages
161. Elementary Linear Algebra
     Keith Matthews | University of Queensland, Published in 1998, 302 pages
162. A History of Mathematics
     Florian Cajori | The MacMillan Company, Published in 1909, 556 pages
163. Introduction to Mathematical Philosophy
     Bertrand Russell | University of Massachusetts Amherst, Published in 2009, 181 pages
164. Lectures on Sieve Methods and Prime Number Theory
     Y. Motohashi | Tata Institute of Fundamental Research, Published in 1983, 181 pages
165. Model-Theoretic Logics
     J. Barwise, S. Feferman | Springer, Published in 1985, 893 pages
166. A Friendly Introduction to Number Theory
     Joseph H. Silverman | Pearson Education, Inc., Published in 2012, 56 pages
167. Category Theory and Functional Programming
     Mikael Vejdemo-Johansson | University of St. Andrews, Published in 2012, 99 pages
168. Roots of a Compact Lie Group
     Kristopher Tapp | arXiv, Published in 2009, 39 pages
169. Numerical Solutions of Engineering Problems
     K. Nandakumar | University of Alberta, Published in 1998, 193 pages
170. First Course in the Theory of Equations
     Leonard E. Dickson | John Wiley & Sons, Published in 1922, 207 pages
171. Essays on the Theory of Numbers
     Richard Dedekind | The Open Court Publishing, Published in 1901, 78 pages
172. Set Linear Algebra and Set Fuzzy Linear Algebra
     W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral | InfoLearnQuest, Published in 2008, 345 pages
173. Lectures on Moduli of Curves
     D. Gieseker | Tata Institute of Fundamental Research, Published in 1982, 88 pages
174. A First Course in Mathematics Concepts for Elementary School Teachers
     Marcel B. Finan | Arkansas Tech University, Published in 2006, 452 pages
175. An Introduction to Algebraic Number Theory
     F. Oggier | Nanyang Technological University, Published in 2010, 95 pages
176. Higher Elementary Geometry
     Venugopal | , Published in 1958, 135 pages
177. Contributions to Fourier Analysis
     A. Zygmund, et al. | Princeton University Press, Published in 1950, 207 pages
178. Short introduction to Nonstandard Analysis
     E. E. Rosinger | arXiv, Published in 2004, 197 pages
179. The Construction and Study of Certain Important Algebras
     Claude Chevalley | The Mathematical Society Of Japan, Published in 1955, 80 pages
180. Theory of Probability: A Historical Essay
     Oscar Sheynin | arXiv.org, Published in 2017, 316 pages
181. Sam Loyd's Cyclopedia of 5000 Puzzles tricks and Conundrums
     Sam Loyd | The Lamb Publishing Company, Published in 1914, 194 pages
182. Orbital Integrals on Reductive Lie Groups and Their Algebras
     Francisco Bulnes | InTech, Published in 2013, 181 pages
183. Perturbation Theory of Dynamical Systems
     Nils Berglund | arXiv, Published in 2001, 111 pages
184. New Frontiers in Graph Theory
     Yagang Zhang (ed.) | InTech, Published in 2012, 526 pages
185. Interacting Particle Systems
     Stefan Grosskinsky | University of Warwick, Published in 2009, 56 pages
186. The Chaos Hypertextbook
     Glenn Elert | , Published in 2007
187. Lectures On Unique Factorization Domains
     P. Samuel | Tata Institute Of Fundamental Research, Published in 1964, 17 pages
188. Course of Differential Geometry
     Ruslan Sharipov | Samizdat Press, Published in 2004, 132 pages
189. A Gentle Introduction to Tensors
     Boaz Porat | Technion, Published in 2010, 87 pages
190. Precalculus: An Investigation of Functions
     David Lippman, Melonie Rasmussen | Lulu.com, Published in 2011, 568 pages
191. Notes on the course Algebraic Topology
     Boris Botvinnik | University of Oregon, Published in 2010, 181 pages
192. Introduction to Statistical Thought
     Michael Lavine | , Published in 2008, 434 pages
193. Model Theory
     C. Ward Henson | University of South Carolina, Published in 2010, 122 pages
194. Introduction to Mathematical Analysis
     B. Lafferriere, G. Lafferriere, N. Mau Nam | Portland State University Library, Published in 2015, 141 pages
195. Topics in Random Matrix Theory
     Terence Tao | , Published in 2011, 340 pages
196. Mathematical Logic
     Stephen G. Simpson | Pennsylvania State University, Published in 2013, 128 pages
197. Lectures on Minimal Surface Theory
     Brian White | arXiv, Published in 2013, 46 pages
198. Numerical Analysis: Theory and Application
     Jan Awrejcewicz | InTech, Published in 2011, 626 pages
199. Basic Concepts of Enriched Category Theory
     Max Kelly | Cambridge University Press, Published in 2005, 143 pages
200. Multivariable Calculus
     Jerry Shurman | Reed College, Published in 2010, 523 pages
201. Introductory Finite Difference Methods for PDEs
     D. M. Causon, C. G. Mingham | BookBoon, Published in 2010, 144 pages
202. The Solution of the Pyramid Problem
     Robert Ballard | John Wiley & Sons Ltd., Published in 1882, 109 pages
203. A Summary of Calculus
     Karl Heinz Dovermann | University of Hawaii, Published in 2003, 164 pages
204. Geometry and Group Theory
     Christopher Pope | Texas A&M University, Published in 2008, 181 pages
205. E 'Infinite' Ring Spaces and E 'Infinite' Ring Spectra
     J. P. May | Springer, Published in 1977, 280 pages
206. Mathematical Analysis I
     Elias Zakon | The Trillia Group, Published in 2004, 367 pages
207. Frobenius Splittings and B-Modules
     Wilberd van der Kallen | Springer, Published in 1993, 112 pages
208. n-Linear Algebra of Type I and Its Applications
     W. B. V. Kandasamy, F. Smarandache | InfoLearnQuest, Published in 2008, 120 pages
209. Linear Algebra
     Jonathan Gleason | University of California, Published in 2018, 681 pages
210. Vedic Mathematics
     W. B. Kandasamy, F. Smarandache | Automaton, Published in 2006, 220 pages
211. Lectures on Topics in Stochastic Differential Equations
     Daniel W. Stroock | Tata Institute of Fundamental Research, Published in 1982, 93 pages
212. Entropy of Compact Group Automorphisms
     Thomas Ward | University of East Anglia, Published in 2001, 84 pages
213. Proof Theory and Philosophy
     Greg Restall | consequently.org, Published in 2006, 168 pages
214. First Principles of Symmetrical Beauty
     David Ramsay Hay | W. Blackwood and sons, Published in 1846, 305 pages
215. Ordinary Differential Equations
     Wong Yan Loi | National University of Singapore, Published in 2013, 121 pages
216. Statistical Theory
     Ryan Martin | University of Illinois at Chicago, Published in 2015, 117 pages
217. Infinite-dimensional Lie Algebras
     Iain Gordon | University of Edinburgh, Published in 2009, 55 pages
218. Basics of Algebra and Analysis For Computer Science
     Jean Gallier | , Published in 2007, 254 pages
219. Finite Euclidean and Non-Euclidean Geometries
     Rene De Vogelaere | arXiv, Published in 2019, 778 pages
220. Metric and Topological Spaces
     T. W. Körner | University of Cambridge, Published in 2014, 109 pages
221. A Computational Introduction to Number Theory and Algebra
     Victor Shoup | Cambridge University Press, Published in 2005, 534 pages
222. Topology Without Tears
     Sidney A. Morris | , Published in 2007, 373 pages
223. Concepts and Applications of Inferential Statistics
     Richard Lowry | , Published in 2008, 366 pages
224. Groups Around Us
     Pavel Etingof | Massachusetts Institute of Technology, Published in 2018, 25 pages
225. Projective Differential Geometry Old and New
     V. Ovsienko, S. Tabachnikov | Cambridge University Press, Published in 2004, 281 pages
226. Multivariate Statistics: Concepts, Models, and Applications
     David W. Stockburger | Missouri State University, Published in 2001
227. Category Theory Lecture Notes
     Daniele Turi | University of Edinburgh, Published in 2001, 61 pages
228. First Course in Statistics
     D Caradog Jones | G Bell, Published in 1921, 288 pages
229. Encyclopedia of Dynamical Systems
     D. Anosov, at al. | Scholarpedia, Published in 2009
230. Introduction to the Method of Multiple Scales
     Per Jakobsen | arXiv, Published in 2014, 65 pages
231. Axiom: The Scientific Computation System
     Richard D. Jenks, Robert S. Sutor | axiom-developer.org, Published in 2003, 1200 pages
232. Elementary Differential Geometry
     Gilbert Weinstein | UAB, Published in 2009, 62 pages
233. Group Theory: Birdtracks, Lie's, and Exceptional Groups
     Predrag Cvitanovic | Princeton University Press, Published in 2011, 289 pages
234. Compiled and Solved Problems in Geometry and Trigonometry
     Florentin Smarandache | viXra.org, Published in 2015, 221 pages
235. Iterative Methods for Linear and Nonlinear Equations
     C.T. Kelley | SIAM, Published in 1995, 172 pages
236. Introduction To Algebraical Geometry
     A. Clement Jones | Oxford University Press, Published in 1912, 558 pages
237. Stochastic Analysis - Notes
     I. F. Wilde | , Published in 2009, 103 pages
238. Lower K- and L-theory
     Andrew Ranicki | Cambridge University Press, Published in 2001, 177 pages
239. Commutative Algebra
     Pete L. Clark | University of Georgia, Published in 2015, 363 pages
240. Lie Groups in Physics
     G. 't Hooft, M. J. G. Veltman | Utrecht University, Published in 2007, 75 pages
241. Digraphs: Theory, Algorithms and Applications
     Jorgen Bang-Jensen, Gregory Gutin | Springer, Published in 2002, 772 pages
242. Magic Squares and Cubes
     W. S. Andrews | Open Court Publishing Company, Published in 1917, 428 pages
243. Symbolic Logic: A First Course
     Gary Hardegree | Mcgraw-Hill College, Published in 1999, 468 pages
244. Partial Differential Equations: An Introduction
     A.D.R. Choudary, Saima Parveen, Constantin Varsan | arXiv, Published in 2010, 208 pages
245. An Elementary Course in Synthetic Projective Geometry
     Derrick Norman Lehmer | Project Gutenberg, Published in 2005, 120 pages
246. Lectures on Introduction to Algebraic Topology
     G. de Rham | Tata Institute of Fundamental Research, Published in 1969, 71 pages
247. Notes on Noncommutative Geometry
     Igor Nikolaev | arXiv, Published in 2015, 309 pages
248. An Introduction to Semialgebraic Geometry
     Michel Coste | Universite de Rennes, Published in 2002, 78 pages
249. An Infinitely Large Napkin
     Evan Chen | GitHub, Published in 2024, 1036 pages
250. The Numerical Approximation of Functional Differential Equations
     Daniele Venturi | arXiv, Published in 2016, 113 pages
251. A Second Course in Logic
     Christopher Gauker | University of Cincinnati, Published in 2013, 172 pages
252. Isometrica: A Geometrical Introduction to Planar Crystallographic Groups
     George Baloglou | , Published in 2007, 473 pages
253. Experimental Design and Analysis
     Howard J. Seltman | Carnegie Mellon University, Published in 2012, 428 pages
254. Lectures on Topics In The Theory of Infinite Groups
     B.H. Neumann | Tata Institute of Fundamental Research, Published in 1960, 200 pages
255. Advanced Data Analysis from an Elementary Point of View
     Cosma Rohilla Shalizi | Cambridge University Press, Published in 2013, 586 pages
256. Set Theoretic Real Analysis
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