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. Geometric Theorems and Arithmetic Functions
   Jozsef Sandor | American Research Press, Published in 2002, 55 pages
2. Hilbert Space Methods for Partial Differential Equations
   R. E. Showalter | Pitman, Published in 1994, 208 pages
3. Group Theory
   J. S. Milne | , Published in 2009, 127 pages
4. The Mathematics of Investment
   William L.Hart | D.C Heath and Company, Published in 1924, 321 pages
5. Lectures in Basic Computational Numerical Analysis
   James M. McDonough | University of Kentucky, Published in 2001, 166 pages
6. General Topology
   Pierre Schapira | Université Paris VI, Published in 2011, 78 pages
7. Topics in Logic and Foundations
   Stephen G. Simpson | The Pennsylvania State University, Published in 2005, 89 pages
8. Geometry, Topology and Physics
   Maximilian Kreuzer | Technische Universitat Wien, Published in 2010, 69 pages
9. A set of new Smarandache functions, sequences and conjectures in number theory
   Felice Russo | American Research Press, Published in 2000, 114 pages
10. Numerical Methods for Large Eigenvalue Problems
    Yousef Saad | SIAM, Published in 2011, 285 pages
11. A Mathematicians Miscellany
    J. E. Littlewood | Methuen And Company Limited, Published in 1953, 152 pages
12. A Course in Combinatorial Optimization
    Alexander Schrijver | University of Amsterdam, Published in 2012, 221 pages
13. Dynamical Systems
    Jose A. Tenreiro Machado (ed.) | MDPI AG, Published in 2014, 553 pages
14. Seven Sketches in Compositionality: An Invitation to Applied Category Theory
    Brendan Fong, David I Spivak | arXiv.org, Published in 2018, 243 pages
15. Advances in Discrete Differential Geometry
    Alexander I. Bobenko (ed.) | Springer, Published in 2016, 439 pages
16. Easy Mathematics: Arithmetic and Algebra for General Readers
    Oliver Lodge | The Macmillan Company, Published in 1910, 466 pages
17. Differential Topology and Morse Theory
    Dirk Schuetz | University of Sheffield, Published in 2009, 96 pages
18. Elementary Set Theory with a Universal Set
    Randall Holmes | , Published in 2005, 240 pages
19. Hyperbolic Geometry
    J.W. Cannon, W.J. Floyd, R. Kenyon, W.R. Parry | MSRI, Published in 1997, 57 pages
20. Modeling, Functions, and Graphs: Algebra for College Students
    Katherine Yoshiwara | Los Angeles Pierce College, Published in 2017, 344 pages
21. Axiomatic Set Theory
    Michael Meyling | , Published in 2011, 36 pages
22. Real Functions in One Variable: Calculus 1a
    Leif Mejlbro | BookBoon, Published in 2006, 146 pages
23. Model Categories and Simplicial Methods
    Paul Goerss, Kristen Schemmerhorn | Northwestern University, Published in 2004, 46 pages
24. Introduction to Proof Theory
    Gilles Dowek | ESSLLI, Published in 2001, 82 pages
25. Statistics
    Philip B. Stark | University of California, Berkeley, Published in 2011
26. Probability on Trees and Networks
    Russell Lyons, Yuval Peres | Cambridge University Press, Published in 2016, 716 pages
27. A Probability Course for the Actuaries
    Marcel B. Finan | Arkansas Tech University, Published in 2011, 517 pages
28. A Concise Introduction to Mathematical Logic
    Wolfgang Rautenberg | Springer, Published in 2009, 131 pages
29. Applied Mathematical Programming Using Algebraic Systems
    Bruce A. McCarl, Thomas H. Spreen | Texas A&M University, Published in 2011, 567 pages
30. Kähler-Einstein metrics: Old and New
    Daniele Angella, Cristiano Spotti | arXiv.org, Published in 2017, 48 pages
31. An Introduction to the Smarandache Function
    Charles Ashbacher | Erhus Univ Pr, Published in 1995, 62 pages
32. Reversibility and Stochastic Networks
    F.P. Kelly | John Wiley and Sons Ltd, Published in 1979, 233 pages
33. H2 Mathematics Textbook
    Yan Min Choo | , Published in 2016, 1384 pages
34. Fractional Dynamics
    Carlo Cattani, et al. | De Gruyter Open Ltd, Published in 2016, 408 pages
35. Geometry of Numbers with Applications to Number Theory
    Pete L. Clark | University of Georgia, Published in 2015, 159 pages
36. Introduction to Differential Equations
    Jeffrey R. Chasnov | The Hong Kong University of Science &Technology, Published in 2010, 126 pages
37. Discrete Mathematics with Algorithms
    M. O. Albertson, J. P. Hutchinson | J. Wiley, Published in 1988, 550 pages
38. Multivariable and Vector Analysis
    W W L Chen | Macquarie University, Published in 2008, 203 pages
39. Open Trigonometry: Basic to Advanced
    | Wikibooks, Published in 2014, 51 pages
40. Probability Theory: The Logic of Science
    E. T. Jaynes | Cambridge University Press, Published in 2002, 758 pages
41. Math That Makes You Go Wow
    M. Boittin, E. Callahan, D. Goldberg, J. Remes | Ohio State University, Published in 1998
42. Applied Probability
    Paul E Pfeiffer | Connexions, Published in 2008, 634 pages
43. Elementary Geometry: Practical and Theoretical
    C. Godfrey, A. W. Siddons | Cambridge University Press, Published in 1919, 438 pages
44. Introduction to the Galois Theory of Linear Differential Equations
    Michael F. Singer | arXiv, Published in 2008, 83 pages
45. Plane and Spherical Trigonometry in three parts
    Henry Bedingfield Goodwin | Longmans, Green, and Co., Published in 1907, 296 pages
46. Theory of Probability: A Historical Essay
    Oscar Sheynin | arXiv.org, Published in 2017, 316 pages
47. Notes on Fermionic Fock Space for Number Theorists
    Greg W. Anderson | The University of Arizona, Published in 2000, 99 pages
48. Introductory Statistics
    T. H. Wonnacott, R. J. Wonnacott | Wiley, Published in 1969, 416 pages
49. A First Book in Algebra
    Wallace C. Boyden | Project Gutenberg, Published in 2004, 189 pages
50. Introduction to Applied Linear Algebra: Vectors, Matrices and Least Squares
    Stephen Boyd, Lieven Vandenberghe | Cambridge University Press, Published in 2018, 473 pages
51. The General Theory of Dirichlet's Series
    G.H. Hardy, Marcel Riesz | Cambridge University Press, Published in 1915, 95 pages
52. Combinatorial Geometry with Application to Field Theory
    Linfan Mao | InfoQuest, Published in 2009, 499 pages
53. Trigonometry
    Michael Corral | mecmath.net, Published in 2009, 174 pages
54. Notes on Noncommutative Geometry
    Igor Nikolaev | arXiv, Published in 2015, 309 pages
55. Complex Analysis on Riemann Surfaces
    Curtis McMullen | Harvard University, Published in 2005, 89 pages
56. Commutative Algebra and Noncommutative Algebraic Geometry
    David Eisenbud, et al. | Cambridge University Press, Published in 2015, 775 pages
57. Mathematics, Basic Math and Algebra
    | Naval Education and Training, Published in 2003, 296 pages
58. Lectures on Integrable Probability
    Alexei Borodin, Vadim Gorin | arXiv, Published in 2012, 63 pages
59. A History of the Progress of the Calculus of Variations during the Nineteenth Century
    Isaac Todhunter | Adamant Media Corporation, Published in 2005, 549 pages
60. Multivariable Calculus
    Jerry Shurman | Reed College, Published in 2010, 523 pages
61. Differential Geometry: A Geometric Introduction
    David W. Henderson | Project Euclid, Published in 2013, 250 pages
62. Introduction to Statistical Thought
    Michael Lavine | , Published in 2008, 434 pages
63. Archimedes
    Thomas Little Heath | , Published in 1920, 76 pages
64. Mathematical Philosophy: A Study of Fate and Freedom
    Cassius Jackson Keyser | E.P. Dutton & company, Published in 1922, 490 pages
65. New Frontiers in Graph Theory
    Yagang Zhang (ed.) | InTech, Published in 2012, 526 pages
66. Sequences and Power Series: Guidelines for Solutions of Problems
    Leif Mejlbro | BookBoon, Published in 2007, 104 pages
67. Statistics
    | Wikibooks, Published in 2013, 236 pages
68. Geometric Transformation of Finite Element Methods: Theory and Applications
    M. Holst, M. Licht | arXiv.org, Published in 2018, 21 pages
69. Lectures on Measure Theory and Probability
    H.R. Pitt | Tata institute of Fundamental Research, Published in 1958, 126 pages
70. The Axioms Of Descriptive Geometry
    Alfred North Whitehead | Cambridge University Press, Published in 1914, 96 pages
71. A Primer on Mapping Class Groups
    Benson Farb, Dan Margalit | Princeton University Press, Published in 2011, 509 pages
72. Lectures on Elementary Probability
    William G. Faris | University of Arizona, Published in 2002, 62 pages
73. Mathematical Analysis I
    Elias Zakon | The Trillia Group, Published in 2004, 367 pages
74. Linear Elliptic Equations of Second Order
    Erich Miersemann | Leipzig University, Published in 2012, 87 pages
75. Probability, Geometry and Integrable Systems
    Mark Pinsky, Bjorn Birnir | Cambridge University Press, Published in 2007, 428 pages
76. Axiomatic Set Theory I
    A. C. Walczak-Typke | , Published in 2009, 128 pages
77. Deformations of Algebras in Noncommutative Geometry
    Travis Schedler | arXiv, Published in 2015, 120 pages
78. The Place of Partial Differential Equations in Mathematical Physics
    Ganesh Prasad | Patna University, Published in 1924, 64 pages
79. The Air Force Brain Booster Book
    John C. Sparks | Air Force Publication, Published in 2006, 58 pages
80. Equivariant Stable Homotopy Theory
    G. Jr. Lewis, J. P. May, M. Steinberger, J. E. McClure | Springer, Published in 1986, 538 pages
81. Numerical Analysis I
    Mark Embree | Rice University, Published in 2012, 207 pages
82. Introduction to Twisted Commutative Algebras
    Steven V Sam, Andrew Snowden | arXiv, Published in 2012, 56 pages
83. A Friendly Introduction to Mathematical Logic
    Christopher C. Leary, Lars Kristiansen | Milne Library Publishing, Published in 2015, 380 pages
84. Synthetic Differential Geometry
    Anders Kock | Cambridge University Press, Published in 2006, 241 pages
85. Stats without Tears
    Stan Brown | BrownMath.com, Published in 2016, 243 pages
86. Grassmann Algebra
    John Browne | , Published in 2001, 238 pages
87. Bayesian Networks: Advances and Novel Applications
    Douglas McNair (ed.) | IntechOpen, Published in 2019, 256 pages
88. The Handbook of Essential Mathematics
    John C. Sparks | Air Force Publication, Published in 2006, 205 pages
89. The Convenient Setting of Global Analysis
    Andreas Kriegl, Peter W. Michor | American Mathematical Society, Published in 1997, 624 pages
90. The First Six Books of the Elements of Euclid
    John Casey, Euclid | Longmans, Green, and Co., Published in 1885, 233 pages
91. Mathematics for Computer Scientists
    Gareth J. Janacek, Mark L. Close | BookBoon, Published in 2008, 153 pages
92. Mathematics for the Physical Sciences
    Herbert S Wilf | Dover Publications, Published in 1962, 298 pages
93. Natural Product Xn on matrices
    W. B. Vasantha Kandasamy, Florentin Smarandache | arXiv, Published in 2012, 342 pages
94. An Elementary Treatise on Coordinate Geometry
    Robert J.T. Bell | Macmillan, Published in 1963, 398 pages
95. A First Course of Partial Differential Equations in Physical Sciences and Engineering
    Marcel B. Finan | Arkansas Tech University, Published in 2009, 285 pages
96. Logic for Computer Scientists
    Uli Furbach | Wikibooks, Published in 2010
97. Wave Propagation Analysis with Boundary Element Method
    Chiara Guardasoni | Ledizioni LediPublishing, Published in 2010, 130 pages
98. Discrepancy Theory
    William Chen | Macquarie University, Published in 2012, 99 pages
99. Learning Statistics with R
    Daniel Navarro | University of Adelaide, Published in 2014, 564 pages
100. C*-algebras
     John Erdos | King's College, London, Published in 2003, 51 pages
101. Lectures On Levi Convexity Of Complex Manifolds And Cohomology Vanishing Theorems
     E. Vesentini | Tata Institute Of Fundamental Research, Published in 1967, 114 pages
102. Geometry: From Ancient to Modern
     Wong Yan Loi | National University of Singapore, Published in 1999, 52 pages
103. The Geometry of Vector Calculus
     Tevian Dray, Corinne A. Manogue | Oregon State University, Published in 2012, 325 pages
104. Mathematical Biology
     Jeffrey R. Chasnov | The Hong Kong University of Science & Technology, Published in 2010, 115 pages
105. Distribution of Prime Numbers
     W W L Chen | Macquarie University, Published in 2003, 134 pages
106. Introduction Probaility and Statistics
     Muhammad El-Taha | University of Southern Maine, Published in 2003, 147 pages
107. Algebraic L-theory and Topological Manifolds
     A. A. Ranicki | Cambridge University Press, Published in 2011, 365 pages
108. Statistics, Probability, and Game Theory: papers in honor of David Blackwell
     David Blackwell, at al. | IMS, Published in 1996, 407 pages
109. First Steps in Numerical Analysis
     R. Hosking, S. Joe, D. Joyce, and J. Turner | , Published in 1998, 338 pages
110. A. N. Whitehead's Geometric Algebra
     Stephen Blake | , Published in 2005, 280 pages
111. Advanced Topics in Probability
     S.R.S. Varadhan | New York University, Published in 2011, 203 pages
112. Strange Attractors: Creating Patterns in Chaos
     Julien C. Sprott | M & T Books, Published in 2000, 591 pages
113. Interacting Particle Systems
     Stefan Grosskinsky | University of Warwick, Published in 2009, 56 pages
114. Introductory Statistics Notes
     Jamie DeCoster | University of Alabama, Published in 1998, 48 pages
115. Notes on Differential Geometry and Lie Groups
     Jean Gallier | University of Pennsylvania, Published in 2010
116. Lectures on Stratification of Complex Analytic Sets
     M.-H. Schwartz | Tata Institute of Fundamental Research, Published in 1966, 67 pages
117. Using R for Introductory Statistics
     John Verzani | Chapman & Hall/CRC, Published in 2004, 114 pages
118. Yet Another Calculus Text
     Dan Sloughter | , Published in 2007, 147 pages
119. Lectures on Stochastic Processes
     K. Ito | Tata Institute of Fundamental Research, Published in 1960, 207 pages
120. Local Theory of Holomorphic Foliations and Vector Fields
     Julio C. Rebelo, Helena Reis | arXiv, Published in 2011, 115 pages
121. Riemannian Submanifolds: A Survey
     Bang-Yen Chen | arXiv, Published in 2013, 272 pages
122. Modern Geometry
     Robert Sharpley | University of South Carolina, Published in 2008, 230 pages
123. An introduction to Algebra and Topology
     Pierre Schapira | University of Luxemburg, Published in 2012, 78 pages
124. Noncommutative Geometry
     Alain Connes | Academic Press, Published in 1994, 654 pages
125. The Manual of Mathematical Magic
     Peter McOwan | Queen Mary, University of London, Published in 2010, 96 pages
126. The Pythagorean Theorem: Crown Jewel of Mathematics
     John C. Sparks | AuthorHouse, Published in 2008, 190 pages
127. Introduction to Shimura Varieties
     J.S. Milne | , Published in 2004, 149 pages
128. A Primer of Real Analysis
     Dan Sloughter | Synechism.org, Published in 2009, 152 pages
129. Lectures on Topics In The Theory of Infinite Groups
     B.H. Neumann | Tata Institute of Fundamental Research, Published in 1960, 200 pages
130. Introductory Treatise On Lie's Theory Of Finite Continuous Transformation Groups
     John Edward Campbell | Oxford Clarendon Press, Published in 1903, 460 pages
131. Mathematical Reasoning: Writing and Proof
     Ted Sundstrom | Pearson Education, Inc., Published in 2013, 591 pages
132. Lectures on Elliptic Partial Differential Equations
     J.L. Lions | Tata Institute of Fundamental Research, Published in 1957, 121 pages
133. Nonstandard Analysis in Topology
     Sergio Salbany, Todor Todorov | arXiv, Published in 2011, 48 pages
134. An Introduction to Modular Forms
     Henri Cohen | arXiv.org, Published in 2018, 58 pages
135. Differential Calculus for Beginners
     Alfred Lodge | Deighton, Bell, & Co., Published in 1905, 322 pages
136. Basic Calculus Refresher
     Ismor Fischer | University of Wisconsin, Published in 2008, 21 pages
137. Abstract Algebra I
     Marcel B. Finan | Arkansas Tech University, Published in 2004
138. Lectures on Logarithmic Algebraic Geometry
     Arthur Ogus | University of California, Berkeley, Published in 2006, 255 pages
139. Integral Calculus
     Leah Edelstein-Keshet | University of British Columbia, Published in 2010, 267 pages
140. Ergodic Optimization, Zero Temperature Limits and the Max-plus Algebra
     A. T. Baraviera, R. Leplaideur, A. O. Lopes | arXiv, Published in 2013, 106 pages
141. Mathematical Analysis II
     Elias Zakon | The TrilliaGroup, Published in 2009, 436 pages
142. Introduction to Numerical Methods and Matlab Programming for Engineers
     Todd Young, Martin J. Mohlenkamp | Ohio University, Published in 2017, 182 pages
143. Homological Methods in Noncommutative Geometry
     D. Kaledin | , Published in 2008, 77 pages
144. Calculus for Mathematicians, Computer Scientists, and Physicists
     Andrew D. Hwang | Holy Cross, Published in 1998, 487 pages
145. Lectures on Analytic Differential Equations
     Yulij Ilyashenko, Sergei Yakovenko | American Mathematical Society, Published in 2007, 599 pages
146. Computational Mathematics for Differential Equations
     N. V. Kopchenova, I. A. Maron | , Published in 1975
147. Introduction to Probability
     Davar Khoshnevisan, Firas Rassoul-Agha | University of Utah, Published in 2012, 269 pages
148. 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
149. Data Assimilation: A Mathematical Introduction
     K.J.H. Law, A.M. Stuart, K.C. Zygalakis | arXiv.org, Published in 2015, 158 pages
150. Introduction to Real Analysis
     Lee Larson | University of Louisville, Published in 2014, 184 pages
151. Iterative Methods for Sparse Linear Systems
     Yousef Saad | PWS, Published in 1996
152. Complex Analysis
     Christian Berg | Kobenhavns Universitet, Published in 2012, 192 pages
153. Counting Rocks! An Introduction to Combinatorics
     Henry Adams, et al. | arXiv.org, Published in 2021, 220 pages
154. Advanced Calculus
     Lynn H. Loomis, Shlomo Sternberg | Jones and Bartlett Publishers, Published in 1989, 592 pages
155. Irrational Numbers and Their Representation by Sequences and Series
     Henry Parker Manning | J. Wiley & sons, Published in 1906, 156 pages
156. Functional Analysis
     Gerald Teschl | University of Vienna, Published in 2009, 142 pages
157. The Algebra of Invariants
     J.H. Grace, A. Young | Cambridge, University Press, Published in 1903, 404 pages
158. Applied Stochastic Processes in Science and Engineering
     Matt Scott | University of Waterloo, Published in 2013, 316 pages
159. Introductory Mathematical Analysis
     W.P. Webber, L.C. Plant | John Wiley & sons, Published in 1919, 332 pages
160. Algebraic Number Theory
     J.S. Milne | , Published in 2008, 163 pages
161. Determinants and Matrices
     R. Kochendörfer | Teubner, Published in 1961
162. Topology of Stratified Spaces
     Greg Friedman, et al. | Cambridge University Press, Published in 2011, 477 pages
163. Harmonic Analysis
     Russell Brown | University of Kentucky, Published in 2009, 191 pages
164. Calculus
     Gilbert Strang | Wellsley Cambridge Press, Published in 1991, 671 pages
165. Ten British Mathematicians
     Alexander Macfarlane | , Published in 1916, 108 pages
166. Real Numbers and Fascinating Fractions
     N. M. Beskin | , Published in 1986
167. Curves and Surfaces in Geometric Modeling: Theory and Algorithms
     Jean Gallier | Morgan Kaufmann, Published in 1999, 502 pages
168. Bayesian Field Theory
     J. C. Lemm | arXiv.org, Published in 2000, 200 pages
169. A Course of Pure Geometry: Properties of the Conic Sections
     E.H. Askwith | Cambridge University Press, Published in 1917, 314 pages
170. The Continuum and Other Types of Serial Order
     Edward V. Huntington | Dover Publications, Published in 1917, 90 pages
171. Groups as Graphs
     W. B. V. Kandasamy, F. Smarandache | CuArt, Published in 2009, 170 pages
172. Introduction to Topological Groups
     Dikran Dikranjan | UCM, Published in 2007, 69 pages
173. Cusps of Gauss Mappings
     Thomas Banchoff, Terence Gaffney, Clint McCrory | Pitman Advanced Pub. Program, Published in 1982, 88 pages
174. Precalculus: An Investigation of Functions
     David Lippman, Melonie Rasmussen | Lulu.com, Published in 2011, 568 pages
175. Geometry Unbound
     Kiran S. Kedlaya | , Published in 2006, 142 pages
176. Projective Geometry
     Nigel Hitchin | , Published in 2003, 74 pages
177. Basic Arithmetic Student Workbook
     Donna Gaudet, Amy Volpe, Jenifer Bohart | Scottsdale Community College, Published in 2013, 244 pages
178. Fundamentals of Linear Algebra
     Marcel B. Finan | Arkansas Tech University, Published in 2001, 196 pages
179. Lectures On Unique Factorization Domains
     P. Samuel | Tata Institute Of Fundamental Research, Published in 1964, 17 pages
180. A Handbook of Statistics
     Darius Singpurwalla | Bookboon, Published in 2013, 79 pages
181. Topics in Differential Geometry
     Peter W. Michor | American Mathematical Society, Published in 2008, 429 pages
182. A Short Introduction to Classical and Quantum Integrable Systems
     O. Babelon | , Published in 2007, 145 pages
183. Seminar on Triples and Categorical Homology Theory
     B. Eckmann | Springer, Published in 1969, 304 pages
184. Notes on Category Theory with examples from basic mathematics
     Paolo Perrone | arXiv, Published in 2021, 181 pages
185. Natural Operations in Differential Geometry
     Ivan Kolar, Peter W. Michor, Jan Slovak | Springer, Published in 1993, 437 pages
186. Statistical Theory
     Ryan Martin | University of Illinois at Chicago, Published in 2015, 117 pages
187. Collaborative Statistics
     Barbara Illowsky, Susan Dean | Illowsky Publising, Published in 2012, 728 pages
188. Complex Analytic and Differential Geometry
     Jean-Pierre Demailly | Universite de Grenoble, Published in 2007, 571 pages
189. Introduction to Differential Topology, de Rham Theory and Morse Theory
     Michael Muger | Radboud University, Published in 2005, 80 pages
190. Lectures on Sheaf Theory
     C.H. Dowker | Tata Institute of Fundamental Research, Published in 1957, 201 pages
191. Precalculus
     David H. Collingwood, K. David Prince, Matthew M. Conroy | , Published in 2011, 335 pages
192. Complex Analysis
     C. McMullen | Harvard University, Published in 2010, 106 pages
193. Group Theory
     Ferdi Aryasetiawan | University of Lund, Published in 1997, 140 pages
194. Introduction to Algebraic Geometry
     Sudhir R. Ghorpade | Indian Institute of Technology Bombay, Published in 2007, 20 pages
195. Foundations of Combinatorics with Applications
     Edward A. Bender, S. Gill Williamson | Dover Publications, Published in 2006, 480 pages
196. Principles of Uncertainty
     Joseph B. Kadane | Chapman and Hall/CRC, Published in 2011, 499 pages
197. Advanced High School Statistics
     David M Diez, et al. | OpenIntro, Published in 2017, 458 pages
198. Congruence Lattices of Finite Algebras
     William DeMeo | arXiv, Published in 2012, 130 pages
199. Analysis of Puzzles
     Umesh Nair | , Published in 2006, 88 pages
200. The Adams-Novikov Spectral Sequence and the Homotopy Groups of Spheres
     Paul Goerss | Northwestern University, Published in 2007, 47 pages
201. An informal introduction to the ideas and concepts of noncommutative geometry
     Thierry Masson | arXiv, Published in 2006, 56 pages
202. Mixed Motives
     Marc Levine | American Mathematical Society, Published in 1998, 91 pages
203. Banach Modules and Functors on Categories of Banach Spaces
     J. Cigler, V. Losert, P.W. Michor | Marcel Dekker Inc, Published in 1979, 297 pages
204. Fundamental Numerical Methods and Data Analysis
     George W. Collins, II | NASA ADS, Published in 2003, 254 pages
205. Introduction to Differential Geometry and General Relativity
     Stefan Waner | , Published in 2005, 138 pages
206. A Second Semester of Linear Algebra
     S. E. Payne | University of Colorado Denver, Published in 2009, 236 pages
207. Trigonometry Notes
     Steven Sy | Michigan State University, Published in 2008, 448 pages
208. Beginning and Intermediate Algebra
     Tyler Wallace | Lulu.com, Published in 2010, 489 pages
209. Reader-friendly Introduction to the Measure Theory
     Vasily Nekrasov | Yetanotherquant.de, Published in 2009, 117 pages
210. Mathematics for Algorithm and Systems Analysis
     Edward A. Bender, S. Gill Williamson | Dover Publications, Published in 2005, 256 pages
211. College Algebra
     Paul Dawkins | Lamar University, Published in 2011, 352 pages
212. A Short Account of the History of Mathematics
     W. W. Rouse Ball | Dover Publications, Published in 1960, 466 pages
213. Introduction to Statistical Thinking
     Benjamin Yakir | The Hebrew University of Jerusalem, Published in 2011, 324 pages
214. The Essential Elementary and Intermediate Algebra
     Jon Blakely | JonBlakely.com, Published in 2016, 314 pages
215. Proof, Sets, and Logic
     M. Randall Holmes | Boise State University, Published in 2009, 207 pages
216. Clifford Algebra, Geometric Algebra, and Applications
     Douglas Lundholm, Lars Svensson | arXiv, Published in 2009, 117 pages
217. Progress in Commutative Algebra 2: Closures, Finiteness and Factorization
     Christopher Francisco, et al. | De Gruyter Open, Published in 2012, 315 pages
218. Analysis Tools with Applications
     Bruce K. Driver | Springer, Published in 2003, 790 pages
219. Logic for Computer Science
     | Wikibooks, Published in 2010
220. Euclid's Parallel Postulate: Its Nature, Validity and Place in Geometrical Systems
     John William Withers | Open Court Publishing Co., Published in 1904, 214 pages
221. Elementary Linear Algebra
     Keith Matthews | University of Queensland, Published in 1998, 302 pages
222. Advanced Stochastic Processes
     Jan A. Van Casteren | Bookboon, Published in 2013, 404 pages
223. Tensor Trigonometry
     A.S. Ninul | FIZMATLIT, Published in 2021, 320 pages
224. Euclidean Plane and Its Relatives
     Anton Petrunin | , Published in 2017, 201 pages
225. Mathematical Illustrations: A Manual of Geometry and PostScript
     Bill Casselman | Cambridge University Press, Published in 2005, 336 pages
226. Riemannian Geometry
     Richard L. Bishop | arXiv, Published in 2013, 67 pages
227. Design, Evaluation and Analysis of Combinatorial Optimization Heuristic Algorithms
     Daniel Karapetyan | arXiv, Published in 2012, 202 pages
228. The World of Mathematics
     Philipp Legner | Mathigon, Published in 2012
229. Men of Mathematics
     E.T. Bell | Archive.org, Published in 1937
230. Digraphs: Theory, Algorithms and Applications
     Jorgen Bang-Jensen, Gregory Gutin | Springer, Published in 2002, 772 pages
231. Frobenius Splittings and B-Modules
     Wilberd van der Kallen | Springer, Published in 1993, 112 pages
232. Multivariate Statistics: Concepts, Models, and Applications
     David W. Stockburger | Missouri State University, Published in 2001
233. Algebraic Equations
     George Ballard Mathews | Cambridge University Press, Published in 1907, 88 pages
234. An Introduction to Determinants
     William Thomson | , Published in 1882, 122 pages
235. Practical Mathematics for Home Study
     Claude Irwin Palmer | McGraw-Hill, Published in 1919, 528 pages
236. Lectures on Topics in Mean Periodic Functions and the Two-Radius Theorem
     J. Delsarte | Tata Institute of Fundamental Research, Published in 1961, 151 pages
237. On Riemann's Theory of Algebraic Functions and their Integrals
     Felix Klein | Macmillan and Bowes, Published in 1893, 128 pages
238. An Introduction to the Algebra of Quantics
     E.B. Elliott | The Clarendon Press, Published in 1913, 444 pages
239. Elementary Trigonometry
     W. E. Paterson | Clarendon Press, Published in 1911, 213 pages
240. Probability and Statistics for Geophysical Processes
     D. Koutsoyiannis | National Technical University of Athens, Published in 2008, 161 pages
241. Mathematics and Biology: The Interface, Challenges, and Opportunities
     Simon A. Levin | , Published in 2008
242. Integration and Differential Equations
     R.S. Johnson | BookBoon, Published in 2012, 122 pages
243. Geometry with an Introduction to Cosmic Topology
     Mike Hitchman | , Published in 2017, 177 pages
244. Amusements in Mathematics
     Henry Ernest Dudeney | Nelson, Published in 1917, 280 pages
245. Finite Difference Computing with PDEs
     Hans Petter Langtangen, Svein Linge | Springer, Published in 2017, 507 pages
246. Category Theory and Functional Programming
     Mikael Vejdemo-Johansson | University of St. Andrews, Published in 2012, 99 pages
247. Finite Group Representations for the Pure Mathematician
     Peter Webb | University of Minnesota, Published in 2007, 183 pages
248. Conic Sections Treated Geometrically
     W. H. Besant | George Bell and Sons, Published in 1895, 367 pages
249. Unfolding the Labyrinth: Open Problems in Mathematics, Physics, Astrophysics
     Florentin Smarandache, at al. | arXiv, Published in 2006, 139 pages
250. Fredholm Operators and Spectral Flow
     Nils Waterstraat | arXiv, Published in 2016, 61 pages
251. An Invitation to General Algebra and Universal Constructions
     George M. Bergman | Henry Helson, Published in 1998, 398 pages
252. Frobenius Splitting in Commutative Algebra
     Karen E. Smith, Wenliang Zhang | arXiv, Published in 2014, 53 pages
253. Lie Algebras
     Shlomo Sternberg | , Published in 2004, 198 pages
254. Algebraic Invariants
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