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 wellknown htmlbased 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.

Multivariate Statistics: Concepts, Models, and Applications
David W. Stockburger  Missouri State University, Published in 2001

Convex Bodies and Algebraic Geometry
Tadao Oda  Springer, Published in 1988, 219 pages

Handbook of Mathematical Functions
M. Abramowitz, I. A. Stegun  GPO, Published in 1964, 1046 pages

Fourmanifolds, Geometries and Knots
Jonathan Hillman  arXiv, Published in 2009, 396 pages

Linear Algebra Review and Reference
Zico Kolter  Stanford University, Published in 2015, 26 pages

Lectures on Potential Theory
M. Brelot  Tata Institute of Fundamental Research, Published in 1967, 158 pages

Introduction to Infinitesimal Analysis: Functions of One Real Variable
N. J. Lennes  John Wiley & Sons, Published in 1907, 225 pages

Exterior Differential Systems and EulerLagrange Partial Differential Equations
R. Bryant, P. Griffiths, D. Grossman  University Of Chicago Press, Published in 2008, 219 pages

Galois Lectures
J. Douglas, P. Franklin, C.J. Keyser, L. Infeld  Morrill Press, Published in 1941, 141 pages

The First Six Books of the Elements of Euclid
John Casey, Euclid  Longmans, Green, and Co., Published in 1885, 233 pages

The Logic Of Chance
John Venn  Macmillan And Company, Published in 1888, 550 pages

Linear Elliptic Equations of Second Order
Erich Miersemann  Leipzig University, Published in 2012, 87 pages

The Continuum and Other Types of Serial Order
Edward V. Huntington  Dover Publications, Published in 1917, 90 pages

First Principles of Symmetrical Beauty
David Ramsay Hay  W. Blackwood and sons, Published in 1846, 305 pages

Algebraic Geometry over the Complex Numbers
Donu Arapura  Purdue University, Published in 2009, 234 pages

Combinatorial Maps: Tutorial
Dainis Zeps  Latvian University, Published in 2007, 61 pages

Theory of Groups of Finite Order
William Burnside  Cambridge University Press, Published in 1897, 456 pages

The Theory of Determinants and Their Applications
Robert Forsyth Scott  Cambridge University Press, Published in 1904, 308 pages

Surfing on the ocean of numbers
Henry Ibstedt  Erhus University Press, Published in 1997, 76 pages

Intuitionistic Logic
Nick Bezhanishvili, Dick de Jongh  Universiteit van Amsterdam, Published in 2010, 57 pages

Hyperbolic Geometry
J.W. Cannon, W.J. Floyd, R. Kenyon, W.R. Parry  MSRI, Published in 1997, 57 pages

Functional Analysis
Feng Tian, Palle E.T. Jorgensen  arXiv, Published in 2010, 98 pages

Graph Theory
Keijo Ruohonen  Tampere University of Technology, Published in 2008, 114 pages

Lectures on Harmonic Analysis
Thomas Wolff  American Mathematical Society, Published in 2003, 85 pages

Prerequisites in Algebraic Topology
Bjorn Ian Dundas  NTNU, Published in 2005, 55 pages

Lecture Notes in Discrete Mathematics
Marcel B. Finan  Arkansas Tech University, Published in 2001, 224 pages

Residues and Duality
Robin Hartshorne  Springer, Published in 1966, 434 pages

Everything Maths: Grade 10 Mathematics
Neels van der Westhuizen, et al.  Siyavula, Published in 2012, 469 pages

Algebraic Problems and Exercises for High School
I. Goian, R. Grigor, V. Marin, F. Smarandache  The Educational Publisher, Published in 2015, 146 pages

Inner Algebra
Aaron Maxwell  Lulu.com, Published in 2005, 94 pages

Statistics
 Wikibooks, Published in 2013, 236 pages

Iterative Methods for Linear and Nonlinear Equations
C.T. Kelley  SIAM, Published in 1995, 172 pages

OpenIntro Statistics
D.M. Diez, C.D. Barr, M. CetinkayaRundel  OpenIntro, Published in 2012, 426 pages

Model Theory, Algebra and Geometry
D. Haskell, A. Pillay, C. Steinhorn  Cambridge University Press, Published in 2000, 227 pages

Analytic Geometry and Calculus
F.S. Woods, F.H. Bailey  Ginn and Company, Published in 1917, 542 pages

Special Functions, a Review
S. Arfaoui, I. Rezgui, A.B. Mabrouk  viXra, Published in 2016, 69 pages

Matroid Decomposition
Klaus Truemper  Leibniz, Published in 1998, 398 pages

Optimal Stopping and Applications
Thomas S. Ferguson  UCLA, Published in 2008

Lectures on Disintegration of Measures
L. Schwartz  Tata Institute of Fundamental Research, Published in 1976, 139 pages

Toposes, Triples and Theories
Michael Barr, Charles Wells  SpringerVerlag, Published in 2005, 302 pages

Mathematics and Biology: The Interface, Challenges, and Opportunities
Simon A. Levin  , Published in 2008

A Practical Guide to Robust Optimization
Bram L. Gorissen, Ihsan Yanıkoğlu, Dick den Hertog  arXiv, Published in 2015, 29 pages

An Architecture for Combinator Graph Reduction
Philip J. Koopman, Jr.  Academic Press, Published in 1990, 176 pages

Notes on Categories and Groupoids
P. J. Higgins  Van Nostrand Reinhold, Published in 1971, 195 pages

Basic Arithmetic Student Workbook
Donna Gaudet, Amy Volpe, Jenifer Bohart  Scottsdale Community College, Published in 2013, 244 pages

Logic for Computer Science
 Wikibooks, Published in 2010

Introductory Maths for Chemists
J. E. Parker  Bookboon, Published in 2013, 136 pages

Nonstandard Analysis in Topology
Sergio Salbany, Todor Todorov  arXiv, Published in 2011, 48 pages

Beyond partial differential equations: A course on linear and quasilinear abstract hyperbolic evolution equations
Horst R. Beyer  arXiv, Published in 2011, 275 pages

Introduction to Functional Analysis
Vladimir V. Kisil  University of Leeds, Published in 2010, 111 pages

Analytic Geometry and Principles of Algebra
A. Ziwet, L.A. Hopkins, E.R. Hedrick  The Macmillan Company, Published in 1913, 398 pages

Lie Groups, Physics, and Geometry
Robert Gilmore  Drexel University, Published in 2007, 222 pages

Noncompact Harmonic Manifolds
Gerhard Knieper, Norbert Peyerimhoff  arXiv, Published in 2013, 84 pages

Tabletop: Analog Game Design
Greg Costikyan, Drew Davidson  , Published in 2011, 206 pages

High School Algebra
J.T. Crawford  The Macmillan Company, Published in 1916, 428 pages

Lecture Notes on Motivic Cohomology
Carlo Mazza, Vladimir Voevodsky, Charles Weibel  AMS, Published in 2005, 228 pages

Introductory Finite Difference Methods for PDEs
D. M. Causon, C. G. Mingham  BookBoon, Published in 2010, 144 pages

Differentiable Manifolds
Nigel Hitchin  , Published in 2003, 94 pages

Predicative Arithmetic
Edward Nelson  Princeton Univ Pr, Published in 1987, 201 pages

Fundamentals of High School Mathematics
Harold O. Rugg, John R. Clark  YonkersonHudson, N.Y., Published in 1918, 296 pages

Mathematics, Basic Math and Algebra
 Naval Education and Training, Published in 2003, 296 pages

Elementary Linear Algebra
Keith Matthews  University of Queensland, Published in 1998, 302 pages

Book of Proof
Richard Hammack  Virginia Commonwealth University, Published in 2009, 270 pages

Exact Sequences in the Algebraic Theory of Surgery
Andrew Ranicki  Princeton University Press, Published in 1981, 881 pages

Principles of Uncertainty
Joseph B. Kadane  Chapman and Hall/CRC, Published in 2011, 499 pages

Multivariable Advanced Calculus
Kenneth Kuttler  , Published in 2016, 450 pages

Proof in Mathematics: An Introduction
James Franklin, Albert Daoud  Kew Books, Published in 2011, 104 pages

Topology Without Tears
Sidney A. Morris  , Published in 2007, 373 pages

Statistical Tools for Economists
Daniel McFadden  University of California, Berkeley, Published in 2001

Scientific Computing
Jeffrey R. Chasnov  Harvey Mudd College, Published in 2013, 152 pages

The Hauptvermutung Book: A Collection of Papers on the Topology of Manifolds
A.A. Ranicki, et al,  Springer, Published in 1996, 194 pages

An elementary treatise on Fourier's series and spherical, cylindrical, and ellipsoidal harmonics
William Elwood Byerly  Ginn and company, Published in 1893, 309 pages

Bayesian Spectrum Analysis and Parameter Estimation
G. Larry Bretthorst  Springer, Published in 1988, 220 pages

Theory and Applications of Lattice Point Methods for Binomial Ideals
Ezra Miller  arXiv, Published in 2010, 57 pages

NonEuclidean Geometry: A Critical and Historical Study of its Development
Roberto Bonola  Open Court Publishing Company, Published in 1912, 292 pages

A Century of Mathematics in America
Peter Duren, Richard A. Askey  American Mathematical Society, Published in 1988

Integral Calculus
Leah EdelsteinKeshet  University of British Columbia, Published in 2010, 267 pages

Perturbation Theory of Dynamical Systems
Nils Berglund  arXiv, Published in 2001, 111 pages

The Art of Logic
Nuel Belnap  University of Pittsburgh, Published in 2009, 314 pages

Calculus Refresher
Paul Garrett  , Published in 2008, 78 pages

The Octonions
John C. Baez  University of California, Published in 2001, 56 pages

Spectral Theory of Partial Differential Equations
Richard S. Laugesen  arXiv, Published in 2012, 120 pages

Metalogic
Jan Wolenski  ESSLLI, Published in 2002, 35 pages

A Quick Review of Commutative Algebra
Sudhir R. Ghorpade  Indian Institute of Technology, Bombay, Published in 2000, 13 pages

Symplectic, Poisson, and Noncommutative Geometry
Tohru Eguchi, et al.  Cambridge University Press, Published in 2014, 290 pages

Linear Methods of Applied Mathematics
Evans M. Harrell II, James V. Herod  , Published in 2000

The Principles Of Mathematics
Bertrand Russell  W. W. Norton & Company, , 579 pages

Course of Analytical Geometry
Ruslan Sharipov  UFA, Published in 2011, 226 pages

Introduction to Algebraic Number Theory
William Stein  University of Washington, Published in 2005, 140 pages

Lectures on Topics in Algebraic Number Theory
Sudhir R. Ghorpade  Indian Institute of Technology, Bombay, Published in 2002, 83 pages

Multivector Differential Calculus
Eckhard Hitzer  arXiv, Published in 2013, 43 pages

A Short Account of the History of Mathematics
W. W. Rouse Ball  Dover Publications, Published in 1960, 466 pages

Linear algebra via exterior products
Sergei Winitzki  LudwigMaximilians University, Published in 2009, 82 pages

Optimization Algorithms: Methods and Applications
Ozgur Baskan (ed.)  InTech, Published in 2016, 322 pages

Algebraic Logic
H. Andreka, I. Nemeti, I. Sain  , Published in 2003, 129 pages

Ample Subvarieties of Algebraic Varieties
Robin Hartshorne  Springer, Published in 1970, 273 pages

Axiom: The Scientific Computation System
Richard D. Jenks, Robert S. Sutor  axiomdeveloper.org, Published in 2003, 1200 pages

Solid Geometry, with Problems and Applications
H. E. Slaught, N. J. Lennes  Allyn and Bacon, Published in 1919, 242 pages

A Topology Primer
Klaus Wirthmüller  Technische Universität Kaiserslautern, Published in 2002, 197 pages

Introduction to Probability, Statistics, and Random Processes
Hossein PishroNik  Kappa Research, LLC, Published in 2014, 744 pages

Elementary Number Theory
William Edwin Clark  University of South Florida, Published in 2002, 129 pages

Theory of the Integral
Stanislaw Saks  Polish Mathematical Society, Published in 1937, 347 pages

Practical Mathematics for Beginners
Frank Castle  Macmillan and co, Published in 1905, 366 pages

Lectures on a Method in the Theory of Exponential Sums
M. Jutila  Tata Institute of Fundamental Research, Published in 1987, 134 pages

Advanced Problems in Mathematics: Preparing for University
Stephen Siklos  Open Book Publishers, Published in 2016, 189 pages

Lectures on Discrete and Polyhedral Geometry
Igor Pak  UCLA, Published in 2008, 428 pages

Theory of Statistics
James E. Gentle  George Mason University, Published in 2012, 900 pages

Beginning and Intermediate Algebra
Tyler Wallace  Lulu.com, Published in 2010, 489 pages

A Course In Commutative Algebra
Robert B. Ash  University of Illinois, Published in 2006

Hilbert Space Methods for Partial Differential Equations
R. E. Showalter  Pitman, Published in 1994, 208 pages

Iterative Methods for Sparse Linear Systems
Yousef Saad  PWS, Published in 1996

Analytic Number Theory: A Tribute to Gauss and Dirichlet
William Duke, Yuri Tschinkel  American Mathematical Society, Published in 2007, 266 pages

nLinear Algebra of Type I and Its Applications
W. B. V. Kandasamy, F. Smarandache  InfoLearnQuest, Published in 2008, 120 pages

Algebraic and Geometric Methods in Enumerative Combinatorics
Federico Ardila  arXiv, Published in 2014, 143 pages

Functional and Structured Tensor Analysis for Engineers
R. M. Brannon  The University of Utah, Published in 2003, 323 pages

Problems with and Without ... Problems!
Florentin Smarandache  viXra, Published in 2011, 136 pages

Euclid's Elements of Geometry
J.L. Heiberg, R. Fitzpatrick  , Published in 2008, 545 pages

Comments and topics on Smarandache notions and problems
Kenichiro Kashihara  Erhus University Press, Published in 1996, 50 pages

A Course of Elementary Mathematics
John Radford Young  Wm. H. Allen, Published in 1862, 658 pages

Principles of Data Analysis
Cappella Archive  Prasenjit Saha, Published in 2003, 113 pages

Calculus III
Paul Dawkins  Lamar University, Published in 2011, 287 pages

An Introduction to Modular Forms
Henri Cohen  arXiv.org, Published in 2018, 58 pages

Basic Linear Algebra
Andrew Baker  University of Glasgow, Published in 2008, 73 pages

Experimental Design and Analysis
Howard J. Seltman  Carnegie Mellon University, Published in 2012, 428 pages

Lectures on the Algebraic Theory of Fields
K.G. Ramanathan  Tata Institute of Fundamental Research, Published in 1956, 228 pages

Introduction to Abstract Algebra
D. S. Malik, John N. Mordeson, M.K. Sen  Creighton University, Published in 2007, 276 pages

An introduction to Noncommutative Projective Geometry
D. Rogalski  arXiv, Published in 2014, 55 pages

Ricci Flow and the Poincare Conjecture
John Morgan, Gang Tian  American Mathematical Society, Published in 2007, 493 pages

Mathematical Foundations of Probability Theory
Gane Samb Lo  arXiv.org, Published in 2018, 378 pages

CK12 Algebra I
Andrew Gloag, Anne Gloag  CK12 Basic Algebra Concepts, Published in 2010, 825 pages

A ScrapBook of Elementary Mathematics
William F. White  The Open Court Publishing Company, Published in 1908, 234 pages

Trigonometry
Michael Corral  mecmath.net, Published in 2009, 174 pages

Lectures on Discrete Subgroups of Lie Groups
G.D. Mostow  Tata Institute of Fundamental Research, Published in 1969, 86 pages

Fundamental Concepts of Mathematics
Farshid Hajir  University of Massachusetts, Published in 2005, 69 pages

Projective Differential Geometry Of Curves And Surfaces
Ernest Preston Lane  The University Of Chicago Press, Published in 1932, 344 pages

Lectures on Differential Geometry
John Douglas Moore  University of California, Published in 2009, 263 pages

Probability Theory: The Logic of Science
E. T. Jaynes  Cambridge University Press, Published in 2002, 758 pages

Mathematical Methods for Economic Theory: a tutorial
Martin J. Osborne  University of Toronto, Published in 2007, 301 pages

Probability and Mathematical Statistics
Prasanna Sahoo  University of Louisville, Published in 2008, 703 pages

Manifolds: Current Research Areas
Paul Bracken (ed.)  InTech, Published in 2017, 158 pages

Set Theory
Gary Hardegree  UMass Amherst, Published in 2003

Lectures on Topics in Stochastic Differential Equations
Daniel W. Stroock  Tata Institute of Fundamental Research, Published in 1982, 93 pages

Combinatorial Group Theory
Charles F. Miller III  University of Melbourne, Published in 2004, 99 pages

Discrete Structures
Vladlen Koltun  Stanford University, Published in 2008, 89 pages

Manifolds of Differentiable Mappings
Peter W. Michor  Birkhauser, Published in 1980, 165 pages

Stability Analysis via Matrix Functions Method
A. A. Martynyuk  Bookboon, Published in 2013, 257 pages

KählerEinstein metrics: Old and New
Daniele Angella, Cristiano Spotti  arXiv.org, Published in 2017, 48 pages

Combinatory Analysis
Percy A. MacMahon  Cambridge University Press, Published in 1915, 612 pages

Abstract Algebra I
Marcel B. Finan  Arkansas Tech University, Published in 2004

Probabilistic Programming and Bayesian Methods for Hackers
Cameron DavidsonPilon  GitHub, Inc., Published in 2013

Real Analysis for Graduate Students: Measure and Integration Theory
Richard F. Bass  CreateSpace, Published in 2011, 206 pages

Fractals
 Wikibooks, Published in 2013

Projective Differential Geometry Old and New
V. Ovsienko, S. Tabachnikov  Cambridge University Press, Published in 2004, 281 pages

Coalgebras and Modal Logic
Alexander Kurz  ESSLLI, Published in 2002, 100 pages

Introduction to Numerical Methods and Matlab Programming for Engineers
Todd Young, Martin J. Mohlenkamp  Ohio University, Published in 2017, 182 pages

Difference Equations to Differential Equations  An introduction to calculus
Dan Sloughter  , Published in 2000, 599 pages

The Gamma Function
James Bonnar  viXra, Published in 2017, 163 pages

Introduction to Mathematical Philosophy
Bertrand Russell  University of Massachusetts Amherst, Published in 2009, 181 pages

Descriptive Set Theory
Yiannis N. Moschovakis  American Mathematical Society, Published in 2009, 516 pages

Fourier Series and Systems of Differential Equations and Eigenvalue Problems
Leif Mejlbro  BookBoon, Published in 2007, 125 pages

Greek Geometry from Thales to Euclid
George Johnston Allman  Dublin University Press, Published in 1877, 248 pages

Lectures on Commutative Algebra
Sudhir R. Ghorpade  Indian Institute of Technology, Bombay, Published in 2006, 64 pages

Introduction to Differential Topology
Uwe Kaiser  Boise State University, Published in 2006, 110 pages

Stochastic Analysis  Notes
I. F. Wilde  , Published in 2009, 103 pages

Advanced Algebra
Herbert E. Hawkes  Ginn and Company, Published in 1905, 314 pages

Isometrica: A Geometrical Introduction to Planar Crystallographic Groups
George Baloglou  , Published in 2007, 473 pages

Partial Differential Equations with Maple
Robert Piche, Keijo Ruohonen  Tampere University of Technology, Published in 1997, 131 pages

Noncommutative Geometry, Quantum Fields and Motives
Alain Connes, Matilde Marcolli  American Mathematical Society, Published in 2007, 705 pages

Notes on Operator Algebras
G. Jungman  Los Alamos National Laboratory, Published in 1999, 60 pages

Collaborative Statistics
Barbara Illowsky, Susan Dean  Illowsky Publising, Published in 2012, 728 pages

Lectures on Fibre Bundles and Differential Geometry
J.L. Koszul  Tata Institute of Fundamental Research, Published in 1960, 105 pages

Congruence Lattices of Finite Algebras
William DeMeo  arXiv, Published in 2012, 130 pages

Algebraic geometry and projective differential geometry
Joseph M. Landsberg  arXiv, Published in 1998, 70 pages

Statistics Beyond the Absolute Basics
Ivan Lowe  scientificlanguage.com, Published in 2018, 182 pages

Functors and Categories of Banach Spaces
Peter W. Michor  Springer, Published in 1978, 103 pages

The Elements of Solid Geometry
William C. Bartol  Leach, Shewell & Sanborn, Published in 1893, 112 pages

Statistical Inference for Everyone
Brian S Blais  Save The Broccoli Publishing, Published in 2014, 200 pages

Shadows of the Truth: Metamathematics of Elementary Mathematics
Alexandre Borovik  American Mathematical Society, Published in 2010, 293 pages

The Fourth Dimension
Charles Howard Hinton  S. Sonnenschein & Co., Published in 1906, 288 pages

Geometry of 2D Topological Field Theories
Boris Dubrovin  arXiv, Published in 1994, 204 pages

Hyperbolic Manifolds, Discrete Groups and Ergodic Theory
Curtis T. McMullen  Harvard University, Published in 2011, 118 pages

Graph Theory Lessons
Christopher P. Mawata  Math Cove, Published in 2018, 384 pages

Ten British Mathematicians
Alexander Macfarlane  , Published in 1916, 108 pages

Introductory Statistics Notes
Jamie DeCoster  University of Alabama, Published in 1998, 48 pages

Discrete Differential Geometry: An Applied Introduction
M. Desbrun, P. Schroeder, M. Wardetzky  Columbia University, Published in 2008, 103 pages

Inside Out: Inverse Problems and Applications
Gunther Uhlmann  Cambridge University Press, Published in 2003, 400 pages

Differential Topology
Bjorn Ian Dundas  Johns Hopkins University, Published in 2002, 183 pages

Linear Algebra
David Cherney, Tom Denton, Andrew Waldron  UC Davis, Published in 2013, 410 pages

Principles of Differential Geometry
Taha Sochi  viXra, Published in 2016, 161 pages

Category Theory Lecture Notes
Daniele Turi  University of Edinburgh, Published in 2001, 61 pages

Applied Analysis
J. Hunter, B. Nachtergaele  World Scientific Publishing Company, Published in 2005, 439 pages

Higher Algebra
Jacob Lurie  Harvard University, Published in 2017, 1166 pages

Temporal Networks
Petter Holme, Jari Saramäki  arXiv, Published in 2011, 25 pages

Spherical Harmonics in p Dimensions
Christopher Frye, Costas J. Efthimiou  arXiv, Published in 2012, 95 pages

Nonlinear Fourier Analysis
Terence Tao, Christoph Thiele  arXiv, Published in 2012, 98 pages

Dynamics in One Complex Variable
John Milnor  Princeton University Press, Published in 1991, 146 pages

Advanced HighSchool Mathematics
David B. Surowski  Kansas State University, Published in 2011, 435 pages

Invitation to Dynamical Systems
Edward R. Scheinerman  Prentice Hall College Div, Published in 2000, 384 pages

Introduction to Graphs
 Wikipedia, Published in 2014

Lectures on Geodesics in Riemannian Geometry
M. Berger  Tata Institute of Fundamental Research, Published in 1965, 317 pages

Introduction to the Numerical Integration of PDEs
B. Piette  University of Durham, Published in 2004, 89 pages

Multivariable and Vector Analysis
W W L Chen  Macquarie University, Published in 2008, 203 pages

Curves and Surfaces in Geometric Modeling: Theory and Algorithms
Jean Gallier  Morgan Kaufmann, Published in 1999, 502 pages

Continuous Groups Of Transformations
Luther Pfahler Eisenhart  Princeton University Press, Published in 1933, 319 pages

Advanced Algebra
John Redden  lardbucket.org, Published in 2014, 2094 pages

Topology
Curtis T. McMullen  Harvard University, Published in 2013, 90 pages

Mixed Motives
Marc Levine  American Mathematical Society, Published in 1998, 523 pages

Notes on Linear Algebra
Peter J. Cameron  Queen Mary, University of London, Published in 2008, 124 pages

Strange Attractors: Creating Patterns in Chaos
Julien C. Sprott  M & T Books, Published in 2000, 591 pages

Singularities of Transition Processes in Dynamical Systems
Alexander N. Gorban  American Mathematical Society, Published in 2004, 55 pages

Everything Maths: Grade 11 Mathematics
Neels van der Westhuizen, et al.  Siyavula, Published in 2012, 238 pages

Mirror Symmetry
Cumrun Vafa, Eric Zaslow  American Mathematical Society, Published in 2003, 950 pages

Mathematical Logic
Stephen G. Simpson  Pennsylvania State University, Published in 2013, 128 pages

Lectures on Cauchy Problem
Sigeru Mizohata  Tata Institute of Fundamental Research, Published in 1965, 191 pages

Advances in Discrete Differential Geometry
Alexander I. Bobenko (ed.)  Springer, Published in 2016, 439 pages

Nonlinear Parameter Estimation: An Integrated System in Basic
John C. Nash  Marcel Dekker Inc, Published in 1995, 493 pages

The Construction and Study of Certain Important Algebras
Claude Chevalley  The Mathematical Society Of Japan, Published in 1955, 80 pages

The AdamsNovikov Spectral Sequence and the Homotopy Groups of Spheres
Paul Goerss  Northwestern University, Published in 2007, 47 pages

Interacting Particle Systems
Stefan Grosskinsky  University of Warwick, Published in 2009, 56 pages

Everything you wanted to know about Data Analysis and Fitting
Peter Young  arXiv, Published in 2012, 55 pages

Foundations of Descriptive and Inferential Statistics
Henk van Elst  arXiv, Published in 2013, 144 pages

Differential Geometry Of Three Dimensions
C.E. Weatherburn  Cambridge University Press, Published in 1955, 281 pages

Introduction to Algebraic Geometry
Yuriy Drozd  , Published in 1999, 104 pages

Engineering Mathematics with Tables
M.A. Keasey, G.A. Kline, D.A. McIlhatten  The Blakiston company, Published in 1940, 376 pages

Applied Combinatorics
S. E. Payne  University of Colorado, Published in 2003, 216 pages

Introduction Probaility and Statistics
Muhammad ElTaha  University of Southern Maine, Published in 2003, 147 pages

CDBooK: Introduction to Vassiliev Knot invariants
S.Chmutov, S.Duzhin, J.Mostovoy  Ohio State Universit, Published in 2009, 460 pages

Lectures on Integrable Probability
Alexei Borodin, Vadim Gorin  arXiv, Published in 2012, 63 pages

Elementary Differential Equations with Boundary Value Problems
William F. Trench  Brooks Cole, Published in 2013, 807 pages

Foundations of Infinitesimal Calculus
H. Jerome Keisler  University of Wisconsin, Published in 2011, 213 pages

Lectures on Meromorphic Functions
W.K. Hayman  Tata Institue of Fundamental Research, Published in 1959, 119 pages

Mathematical Computation
Ian Craw  University of Aberdeen, Published in 2003, 156 pages

Functional Differential Geometry
Gerald Jay Sussman, Jack Wisdom  MIT, Published in 2005, 77 pages

Bernoulli Polynomials and Applications
Omran Kouba  arXiv, Published in 2013, 48 pages

Notes on Basic 3Manifold Topology
Allen Hatcher  , Published in 2000, 61 pages

Readerfriendly Introduction to the Measure Theory
Vasily Nekrasov  Yetanotherquant.de, Published in 2009, 117 pages

Practical Mathematics
Cargill Gilston Knott  Chambers, Published in 1914, 652 pages

Contact Topology
George Torres, Robert Gompf  University of Texas at Austin, Published in 2017, 51 pages

Mathematical Philosophy: A Study of Fate and Freedom
Cassius Jackson Keyser  E.P. Dutton & company, Published in 1922, 490 pages

Lectures on Deformations of Singularities
Michael Artin  Tata Institute of Fundamental Research, Published in 1976, 110 pages

Lectures On Old And New Results On Algebraic Curves
P. Samuel  Tata Institute Of Fundamental Research, Published in 1966, 99 pages

Holonomy Groups in Riemannian Geometry
Andrew Clarke, Bianca Santoro  arXiv, Published in 2012, 124 pages

An Elementary Introduction to Group Theory
M. E. Charkani  AMS, Published in 2018, 47 pages

Notes on Discrete Mathematics
Miguel A. Lerma  , Published in 2005, 154 pages

Linear Systems Theory and Introductory Algebraic Geometry
Robert Hermann  Math Sci Press, Published in 1974, 282 pages

Chebyshev and Fourier Spectral Methods
John P. Boyd  Dover Publications, Published in 2001, 611 pages

Lectures on Entire Functions
B. Ya. Levin  American Mathematical Society, Published in 1996, 265 pages

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

Lectures on the Theory of Algebraic Functions of One Variable
M. Deuring  Tata Institute of Fundamental Research, Published in 1959, 154 pages

The Canterbury Puzzles and Other Curious Problems
Henry Ernest Dudeney  Nelson, Published in 1919, 257 pages

Very Basic Noncommutative Geometry
Masoud Khalkhali  University of Western Ontario, Published in 2004, 104 pages

Primary Mathematics
 Wikibooks, Published in 2012

Probability, Geometry and Integrable Systems
Mark Pinsky, Bjorn Birnir  Cambridge University Press, Published in 2007, 428 pages

Lectures on Logarithmic Algebraic Geometry
Arthur Ogus  University of California, Berkeley, Published in 2006, 255 pages

Clifford Algebra, Geometric Algebra, and Applications
Douglas Lundholm, Lars Svensson  arXiv, Published in 2009, 117 pages

Categorical Homotopy Theory
Emily Riehl  Cambridge University Press, Published in 2014, 292 pages

Topics in the Theory of Quadratic Residues
Steve Wright  arXiv, Published in 2014, 160 pages

A set of new Smarandache functions, sequences and conjectures in number theory
Felice Russo  American Research Press, Published in 2000, 114 pages

Determinants and Matrices
R. Kochendörfer  Teubner, Published in 1961

Causal Inference
Miguel A. Hernan, James M. Robins  Chapman & Hall/CRC, Published in 2015, 352 pages

Numerical Stability
M.N. Spijker  Leiden University, Published in 1998, 71 pages

Data Assimilation: A Mathematical Introduction
K.J.H. Law, A.M. Stuart, K.C. Zygalakis  arXiv.org, Published in 2015, 158 pages

Mathematical Analysis I
Elias Zakon  The Trillia Group, Published in 2004, 367 pages

Matrices
Shmuel Friedland  University of Illinois at Chicago, Published in 2010, 437 pages

Analysis of Puzzles
Umesh Nair  , Published in 2006, 88 pages

Combinatorial Optimization: Exact and Approximate Algorithms
Luca Trevisan  Stanford University, Published in 2011, 139 pages

Logics of Time and Computation
Robert Goldblatt  Center for the Study of Language, Published in 1992, 200 pages

The Craft of Fractional Modelling in Science and Engineering
Jordan Hristov (ed.)  MDPI AG, Published in 2018, 140 pages

Unfolding the Labyrinth: Open Problems in Mathematics, Physics, Astrophysics
Florentin Smarandache, at al.  arXiv, Published in 2006, 139 pages

A Short Course on Approximation Theory
N. L. Carothers  Bowling Green State University, Published in 2009, 159 pages

Foliations and the Geometry of 3manifolds
Danny Calegari  Oxford University Press, Published in 2007, 371 pages

Applied Mathematics by Example
Jeremy Pickles  BookBoon, Published in 2010, 164 pages

New Perspectives in Algebraic Combinatorics
Louis J. Billera, at al.  Cambridge University Press, Published in 1999, 345 pages

Practical Plane and Solid Geometry for Advanced Students
J. Harrison, G.A. Baxandall  Macmillan, Published in 1899, 584 pages

Intro to Abstract Algebra
Paul Garrett  , Published in 1998, 200 pages

Several Complex Variables
Michael Schneider, YumTong Siu  Cambridge University Press, Published in 1999, 564 pages

A Minimum of Stochastics for Scientists
Noel Corngold  Caltech, Published in 2009, 77 pages

A Course Of Mathematical Analysis
Shanti Narayan  S.Chand And Company, Published in 1962, 494 pages

Notes on Differential Geometry and Lie Groups
Jean Gallier  University of Pennsylvania, Published in 2010

Hack, Hack, Who's There? A Gentle Introduction to Model Theory
David Reid  Smashwords, Published in 2016, 273 pages

Applied Multivariate Statistical Analysis
Wolfgang K. Hardle, Leopold Simar  Springer, Published in 2003, 488 pages

Introduction to the Basics of Heegaard Floer Homology
Bijan Sahamie  arXiv, Published in 2010, 71 pages

Six Septembers: Mathematics for the Humanist
Patrick Juola, Stephen Ramsay  Zea Books, Published in 2017, 433 pages

Computational Statistics
James E. Gentle  Springer, Published in 2009, 729 pages

Applied Finite Mathematics
Rupinder Sekhon  Connexions, Published in 2011, 347 pages

Diffeomorphisms of Elliptic 3Manifolds
S. Hong, J. Kalliongis, D. McCullough, J. H. Rubinstein  arXiv, Published in 2011, 185 pages

An Introduction to Geometry
Wong Yan Loi  National University of Singapore, Published in 2009, 136 pages

The Essence of Mathematics Through Elementary Problems
Alexandre Borovik, Tony Gardiner  Open Book Publishers, Published in 2019, 400 pages

Computer analysis of number sequences
Henry Ibstedt  American Research Press, Published in 1998, 86 pages

Seminar on Triples and Categorical Homology Theory
B. Eckmann  Springer, Published in 1969, 304 pages

An Introduction to Contemporary Mathematics
John Hutchinson  Australian National University, Published in 2010, 295 pages

Introduction to Matrix Algebra
Autar K Kaw  University of South Florida, Published in 2002, 192 pages

The Calculus
William V. Smith  Brigham Young University, Published in 2001, 144 pages

How We Got From There to Here: A Story of Real Analysis
Robert Rogers, Eugene Boman  Open SUNY Textbooks, Published in 2013, 210 pages

Statistics 1
Keijo Ruohonen  Tampere University of Technology, Published in 2011, 97 pages

Introduction to Symplectic and Hamiltonian Geometry
Ana Cannas da Silva  , Published in 2007, 158 pages

From Dmodules to Deformation Quantization Modules
Pierre Schapira  UPMC, Published in 2012, 89 pages

Inverse Problem Theory and Methods for Model Parameter Estimation
Albert Tarantola  SIAM, Published in 2004, 358 pages

Secondorder Ordinary Differential Equations
R.S. Johnson  Bookboon, Published in 2012, 181 pages

Statistics for Business and Economics
Marcelo Fernandes  BookBoon, Published in 2009, 150 pages

Bayesian Networks: Advances and Novel Applications
Douglas McNair (ed.)  IntechOpen, Published in 2019, 256 pages

Categories and Modules
Takahiro Kato  viXra.org, Published in 2015, 323 pages

High School Mathematics Extensions
Zhuo Jia Dai, Martin Warmer, Tom Lam  Wikibooks, Published in 2008, 250 pages

Around the Boundary of Complex Dynamics
Roland K. W. Roeder  arXiv, Published in 2015, 56 pages

Mathematics and Group Theory in Music
Athanase Papadopoulos  arXiv, Published in 2014, 33 pages

Classical Algebraic Geometry: A Modern View
Igor V. Dolgachev  Cambridge University Press, Published in 2012, 721 pages

Higher Elementary Geometry
Venugopal  , Published in 1958, 135 pages

Graduate Algebra
Leonard Evens  Northwestern University, Published in 1999, 160 pages

Conformal Fractals: Ergodic Theory Methods
F. Przytycki, M. Urbanski  Cambridge University Press, Published in 2009, 362 pages

A First Course in Linear Algebra
Robert A. Beezer  University of Puget Sound, Published in 2010, 1035 pages

Arimaa
 Wikibooks, Published in 2011

ModelTheoretic Logics
J. Barwise, S. Feferman  Springer, Published in 1985, 893 pages

Dynamic Programming and Bayesian Inference: Concepts and Applications
Mohammad Saber Fallah Nezhad (ed.)  InTech, Published in 2014, 164 pages

Axiomatic Set Theory
Michael Meyling  , Published in 2011, 36 pages

Numerical Analysis I
Mark Embree  Rice University, Published in 2012, 207 pages

Lectures on Representations of Complex SemiSimple Lie Groups
Thomas J. Enright  Tata Institute of Fundamental Research, Published in 1981, 94 pages

Advanced Topics in Probability
S.R.S. Varadhan  New York University, Published in 2011, 203 pages

The Smarandache Function
C. Dumitrescu, V. Seleacu  Erhus University Press, Published in 1996, 137 pages

Ordinary Differential Equations
Stephen Wiggins  University of Bristol, Published in 2017, 146 pages

On Advanced Analytic Number Theory
C.L. Siegel  Tata Institute of Fundamental Research, Published in 1961, 241 pages

Complex Analysis on Riemann Surfaces
Curtis McMullen  Harvard University, Published in 2005, 89 pages

Matrix Analysis
Steven J Cox  Rice University, Published in 2012, 98 pages

A First Course in Elementary Differential Equations
Marcel B. Finan  Arkansas Tech University, Published in 2006, 213 pages

A Primer of Mathematical Writing
Steven G. Krantz  arXiv.org, Published in 2016, 276 pages

Optimization and Dynamical Systems
U. Helmke, J. B. Moore  Springer, Published in 1996, 414 pages

An Introduction to the Algebra of Quantics
E.B. Elliott  The Clarendon Press, Published in 1913, 444 pages

HigherDimensional Categories: an illustrated guide book
Eugenia Cheng, Aaron Lauda  University of Sheffield, Published in 2004, 182 pages

First Steps in Numerical Analysis
R. Hosking, S. Joe, D. Joyce, and J. Turner  , Published in 1998, 338 pages

Metrics on the Phase Space and NonSelfadjoint PseudoDifferential Operators
Nicolas Lerner  Birkhäuser, Published in 2009

Statistics: Methods and Applications
Thomas Hill, Paul Lewicki  StatSoft, Inc., Published in 2005, 800 pages

Learning Statistics with R
Daniel Navarro  University of Adelaide, Published in 2014, 564 pages

Lectures on Topics In The Theory of Infinite Groups
B.H. Neumann  Tata Institute of Fundamental Research, Published in 1960, 200 pages

Lecture Notes on Differentiable Manifolds
Jie Wu  National University of Singapore, Published in 2004, 78 pages

Probability Theory
S. R. S. Varadhan  New York University, Published in 2000, 300 pages

Essential Mathematics
Franco Vivaldi  , Published in 2006, 74 pages

Calculus: Early Transcendentals
David Guichard  Lyryx, Published in 2016, 656 pages

The Elements of Analytic Geometry
Percey F. Smith, A. S. Gale  Ginn & company, Published in 1904, 450 pages

Lectures on Expansion Techniques In Algebraic Geometry
S.S. Abhyankar  Tata Institute Of Fundamental Research, Published in 1977, 169 pages

An Introduction to Combinatorics and Graph Theory
David Guichard  Whitman College, Published in 2017, 153 pages

Notes on Classical Groups
Peter J. Cameron  Queen Mary and Westfield College, Published in 2000, 96 pages

An Introduction to Riemannian Geometry
Sigmundur Gudmundsson  Lund University, Published in 2010, 106 pages

Notes on Symmetric Spaces
Jonathan Holland, Bogdan Ion  arXiv, Published in 2012, 109 pages

Yet Another Calculus Text
Dan Sloughter  , Published in 2007, 147 pages

A History of Greek Mathematics
Thomas Little Heath  Clarendon Press, Published in 1921, 1084 pages

Homotopy Theories and Model Categories
W. G. Dwyer, J. Spalinski  University of Notre Dame, Published in 1995, 56 pages

Intuitive Infinitesimal Calculus
Viktor Blasjo  Intellectual Mathematics, Published in 2015, 98 pages

Probability and Statistics
 UCLA, Published in 2012

Categorical Geometry
Zhaohua Luo  , Published in 1998

Advanced Stochastic Processes
Jan A. Van Casteren  Bookboon, Published in 2013, 404 pages

An informal introduction to the ideas and concepts of noncommutative geometry
Thierry Masson  arXiv, Published in 2006, 56 pages

Elementary Differential Equations
William F. Trench  Brooks Cole, Published in 2001, 663 pages

Fields and Galois Theory
J. S. Milne  , Published in 2008, 111 pages

Natural Product Xn on matrices
W. B. Vasantha Kandasamy, Florentin Smarandache  arXiv, Published in 2012, 342 pages

Elementary Linear Algebra
Kenneth Kuttler  The Saylor Foundation, Published in 2012, 433 pages

Generic Polynomials: Constructive Aspects of the Inverse Galois Problem
C. U. Jensen, A. Ledet, N. Yui  Cambridge University Press, Published in 2002, 268 pages

An Introductory Course Of Mathematical Analysis
Charles Walmsley  Cambridge University Press, Published in 1920, 268 pages

Computational and Algorithmic Linear Algebra and nDimensional Geometry
Katta G. Murty  , Published in 2001, 554 pages

Introduction to Tensor Calculus
Kees Dullemond, Kasper Peeters  University of Heidelberg, Published in 2010, 53 pages

On Lie Algebras Of Prime Characteristic
George B. Seligman  American Mathematical Society, Published in 1956, 93 pages

Galois Groups and Fundamental Groups
David Meredith  San Francisco State University, Published in 1999, 89 pages

Logic For Everyone
Robert A. Herrmann  , Published in 2006, 124 pages

Sets, Relations, Functions
Ivo Düntsch, Günther Gediga  Methodos Publishers (UK), Published in 2000, 55 pages

Special Set Linear Algebra and Special Set Fuzzy Linear Algebra
W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral  CuArt, Published in 2009, 469 pages

Algebraic Methods
F. Oggier  Nanyang Technological University, Published in 2010, 129 pages

Fredholm Operators and Spectral Flow
Nils Waterstraat  arXiv, Published in 2016, 61 pages

Handbook of Mathematics for Engineers
E. V. Huntington, L. A. Fischer  McGraw Hill, Published in 1918, 212 pages

The Philosophy of Mathematics
Auguste Comte  Harper & brothers, Published in 1851, 276 pages

An Introduction to Nonassociative Algebras
Richard D. Schafer  Project Gutenberg, Published in 2008, 81 pages

Differential Geometry Course Notes
Richard Koch  University of Oregon, Published in 2005, 188 pages

Seeing Theory: A visual introduction to probability and statistics
T. Devlin, J. Guo, D. Kunin, D. Xiang  Brown University, Published in 2018, 66 pages

Algebra for Beginners
James Loudon  Copp, Clark & Co, Published in 1876, 172 pages

Bayesian Methods for Statistical Analysis
Borek Puza  ANU Press, Published in 2015, 697 pages

Lectures on Lie Groups and Representations of Locally Compact Groups
F. Bruhat  Tata Institute of Fundamental Research, Published in 1958, 140 pages

Introduction to Randomness and Statistics
Alexander K. Hartmann  arXiv, Published in 2009, 95 pages

Intermediate Maths for Chemists
J. E. Parker  Bookboon, Published in 2013, 106 pages

Tight and Taut Submanifolds
Thomas E. Cecil, Shiingshen Chern  Cambridge University Press, Published in 1997, 349 pages

First Semester in Numerical Analysis with Julia
Giray Ökten  Florida State University, Published in 2019, 214 pages

The Mathematics of Investment
William L.Hart  D.C Heath and Company, Published in 1924, 321 pages

Elements of Group Theory
F. J. Yndurain  arXiv, Published in 2007, 65 pages

Algorithmic Graph Theory
David Joyner, Minh Van Nguyen, Nathann Cohen  Google Code, Published in 2010, 105 pages

Discrete Mathematics: An Open Introduction
Oscar Levin  University of Northern Colorado, Published in 2017, 345 pages

Elementary Number Theory
W W L Chen  Macquarie University, Published in 2003, 98 pages

The Kbook: An introduction to algebraic Ktheory
Charles Weibel  Rutgers, Published in 2010

Shape Analysis, Lebesgue Integration and Absolute Continuity Connections
Javier Bernal  arXiv.org, Published in 2019, 82 pages

Extracting Information from Random Data
Pawel J. Szablowski  arXiv, Published in 2016, 167 pages

Euclidean Plane and Its Relatives
Anton Petrunin  , Published in 2017, 201 pages

Vedic Mathematics
W. B. Kandasamy, F. Smarandache  Automaton, Published in 2006, 220 pages

Ordinary Differential Equations
Wong Yan Loi  National University of Singapore, Published in 2013, 121 pages

Statistics
Philip B. Stark  University of California, Berkeley, Published in 2011

Optimization Models For Decision Making
Katta G. Murty  Springer, Published in 2010, 482 pages

Differential Topology and Morse Theory
Dirk Schuetz  University of Sheffield, Published in 2009, 96 pages

The General Theory of Dirichlet's Series
G.H. Hardy, Marcel Riesz  Cambridge University Press, Published in 1915, 95 pages

Differential Equations
H. B. Phillips  John Wiley & Sons, Published in 1922, 84 pages

Basic Math Quick Reference Handbook
Peter J. Mitas  Quick Reference Handbooks, Published in 2009, 85 pages

Notes on Galois Theory
Mark Reeder  Boston College, Published in 2012, 66 pages

Statistics for Health, Life and Social Sciences
Denis Anthony  BookBoon, Published in 2011, 292 pages

Introduction To Finite Mathematics
J. G. Kemeny, J. L. Snell, G. L. Thompson  PrenticeHall, Published in 1974

Multivariable Calculus
George Cain, James Herod  , Published in 1997

How To Write Proofs
Larry W. Cusick  California State University, Fresno, Published in 2009

Precalculus: An Investigation of Functions
David Lippman, Melonie Rasmussen  Lulu.com, Published in 2011, 568 pages

Conic Sections Treated Geometrically
W. H. Besant  George Bell and Sons, Published in 1895, 367 pages

Commutator Theory for Congruence Modular Varieties
Ralph Freese, Ralph McKenzie  Cambridge University Press, Published in 1987, 174 pages

A First Course in Complex Analysis
M. Beck, G. Marchesi, D. Pixton  San Francisco State University, Published in 2012, 215 pages

Abelian Varieties
J. S. Milne  , Published in 2008, 172 pages

CK12 Single Variable Calculus
R. Almukkahal, V. Cifarelli, C. Fan, L. Jarvis  CK12 Foundation, Published in 2009, 457 pages

A Tour of Triangle Geometry
Paul Yiu  Florida Atlantic University, Published in 2005, 52 pages

Engineering Statistics Handbook
 NIST/SEMATECH, Published in 2003

Geometry of Four Dimensions
Parker Manning Henry  The MacMillan Company, Published in 1914, 378 pages

A Second Semester of Linear Algebra
S. E. Payne  University of Colorado Denver, Published in 2009, 236 pages

Methods for Finding Zeros in Polynomials
Leif Mejlbro  BookBoon, Published in 2011, 122 pages

Algorithmic Number Theory
J.P. Buhler, P. Stevenhagen  Cambridge University Press, Published in 2008, 662 pages

Elementary College Geometry
Henry Africk  CUNY Academic Works, Published in 2013, 376 pages

Fractal Analysis
SidAli Ouadfeul (ed.)  InTech, Published in 2019, 312 pages

The Basics of Financial Mathematics
Richard F. Bass  , Published in 2003, 106 pages

Calculus II
Paul Dawkins  Lamar University, Published in 2011, 380 pages

NonEuclidean Geometry
Henry Manning  Ginn and Company, Published in 1901, 93 pages

Introduction to Differential Geometry and General Relativity
Stefan Waner  , Published in 2005, 138 pages

Applied Stochastic Processes in Science and Engineering
Matt Scott  University of Waterloo, Published in 2013, 316 pages

Set Linear Algebra and Set Fuzzy Linear Algebra
W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral  InfoLearnQuest, Published in 2008, 345 pages

Linear Algebra: A Course for Physicists and Engineers
Arak Mathai, Hans J. Haubold  De Gruyter Open, Published in 2017, 450 pages

Gauge Theory for Fiber Bundles
Peter W. Michor  Universitaet Wien, Published in 1991, 106 pages

Numerical Analysis: Theory and Application
Jan Awrejcewicz  InTech, Published in 2011, 626 pages

The Haskell Road to Logic, Maths and Programming
Kees Doets, Jan van Eijck  College Publications, Published in 2004, 449 pages

Interval Groupoids
W. B. V. Kandasamy, F. Smarandache, M. K. Chetry  arXiv, Published in 2010, 240 pages

A. N. Whitehead's Geometric Algebra
Stephen Blake  , Published in 2005, 280 pages

Lie Algebras
Shlomo Sternberg  , Published in 2004, 198 pages

Introductory Treatise On Lie's Theory Of Finite Continuous Transformation Groups
John Edward Campbell  Oxford Clarendon Press, Published in 1903, 460 pages

Lectures on Complex Analytic Manifolds
L. Schwartz  Tata Institute of Fundamental Research, Published in 1955, 163 pages

Geometric Wave Equations
Stefan Waldmann  arXiv, Published in 2012, 279 pages

Plane Geometry
George Wentworth, David E. Smith  Ginn and Company, Published in 1913, 304 pages

Mathematical Discovery
A.M. Bruckner, B.S. Thomson, J.B. Bruckner  ClassicalRealAnalysis.com, Published in 2011, 267 pages

Calculus Volume 3
 OpenStax, Published in 2016, 1032 pages

The Chaos Hypertextbook
Glenn Elert  , Published in 2007

A First Course in Ordinary Differential Equations
Norbert Euler  Bookboon, Published in 2015, 232 pages

First Course in Statistics
D Caradog Jones  G Bell, Published in 1921, 288 pages

forall x: An Introduction to Formal Logic
P.D. Magnus  , Published in 2008, 160 pages

Introduction to Lie Groups, Adjoint Action and Some Generalizations
Marcos M. Alexandrino, Renato G. Bettiol  arXiv, Published in 2010, 129 pages

Trigonometry Notes
Steven Sy  Michigan State University, Published in 2008, 448 pages

A Semester Course in Trigonometry
Marcel B. Finan  Arkansas Tech University, Published in 2003, 264 pages

Solving PDEs in Python
Hans Petter Langtangen, Anders Logg  Springer, Published in 2017, 148 pages

Explaining Logarithms
Dan Umbarger  Brown Books Publishing Group, Published in 2006, 112 pages

A Second Course in Mathematics Concepts for Elementary Teachers
Marcel B. Finan  Arkansas Tech University, Published in 2006, 468 pages

An Introduction to Partial Differential Equations
Per Kristen Jakobsen  arXiv.org, Published in 2019, 226 pages

CK12 Basic Probability and Statistics: A Short Course
Brenda Meery  CK12.org, Published in 2010, 201 pages

Knot Invariants and Higher Representation Theory
Ben Webster  arXiv, Published in 2013, 87 pages

Lectures on Shimura Varieties
A. Genestier, B.C. Ngo  , Published in 2006, 50 pages

Natural Operations in Differential Geometry
Ivan Kolar, Peter W. Michor, Jan Slovak  Springer, Published in 1993, 437 pages

Dynamical Systems
Shlomo Sternberg  OER Commons, Published in 2000, 151 pages

Abstract Algebra: The Basic Graduate Year
Robert B. Ash  , Published in 2002

Elementary Mathematical Analysis
J.W. Young, F.M. Morgan  The Macmillan Company, Published in 1917, 586 pages

Probability for Finance
Patrick Roger  BookBoon, Published in 2010, 115 pages

Rotations of Vectors Via Geometric Algebra
James A. Smith  viXra, Published in 2016, 76 pages

Recreational Mathematics
 Wikipedia, Published in 2014

Proof, Sets, and Logic
M. Randall Holmes  Boise State University, Published in 2009, 207 pages

Geometry with an Introduction to Cosmic Topology
Mike Hitchman  , Published in 2017, 177 pages

Lectures on Semigroup Theory and its Application to Cauchy's Problem in Partial Differential Equations
K. Yosida  Tata Institute of Fundamental Research, Published in 1957, 160 pages

A Spiral Workbook for Discrete Mathematics
Harris Kwong  Open SUNY Textbooks, Published in 2015, 307 pages

Introduction To Algebraical Geometry
A. Clement Jones  Oxford University Press, Published in 1912, 558 pages

Stacks Project
Johan de Jong, et al.  , Published in 2012, 3428 pages

Collections of Problems on Smarandache Notions
Charles Ashbacher  Erhus University Press, Published in 1996, 75 pages

Lectures On Galois Cohomology of Classical Groups
M. Kneser  Tata Institute of Fundamental Research, Published in 1969, 212 pages

Engineering Mathematics: YouTube Workbook
Christopher C. Tisdell  BookBoon, Published in 2012, 114 pages

A Second Course in Elementary Ordinary Differential Equations
Marcel B. Finan  Arkansas Tech University, Published in 2006, 201 pages

A Probability Course for the Actuaries
Marcel B. Finan  Arkansas Tech University, Published in 2011, 517 pages

APEX Calculus
Gregory Hartman, et al.  APEXcalculus.com, Published in 2015, 874 pages

Ordinary Differential Equations: A Systems Approach
Bruce P. Conrad  , Published in 2010, 1125 pages

Introduction to Vectors
Christopher C. Tisdell  Bookboon, Published in 2014, 68 pages

Categories and Homological Algebra
Pierre Schapira  UPMC, Published in 2011, 125 pages

Functions of a Complex Variable
Thomas S. Fiske  John Wiley & sons, Published in 1907, 122 pages

Discrete Mathematics
W W L Chen  Macquarie University, Published in 2008, 125 pages

Topics in topology: The signature theorem and some of its applications
Liviu I. Nicolaescu  University of Notre Dame, Published in 2008, 159 pages

Applied Mathematical Programming Using Algebraic Systems
Bruce A. McCarl, Thomas H. Spreen  Texas A&M University, Published in 2011, 567 pages

Stats without Tears
Stan Brown  BrownMath.com, Published in 2016, 243 pages

18 Lectures on KTheory
Ioannis P. Zois  arXiv, Published in 2010, 137 pages

Magic Squares and Cubes
W. S. Andrews  Open Court Publishing Company, Published in 1917, 428 pages

Dynamical Systems and Chaos
Evans M. Harrell II  , Published in 2000

Topology
David Wilkins  Trinity College, Dublin, Published in 2001

Medians and Means in Riemannian Geometry: Existence, Uniqueness and Computation
M. Arnaudon, F. Barbaresco, L. Yang  arXiv, Published in 2011, 48 pages

Elementary Practical Mathematics
John Perry  The Macmillan Company, Published in 1913, 364 pages

Introduction to Dynamical Systems: A Handson Approach with Maxima
Jaime E. Villate  , Published in 2006, 43 pages

Introduction to Analytic Number Theory
A.J. Hildebrand  University of Illinois, Published in 2006, 197 pages

Random Differential Equations in Scientific Computing
Tobias Neckel, Florian Rupp  De Gruyter Open, Published in 2013, 650 pages

Statistics Done Wrong
Alex Reinhart  refsmmat.com, Published in 2013, 437 pages

Convex Optimization: Algorithms and Complexity
Sebastien Bubeck  arXiv.org, Published in 2015, 130 pages

Algebraic and Geometric Topology
Andrew Ranicki, Norman Levitt, Frank Quinn  Springer, Published in 1985, 436 pages

Class Field Theory
J. S. Milne  , Published in 2008, 287 pages

Commutative Algebra
 Wikibooks, Published in 2016, 204 pages

Tensor Analysis
Edward Nelson  Princeton Univ Pr, Published in 1974, 138 pages

Basic Calculus Refresher
Ismor Fischer  University of Wisconsin, Published in 2008, 21 pages

Elementary Geometry: Practical and Theoretical
C. Godfrey, A. W. Siddons  Cambridge University Press, Published in 1919, 438 pages

Linear Algebra, Infinite Dimensions, and Maple
James V. Herod  Georgia Tech, Published in 1997

Topology of Numbers
Allen Hatcher  Cornell University, Published in 2014, 122 pages

The Philosophy of Mathematics
Albert Taylor Bledsoe  J.B. Lippincott & Co, Published in 1868, 248 pages

Differential and Integral Equations: Boundary Value Problems and Adjoints
S. Schwabik, M. Tvrdy, O. Vejvoda  Academia Praha, Published in 1979, 246 pages

Probability, Statistics and Stochastic Processes
Cosma Rohilla Shalizi  , Published in 2001, 71 pages

Linear Algebra
W W L Chen  Macquarie University, Published in 2008, 221 pages

Hopf Algebras in General and in Combinatorial Physics: a practical introduction
G.H.E. Duchamp, et al.  arXiv, Published in 2008, 40 pages

Language, Proof and Logic
Jon Barwise, John Etchemendy  Center for the Study of Language, Published in 2011, 620 pages

Vector Analysis Notes
Matthew Hutton  matthewhutton.com, Published in 2006, 63 pages

Lectures on Stochastic Flows and Applications
H. Kunita  Tata Institute Of Fundamental Research, Published in 1986, 130 pages