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.

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

Differential Geometry
Balazs Csikos  Eötvös Loránd University, Published in 2010, 123 pages

The Theory of Lie Derivatives and Its Applications
Kentaro Yano  North Holland Publishing Co., Published in 1955, 321 pages

Natural Topology
Frank Waaldijk  arXiv, Published in 2012, 174 pages

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

Lectures in Basic Computational Numerical Analysis
James M. McDonough  University of Kentucky, Published in 2001, 166 pages

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

Introduction to Statistical Thinking
Benjamin Yakir  The Hebrew University of Jerusalem, Published in 2011, 324 pages

Representation Theory of Compact Groups
Michael Ruzhansky, Ville Turunen  Aalto TKK, Published in 2008, 135 pages

An Introduction to Real Analysis
John K. Hunter  University of California Davis, Published in 2014, 305 pages

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

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

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

Riemannian Submanifolds: A Survey
BangYen Chen  arXiv, Published in 2013, 272 pages

A ProblemSolving Approach to College Algebra
Marcel B. Finan  Arkansas Tech University, Published in 2002, 92 pages

Manifold Theory
Peter Petersen  UCLA, Published in 2010, 77 pages

Lectures on Field Theory and Ramification Theory
Sudhir R. Ghorpade  Indian Institute of Technology, Bombay, Published in 2008, 36 pages

Geometry of Surfaces
Nigel Hitchin  , Published in 2013, 101 pages

Super Special Codes using Super Matrices
W.B.V. Kandasamy, F. Smarandache, K.Ilanthenral  arXiv, Published in 2010, 161 pages

Why are Braids Orderable?
Patrick Dehornoy, at al.  , Published in 2010, 206 pages

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

Linear Algebra: Theorems and Applications
Hassan Abid Yasser (ed.)  InTech, Published in 2012, 250 pages

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

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

Smarandache Semigroups
W. B. Vasantha Kandasamy  American Research Press, Published in 2002, 95 pages

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

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

Graph Theory: Advanced Algorithms and Applications
Beril Sirmacek (ed.)  InTech, Published in 2018, 196 pages

CK12 Geometry
V. Cifarelli, A. Gloag, D. Greenberg, J. Sconyers, B. Zahner  CK12 Foundation, Published in 2009, 810 pages

Groups as Graphs
W. B. V. Kandasamy, F. Smarandache  CuArt, Published in 2009, 170 pages

The Modern Geometry of the Triangle
William Gallatly  F. Hodgson, Published in 1914, 126 pages

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

Abelian Categories: an Introduction to the Theory of Functors
Peter Freyd  Harper and Row, Published in 1964, 192 pages

Monotone Dynamical Systems
M.W. Hirsch, Hal Smith  , Published in 2004, 136 pages

Vector Math for 3D Computer Graphics
Bradley Kjell  Central Connecticut State University, Published in 2003

Unsolved Problems in Virtual Knot Theory and Combinatorial Knot Theory
R. Fenn, D.P. Ilyutko, L.H. Kauffman, V.O. Manturov  arXiv, Published in 2014, 66 pages

Fractals
 Wikibooks, Published in 2013

Numerical Methods for Large Eigenvalue Problems
Yousef Saad  SIAM, Published in 2011, 285 pages

Manifolds and Differential Forms
Reyer Sjamaar  Cornell University, Published in 2017, 171 pages

Elements of Applied Mathematics
Cobb Herbert E.  Ginn and Company, Published in 1911, 292 pages

Open Trigonometry: Basic to Advanced
 Wikibooks, Published in 2014, 51 pages

Circulants
Alun Wynjones  , Published in 2008, 149 pages

Valuations and Hyperbolicity in Dynamics
Thomas Ward  University of East Anglia, Published in 2001, 58 pages

A Course in Combinatorial Optimization
Alexander Schrijver  University of Amsterdam, Published in 2012, 221 pages

Games of No Chance 3
Michael H. Albert, Richard J. Nowakowski  Cambridge University Press, Published in 2009, 586 pages

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

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

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

Harmonic Analysis
Russell Brown  University of Kentucky, Published in 2009, 191 pages

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

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

Quantitative Analysis: Algebra with a Business Perspective
Donna M. Wacha  Bookboon, Published in 2013, 303 pages

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

A First Course of Partial Differential Equations in Physical Sciences and Engineering
Marcel B. Finan  Arkansas Tech University, Published in 2009, 285 pages

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

Mathematical Exercises for Home Work
A.T. Richardson  Macmillan and co., Published in 1892, 364 pages

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

Lectures on Partial Differential Equations
G.B. Folland  Tata Institute of Fundamental Research, Published in 1983, 145 pages

Algebraic Topology
Allen Hatcher  Cambridge University Press, Published in 2001, 560 pages

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

Lectures on Topics in Analysis
Raghavan Narasimhan  Tata Institute of Fundamental Research, Published in 1965, 205 pages

Computing of the Complex Variable Functions
Solomon I. Khmelnik, Inna S. Doubson  MiC, Published in 2011, 46 pages

Proofs in Mathematics
Alexander Bogomolny  Interactive Mathematics Miscellany and Puzzles, Published in 2013, 272 pages

Modeling, Functions, and Graphs: Algebra for College Students
Katherine Yoshiwara  Los Angeles Pierce College, Published in 2017, 344 pages

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

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

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

A Second Course in Logic
Christopher Gauker  University of Cincinnati, Published in 2013, 172 pages

Combinatorial Geometry with Application to Field Theory
Linfan Mao  InfoQuest, Published in 2009, 499 pages

Elementary Algebra
John Redden  The Saylor Foundation, Published in 2011, 1334 pages

A Primer of Commutative Algebra
J.S. Milne  , Published in 2011, 75 pages

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

Introduction to Characteritic Classes and Index Theory
JeanPierre Schneiders  Universidade de Lisboa, Published in 2000, 236 pages

A Sampler of RiemannFinsler Geometry
D. Bao, R. Bryant, S. Chern, Z. Shen  Cambridge University Press, Published in 2004, 376 pages

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

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

Probability Course
GianCarlo Rota  David Ellerman, Published in 1998, 544 pages

Pictures of Julia and Mandelbrot Sets
 Wikibooks, Published in 2010

A Concise Introduction to Mathematical Logic
Wolfgang Rautenberg  Springer, Published in 2009, 131 pages

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

A Philosophical Essay on Probabilities
Pierre Simon Laplace  Chapman & Hall, Published in 1902, 234 pages

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

Spherical Trigonometry
I. Todhunter  Macmillan and co, Published in 1886, 189 pages

An Introduction to Ktheory
Eric M. Friedlander  , Published in 2007, 78 pages

Algebraic Number Theory
J.S. Milne  , Published in 2008, 163 pages

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

Introduction to Topology
Alex Kuronya  , Published in 2010, 102 pages

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

Complex Integration and Cauchy's Theorem
G. N. Watson  Cambridge University Press, Published in 1914, 100 pages

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

Lectures on Numerical Methods for NonLinear Variational Problems
R. Glowinski  Tata Institute of Fundamental Research, Published in 1980, 265 pages

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

Complex Geometry of Nature and General Relativity
Giampiero Esposito  arXiv, Published in 1999, 229 pages

Partial Differential Equations of Mathematical Physics
William W. Symes  Rice University, Published in 2006, 105 pages

Differential Geometrical Theory of Statistics
Frederic Barbaresco, Frank Nielsen (eds)  MDPI AG, Published in 2017, 474 pages

CK12 Trigonometry
Mara Landers, Brenda Meery  CK12 Foundation, Published in 2009, 629 pages

Lectures On Some Fixed Point Theorems Of Functional Analysis
F.F. Bonsall  Tata Institute Of Fundamental Research, Published in 1962, 147 pages

Elementary Algebra and Calculus
Larissa Fradkin  Bookboon, Published in 2013, 261 pages

Geometry and Group Theory
Christopher Pope  Texas A&M University, Published in 2008, 181 pages

Numerical Methods with Applications
Autar K Kaw, Egwu Eric Kalu  Lulu.com, Published in 2008, 728 pages

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

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

Introduction to Applied Linear Algebra: Vectors, Matrices and Least Squares
Stephen Boyd, Lieven Vandenberghe  Cambridge University Press, Published in 2018, 473 pages

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

Combinatorics and Algebra of Tensor Calculus
Sen Hu, Xuexing Lu, Yu Ye  arXiv, Published in 2015, 88 pages

Lectures on Stochastic Processes
K. Ito  Tata Institute of Fundamental Research, Published in 1960, 207 pages

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

Digraphs: Theory, Algorithms and Applications
Jorgen BangJensen, Gregory Gutin  Springer, Published in 2002, 772 pages

Engineering Mathematics
Charles Proteus Steinmetz  McGrawHill, Published in 1911, 326 pages

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

Combinatorial Knot Theory
Louis H. Kauffman  University of Illinois at Chicago, Published in 2009, 159 pages

A Feel for Statistics
Ivan Lowe  scientificlanguage.com, Published in 2016, 121 pages

Algebraic and Geometric Surgery
Andrew Ranicki  Oxford University Press, Published in 2002, 380 pages

Introduction to Representation Theory
Fiona Murnaghan  University of Toronto, Published in 2010, 73 pages

Calculus
Gilbert Strang  Wellsley Cambridge Press, Published in 1991, 671 pages

RicciHamilton Flow on Surfaces
Li Ma  Tsinghua University, Published in 2003, 128 pages

Lectures on Exterior Differential Systems
M. Kuranishi  Tata Institute of Fundamental Research, Published in 1962, 117 pages

Mathematics and Music
David Wright  Washington University in St. Louis, Published in 2009, 176 pages

The World of Mathematics
Philipp Legner  Mathigon, Published in 2012

Category Theory: A Gentle Introduction
Peter Smith  Logic Matters, Published in 2016, 283 pages

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

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

Geometry for Elementary School
 Wikibooks, Published in 2007, 72 pages

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

The Elementary Properties of the Elliptic Functions
Alfred Cardew Dixon  Macmillan, Published in 1894, 164 pages

An Introduction to Microlocal Analysis
Richard B. Melrose, Gunther Uhlmann  MIT, Published in 2008, 182 pages

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

Basic Probability Theory
Robert B. Ash  Dover Publications, Published in 2008, 352 pages

Applied Combinatorics
Mitchel T. Keller, William T. Trotter  Georgia Institute of Technology, Published in 2013, 345 pages

Introduction to Real Analysis
William F. Trench  Prentice Hall, Published in 2003, 583 pages

Encyclopedia of Mathematics
 Kluwer Academic Publishers, Published in 2002, 1202 pages

An Introduction to Geometry
Wong Yan Loi  National University of Singapore, Published in 2021, 145 pages

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

Practical Mathematics for Home Study
Claude Irwin Palmer  McGrawHill, Published in 1919, 528 pages

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

Nonstandard Analysis
J. Ponstein  , Published in 2002, 147 pages

A Handbook of Statistics
Darius Singpurwalla  Bookboon, Published in 2013, 79 pages

Trigonometry
Ted Sundstrom, Steven Schlicker  Grand Valley State University, Published in 2016, 442 pages

Elements of Abstract and Linear Algebra
Edwin H. Connell  , Published in 2004, 146 pages

The Game of Logic
Lewis Carroll  MacMillan, Published in 1887, 128 pages

An Elementary Treatise on Conic Sections
Charles Smith  The Macmillan Company, Published in 1905, 378 pages

Modular Forms, Hecke Operators, and Modular Abelian Varieties
Kenneth A. Ribet, William A. Stein  University of Washington, Published in 2003, 154 pages

Introduction to Statistical Thought
Michael Lavine  , Published in 2008, 434 pages

Convex Geometric Analysis
Keith Ball, Vitali Milman  Cambridge University Press, Published in 1998, 236 pages

Metric and Topological Spaces
T. W. Körner  University of Cambridge, Published in 2014, 109 pages

Geometry of Numbers with Applications to Number Theory
Pete L. Clark  University of Georgia, Published in 2015, 159 pages

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

Lectures on Symplectic Geometry
Ana Cannas da Silva  Springer, Published in 2006, 225 pages

Applied Discrete Structures
Al Doerr, Ken Levasseur  Lulu.com, Published in 2013, 496 pages

Optimization Algorithms on Matrix Manifolds
P.A. Absil, R. Mahony, R. Sepulchre  Princeton University Press, Published in 2007, 240 pages

A Brief Introduction to the Infinitesimal Calculus
Irving Fisher  Macmillan, Published in 1921, 110 pages

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

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

Dr. Vogel's Gallery of Calculus Pathologies
Thomas I. Vogel  , Published in 1997

Local Theory of Holomorphic Foliations and Vector Fields
Julio C. Rebelo, Helena Reis  arXiv, Published in 2011, 115 pages

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

Symbolic Tensor Calculus on Manifolds: a SageMath Implementation
Eric Gourgoulhon, Marco Mancini  arXiv.org, Published in 2018, 72 pages

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

Tensor Trigonometry
A.S. Ninul  FIZMATLIT, Published in 2021, 320 pages

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

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

Intersection Graphs: An Introduction
Madhumangal Pal  arXiv, Published in 2014, 49 pages

Basic Category Theory
Jaap van Oosten  University of Utrecht, Published in 2007, 88 pages

The Mathemagician and Pied Puzzler: A Collection in Tribute to Martin Gardner
Martin Gardner, at al.  AK Peters, Published in 1999, 252 pages

Understanding Calculus
Faraz Hussain  , Published in 2008

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

Elementary Functions and Applications
Arthur Sullivan Gale, Charles William Watkeys  H. Holt & Co., Published in 1920, 459 pages

The Handbook of Essential Mathematics
John C. Sparks  Air Force Publication, Published in 2006, 205 pages

Holomorphic Spaces
S. Axler, J. McCarthy, D. Sarason  Cambridge University Press, Published in 1998, 476 pages

Workbook in Higher Algebra
David Surowski  , Published in 1992, 194 pages

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

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

The Geometry of Iterated Loop Spaces
J. P. May  Springer, Published in 1972, 175 pages

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

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

Analytic geometry for colleges, universities, and technical schools
E.W. Nichols  Leach, Shewell & Sanborn, Published in 1892, 304 pages

Introduction to Stochastic Analysis
Michael Roeckner  Universitaet Bielefeld, Published in 2011, 98 pages

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

Dynamical Systems: Analytical and Computational Techniques
Mahmut Reyhanoglu  InTech, Published in 2017, 272 pages

Complex Manifolds
Julius Ross  Stanford University, Published in 2014, 119 pages

Reversibility and Stochastic Networks
F.P. Kelly  John Wiley and Sons Ltd, Published in 1979, 233 pages

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

Lectures on Linear Algebra and Matrices
G. Donald Allen  Texas A&M University, Published in 2003, 238 pages

Mathematical Illustrations: A Manual of Geometry and PostScript
Bill Casselman  Cambridge University Press, Published in 2005, 336 pages

Encyclopaedia of Mathematics
Michiel Hazewinkel  Springer, Published in 2011

SemiRiemann Geometry and General Relativity
Shlomo Sternberg  , Published in 2003, 251 pages

Determinantal Rings
Winfried Bruns, Udo Vetter  Springer, Published in 1988, 244 pages

An Introduction to DModules
JeanPierre Schneiders  Universite de Liege, Published in 1991, 73 pages

Foundations of Combinatorics with Applications
Edward A. Bender, S. Gill Williamson  Dover Publications, Published in 2006, 480 pages

Introduction to Evolution Equations in Geometry
Bianca Santoro  arXiv, Published in 2012, 91 pages

Lectures on Cyclic Homology
D. Husemoller  Tata Institute of Fundamental Research, Published in 1991, 114 pages

Analytic Geometry
L. P. Siceloff, G. Wentworth, D. E. Smith  Ginn and Company, Published in 1922, 296 pages

Fractional Dynamics
Carlo Cattani, et al.  De Gruyter Open Ltd, Published in 2016, 408 pages

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

Elements of the Theory of Functions of a Complex Variable
G.E. Fisher, I.J. Schwatt  Philadelphia G.E. Fisher, Published in 1896, 312 pages

Robust Optimization
A. BenTal, L. El Ghaoui, A. Nemirovski  Princeton University Press, Published in 2009, 564 pages

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

Calculus for Mathematicians, Computer Scientists, and Physicists
Andrew D. Hwang  Holy Cross, Published in 1998, 487 pages

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

An Invitation to Mathematics
Arnold Dresden  H. Holt and Company, Published in 1936, 453 pages

Analytic Combinatorics
Philippe Flajolet, Robert Sedgewick  Cambridge University Press, Published in 2008, 822 pages

Essentials of Trigonometry with Applications
D.R. Curtiss, E.J. Moulton  D. C. Heath And Company, Published in 1942, 190 pages

Integrate Your Brain: How To Do Calculus In Your Head
Aaron Maxwell  Lulu.com, Published in 2006, 51 pages

Lectures on Forms of Higher Degree
J.I. Igusa  Tata Institute of Fundamental Research, Published in 1978, 169 pages

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

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

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

Lectures on Birational Geometry
Caucher Birkar  arXiv, Published in 2012, 85 pages

Mathematical Physics II
Boris Dubrovin  SISSA, Published in 2008, 78 pages

Definitions, Solved and Unsolved Problems, Conjectures, and Theorems in Number Theory and Geometry
Florentin Smarandache  Amer Research Pr, Published in 2000, 84 pages

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

Ends of Complexes
Bruce Hughes, Andrew Ranicki  Cambridge University Press, Published in 2008, 375 pages

A Course of Modern Analysis
E. T. Whittaker, G. N. Watson  Cambridge University Press, Published in 1920, 608 pages

The Life of Pi: From Archimedes to Eniac and Beyond
Jonathan M. Borwein  DocServer, Published in 2010, 30 pages

The Algebraic Theory of Modular Systems
Francis Sowerby Macaulay  Cambridge University Press, Published in 1916, 140 pages

Special Course in Functional Analysis: (Non)Commutative Topology
Ville Turunen  Aalto TKK, Published in 2008, 83 pages

Orders of Infinity
G. H. Hardy  Cambridge University Press, Published in 1910, 101 pages

Calculus in Context
James Callahan, et al.  Five Colleges, Inc., Published in 2008, 869 pages

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

Noncommutative Geometry
Alain Connes  Academic Press, Published in 1994, 654 pages

Group theory for Maths, Physics and Chemistry
Arjeh Cohen, Rosane Ushirobira, Jan Draisma  , Published in 2007, 93 pages

Random Matrix Theory, Interacting Particle Systems and Integrable Systems
Percy Deift, Peter Forrester (eds)  Cambridge University Press, Published in 2014, 528 pages

Convergence of Stochastic Processes
D. Pollard  Springer, Published in 1984, 223 pages

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

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

Differential Geometry: A First Course in Curves and Surfaces
Theodore Shifrin  University of Georgia, Published in 2015, 127 pages

Bayesian Field Theory
J. C. Lemm  arXiv.org, Published in 2000, 200 pages

Metalogic
Jan Wolenski  ESSLLI, Published in 2002, 35 pages

Jacobi Operators and Complete Integrable Nonlinear Lattices
Gerald Teschl  American Mathematical Society, Published in 1999, 369 pages

Discrete Mathematics for Computer Science
Jean Gallier  arXiv, Published in 2008, 255 pages

Introduction to Analysis
Irena Swanson  Purdue University, Published in 2020, 353 pages

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

Nonlinear Functional Analysis
Gerald Teschl  University of Vienna, Published in 2009, 74 pages

Math Made a Bit Easier: Basic Math Explained in Plain English
Larry Zafran  CreateSpace, Published in 2009, 280 pages

Basic Analysis: Introduction to Real Analysis
Jiri Lebl  Lulu.com, Published in 2009, 161 pages

Statistical Theory
Ryan Martin  University of Illinois at Chicago, Published in 2015, 117 pages

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

Plane and Solid Analytic Geometry
W. F. Osgood, W. C. Graustein  Macmillan and co., Published in 1921, 651 pages

Why the Boundary of a Round Drop Becomes a Curve of Order Four
A. N. Varchenko, P. I. Etingof  American Mathematical Society, Published in 1992, 72 pages

Tunneling Through the Math Barrier
William J. Meese  arXiv.org, Published in 2018, 187 pages

Special Fuzzy Matrices for Social Scientists
W. B. V. Kandasamy, F. Smarandache, K. Ilanthenral  InfoLearnQuest, Published in 2007, 302 pages

Riemann Surfaces, Dynamics and Geometry
Curtis McMullen  Harvard University, Published in 2008, 167 pages

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

Statistics for the Social and Behavioral Sciences
David A. Kenny  Little, Brown, Published in 1987, 407 pages

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

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

Lectures on Singular Stochastic PDEs
M. Gubinelli, N. Perkowski  arXiv, Published in 2015, 67 pages

An Introduction to Lie Group Integrators
E. Celledoni, H. Marthinsen, B. Owren  arXiv, Published in 2012, 28 pages

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

Linear Algebra
Jonathan Gleason  University of California, Published in 2018, 681 pages

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

Numerical Methods Course Notes
Steven E. Pav  University of California at San Diego, Published in 2005, 180 pages

Inverse Problems and Applications: Inside Out II
Gunther Uhlmann (ed.)  Cambridge University Press, Published in 2013, 580 pages

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

The Contraction Mapping Principle and Some Applications
Robert M. Brooks, Klaus Schmitt  American Mathematical Society, Published in 2009, 90 pages

Lectures on Topics in Algebraic KTheory
Hyman Bass  Tata Institute of Fundamental Research, Published in 1967, 138 pages

On 2D Inverse Problems
 Wikibooks, Published in 2013

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

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

Compiled and Solved Problems in Geometry and Trigonometry
Florentin Smarandache  viXra.org, Published in 2015, 221 pages

Periodic Solutions for Evolution Equations
Mihai Bostan  American Mathematical Society, Published in 2002, 41 pages

Lectures on Noise Sensitivity and Percolation
Christophe Garban, Jeffrey E. Steif  arXiv, Published in 2011, 150 pages

Geometrical Theory of Dynamical Systems
Nils Berglund  arXiv, Published in 2001, 85 pages

Topics in Geometry
John O'Connor  University of St Andrews, Published in 2003

Notes on Measure and Integration
John Franks  arXiv, Published in 2009, 118 pages

Stochastic Processes
David Nualart  The University of Kansas, Published in 2017, 82 pages

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

Spectral Theory
Leif Mejlbro  BookBoon, Published in 2009, 80 pages

New Frontiers in Graph Theory
Yagang Zhang (ed.)  InTech, Published in 2012, 526 pages

Linear Optimisation and Numerical Analysis
Ian Craw  University of Aberdeen, Published in 2002, 151 pages

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

Homological Methods in Noncommutative Geometry
D. Kaledin  , Published in 2008, 77 pages

An Introduction to Higher Mathematics
Patrick Keef, David Guichard, Russ Gordon  Whitman College, Published in 2010, 144 pages

Essentials of Statistics
David Brink  BookBoon, Published in 2008, 102 pages

Symbolic Logic: A Second Course
Gary Hardegree  UMass Amherst, Published in 2003, 246 pages

Comparison Geometry
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Abstract Algebra: Theory and Applications
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Linear Algebra
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Logic for Computer Scientists
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Elementary Statistical Methods
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Applied Mathematical Programming Using Algebraic Systems
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Basic Math Quick Reference Handbook
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The Essential Elementary and Intermediate Algebra
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Differential Equations
William Woolsey Johnson  J. Wiley, Published in 1906, 96 pages

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New Directions in Hopf Algebras
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Almost None of the Theory of Stochastic Processes
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What is Mathematics: Gödel's Theorem and Around
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Numerical Recipes in Fortran 90
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Introduction to Probability
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Numerical Methods For Time Dependent Equations
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Spectral Theory of Partial Differential Equations
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Complex Multiplication
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Category Theory
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Constructive Geometry
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Noncompact Harmonic Manifolds
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StreetFighting Mathematics
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Multivariate Statistics: Concepts, Models, and Applications
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An Introduction to Quantum Chaos
Mason A. Porter  arXiv, Published in 2001, 57 pages

Algebraic Equations
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Probability Theory and Stochastic Processes with Applications
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Hyperbolic Functions
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A Course In Algebraic Number Theory
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Algorithmic Mathematics
Leonard Soicher, Franco Vivaldi  Queen Mary University of London, Published in 2004, 94 pages

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Variational Modelling: Energies, gradient flows, and large deviations
Mark A. Peletier  arXiv, Published in 2014, 64 pages

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

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Current Developments in Algebraic Geometry
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Measure Theory in NonSmooth Spaces
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The Principles Of Mathematics
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Partial Differential Equations: An Introduction
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Notes on Discrete Mathematics
Miguel A. Lerma  , Published in 2005, 154 pages

Multivariable Calculus
Wong Yan Loi  National University of Singapore, Published in 2013, 105 pages

Real Functions in One Variable: Calculus 1a
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Introduction to Partial Differential Equations
John Douglas Moore  UCSB, Published in 2003, 169 pages

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Group Theory: Birdtracks, Lie's, and Exceptional Groups
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Matroid Decomposition
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Bernoulli Polynomials and Applications
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A Problem Course in Mathematical Logic
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The Pythagorean Theorem: Crown Jewel of Mathematics
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Elementary Differential Equations with Boundary Value Problems
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Difference Equations to Differential Equations  An introduction to calculus
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Linear Complementarity, Linear and Nonlinear Programming
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Roots of a Compact Lie Group
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Vector Calculus
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Complex Analysis
Christian Berg  Kobenhavns Universitet, Published in 2012, 192 pages

Reversible Markov Chains and Random Walks on Graphs
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Computer Algebra, Algorithms, Systems and Applications
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Differential Geometry in Physics
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Secondorder Ordinary Differential Equations
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Topics in Random Matrix Theory
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Topics in Applied Mathematics and Nonlinear Waves
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Random Walks and Electric Networks
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Noncommutative Rings
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Theory of the Integral
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Foundations in Statistical Reasoning
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Symplectic Geometry of Quantum Noise
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Barbara Illowsky, Susan Dean  Illowsky Publising, Published in 2012, 728 pages

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Alexander Kirillov, Jr.  SUNY at Stony Brook, Published in 2010, 136 pages