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Anthony Aaby, Compiler Construction using Flex and Bison (programming languages) free to read, modify, and sell

Harold Abelson, Philip Greenspun, Lydia Sandon, Tcl for Web Nerds (programming languages)

Paul W. Abrahams, Kathryn A. Hargreaves, Karl Berry, TeX for the Impatient (applications) free to read, modify, and sell

Jay Abramson, Algebra and trigonometry (mathematics) free to read, modify, and sell

Jay Abramson, Precalculus (mathematics) free to read, modify, and sell

Michael Abrash, Graphics Programming Black Book (computer science)

Tigran Aivazian, Linux Kernel Internals (operating systems) free to read, modify, and sell

Susan Albers, Competitive Online Algorithms (computer science)

A. D. Aleksandrov, V. A. Zalgaller, Intrinsic Geometry of Surfaces (geometry)

Noga Alon, Joel Spencer, Probabilistic Method, The (mathematics)

Alexander Altland, Electrodynamics (electromagnetism)

Alexander Altland, Quantum Field Theory in Condensed Matter Physics (condensed matter)

E Alvarez, P Meesen, String Primer (quantum gravity. string theory)

Kevin Amaratunga, Wavelets, Filter Banks, and Applications (mathematics)

Ross Anderson, Security Engineering (mathematics. computer science)

anonymous, Ada Programming (mathematics. computer science) free to read, modify, and sell

anonymous, Blender 3D: Noob to Pro (mathematics. computer science) free to read, modify, and sell

anonymous, Maximum Security: A Hacker’s Guide to Protecting Your Internet Site and Network (internet and networking)

anonymous, Perl Design Patterns (programming languages)

anonymous, PostScript Language Reference, Third Edition (programming languages)

anonymous, Special Relativity (relativity) free to read, modify, and sell

anonymous, Why’s (Poignant) Guide to Ruby (programming languages) free to read, modify, and sell

Stefanos Aretakis, Lecture Notes on General Relativity (relativity)

Aristotle, R. P. Hardie (Trans.), R. K. Gaye (Trans.), Physics (physics)

Douglas N. Arnold, Complex Analysis (analysis)

Douglas N. Arnold, Functional Analysis (analysis)

Vladimir Arnold, School Taskbook: From 5 to 15 (mathematics. computer science)

Sanjeev Arora, Boaz Barak, Computational Complexity: A Modern Approach (mathematics. computer science)

Sanjeev Arora, Probabilistic Checking of Proofs and Hardness of Approximation Problems (probability and statistics)

Remzi H. Arpaci-Dusseau, Andrea Arpaci-Dusseau, Operating systems: three easy pieces (mathematics. computer science)

Robert Ash, Abstract Algebra: The Basic Graduate Year (abstract algebra)

Carol Ash, Advanced Calculus Notes (analysis)

Robert Ash, Course In Algebraic Number Theory, A (mathematics. computer science)

Robert Ash, Course In Commutative Algebra, A (mathematics. computer science)

Carol Ash, Differential Equations Notes (analysis)

Carol Ash, Discrete Math Notes (discrete mathematics)

Carol Ash, Linear algebra (linear algebra)

Robert Ash, W.P. Novinger, Complex Variables (analysis)

Charles Ashbacher, Collection of Problems on Smarandache Notions (mathematics. computer science)

Charles Ashbacher, Introduction to the Smarandache Function, An (mathematics. computer science)

Association for Educational Communications and Technology, Instructional Use of Learning Objects, The (computer science)

Krassimir T. Atanassov, On some of the Smarandache’s Problems (mathematics. computer science)

Hagit Attiya, Distributed Algorithms (computer science)

Marco Avellaneda, Topics in Probability: The mathematics of financial risk-management (mathematics. computer science)

Jeremy Avigad, Computability and Incompleteness (logic and set theory)

George Backus, Continuum Mechanics (mechanics)

John C. Baez, Octonions , The (mathematics)

R.A. Bailey, Design of Comparative Experiments (mathematics)

Edward C. Bailey, Maximum RPM: Taking the Red Hat Package Manager to the Limit (operating systems) free to read, modify, and sell

Edgar C. Bain, Alloying Elements in Steel, The (chemistry)

Alan Bain, Stochastic Calculus Notes (probability and statistics)

Andrew Baker, Algebra and Number Theory (abstract algebra)

Andrew Baker, Galois Theory (abstract algebra)

Andrew Baker, Groups, Symmetry, and Fractals (abstract algebra)

Andrew Baker, Introduction to p-adic Numbers and p-adic Analysis, An (analysis)

Andrew Baker, Representations of Finite Groups (abstract algebra)

Hari Balakrishnan, Computer Networks (mathematics. computer science)

Thomas Banchoff, Terence Gaffney, Clint McCrory, Daniel Dreibelbis (Web Version), Cusps of Gauss Mappings (mathematics)

Genick Bar-Meir, Basics of Fluid Mechanics (physics) free to read, modify, and sell

Genick Bar-Meir, Fundamentals of Compressible Flow (fluids) free to read, modify, and sell

Michael Barr, Charles Wells, Category Theory for Computing Science (mathematics. computer science)

Michael Barr, Charles Wells, Toposes, Triples, and Theories (mathematics)

Richard Barrett, Templates for the Solution of Linear Systems: Building Blocks for Iterative Methods (linear algebra)

Jonathan Laine Bartlett, Programming from the Ground Up (general programming) free to read, modify, and sell

D. Beauquier, Jean Berstel, Ph. Chrétienne, Eléments d’algorithmique (mathematics. computer science)

Matthias Beck, Gerald Marchesi, First Course in Complex Analysis, A (mathematics. computer science)

Gerard Beekmans, Linux From Scratch (operating systems)

Robert A. Beezer, First Course in Linear Algebra, A (mathematics. computer science) free to read, modify, and sell

Robert A. Beezer, Second course in linear algebra, A (mathematics. computer science) free to read, modify, and sell

Stas Bekman, Eric Cholet, Practical mod_perl (internet and networking)

Mihir Bellare, Phillip Rogaway, Introduction to Modern Cryptography (security and cryptography)

Oleg A. Belyaev, Fundamentals of Geometry (geometry)

Michal Benko, Lenka Cízková, Wolfgang Härdle, Numerical Methods in Statistics (mathematics. computer science)

Dave Benson, Mathematics and Music (mathematics)

George M. Bergman, Invitation to General Algebra and Universal Constructions, An (abstract algebra)

Karl Berry, Eplain: Expanded Plain TeX (mathematics. computer science) free to read, modify, and sell

Dimitri Bertsekas, Dynamic Programming and Stochastic Control (mathematics. computer science)

A. Betten, H. Fripertinger, A. Kerber, Algebraic Combinatorics Via Finite Group Actions (abstract algebra)

Stefan Bilaniuk, Problem Course in Mathematical Logic, A (logic and set theory)

James Binney, Classical Fields (electromagnetism)

James Binney, Classical Mechanics (mechanics)

James Binney, Complex Numbers and Ordinary Differential Equations (mathematics)

James Binney, Functions of a Complex Variable (analysis)

James Binney, Geometry and Physics (physics)

James Binney, Group Theory (abstract algebra)

James Binney, Quantum Mechanics (quantum mechanics)

James Binney, Statistical Mechanics (thermodynamics)

George D. Birkhoff, Dynamical Systems (mathematics)

Alex Biryukov, Methods of Cryptanalysis (security and cryptography)

Charles Blair, Notes on Cryptography (security and cryptography)

Brian Blais, Statistical Inference For Everyone (probability and statistics) free to read, modify, and sell

Jasmin Blanchette, Mark Summerfield, C++ GUI Programming with QT3 (mathematics. computer science) free to read, modify, and sell

Roger D. Blandford, Kip S. Thorne, Applications of Classical Physics (physics)

R.K. Bock, W. Krischer, Data Analysis Briefbook, The (physics)

Matt Boelkins, David Austin, Steven Schlicker, Active Calculus (analysis)

Armand Borel (Ed.), George D. Mostow (Ed.), Algebraic Groups and Discontinuous Subgroups (abstract algebra)

John P. Boyd, Chebyshev and Fourier Spectrum Methods (mathematics. computer science)

Stephen Boyd, Lieven Vandenberghe, Convex Optimization (mathematics)

Jason R. Briggs, Snake Wrangling for Kids: Learning to Program with Python (general programming) free to read, modify, and sell

Matthew G. Brin, Differential Topology Notes (topology)

Frank B. Brokken, C++ Annotations (programming languages)

Kevin Brown, Algebra (MathPages) (abstract algebra)

Kevin Brown, Calculus and Differential Equations (MathPages) (mathematics)

Kevin Brown, Combinatorics (MathPages) (discrete mathematics)

Kevin Brown, Geometry (MathPages) (geometry)

Kevin Brown, History (MathPages) (biology. natural history)

Robert G. Brown, Introductory Physics (physics)

Kevin Brown, MathPages (mathematics)

Kevin Brown, Number Theory (MathPages) (number theory)

Kevin Brown, Physics (MathPages) (physics)

Kevin Brown, Probability and Statistics (MathPages) (probability and statistics)

Kevin Brown, Reflections on Relativity (MathPages) (relativity)

Kevin Brown, Set Theory and Foundations (MathPages) (logic and set theory)

Stan Brown, Trig Without Tears (mathematics)

Jason Brownlee, Clever Algorithms: Nature-Inspired Programming Recipes (general programming)

Winfried Bruns, Udo Vetter, Determinantal rings (abstract algebra)

Lieven Le Bruyn, Noncommutative Geometry@n (geometry)

Robert Bryant, An Introduction to Lie Groups and Symplectic Geometry (mathematics)

James V. Burke, Fundamentals of Optimization (mathematics)

James V. Burke, Nonlinear Programming with Applications in Financial Optimization (mathematics)

James V. Burke, Numerical Optimization (mathematics)

Ian Burley, Meg Carrington, Randy Kobes, Gabor Kunstatter, Introductory Physics Notes (physics)

Stanley N. Burris, H. P. Sankappanavar, Course in Universal Algebra, A (abstract algebra)

Steven Butler, Notes from Trigonometry (mathematics)

Tim Button, Metatheory (logic and set theory) free to read, modify, and sell

Tim Button, Set theory: an open introduction (logic and set theory) free to read, modify, and sell

Robert N. Cahn, Semi-Simple Lie Algebras and their Representations (abstract algebra)

George Cain, Complex Analysis (analysis)

George Cain, James Herod, Multivariable Calculus (analysis)

James Callahan, Calculus in context (mathematics. computer science)

Jamie Cameron, Managing Linux Systems with Webmin: System Administration and Module Development (mathematics. computer science) free to read, modify, and sell

Philip Carinhas, Linux Fundamentals: A Training Manual (operating systems) free to read, modify, and sell

T.K. Carne, Further Analysis (analysis)

T.K. Carne, Geometry (geometry)

Sean M. Carroll, Lecture Notes on General Relativity (relativity)

Paul Carter, PC Assembly Language (programming languages)

Roberto Casalbuoni, Quantum Field Theory Lecture Notes (quantum mechanics)

Bill Casselman, Mathematical Illustrations: A Manual of Geometry and Postscript (mathematics. computer science)

D.C. Cassidy, G. Holton, J. Rutherford, Understanding Physics (physics)

Ching-Li Chai, Algebraic Number Theory (number theory)

Emmanuel Chailloux, Pascal Manoury, Bruno Pagano, Developing Applications with Objective Caml (programming languages)

Gregory J. Chaitin, Algorithmic Information Theory (mathematics)

Gregory J. Chaitin, Exploring Randomness (probability and statistics)

Gregory J. Chaitin, Information, Randomness & Incompleteness (mathematics)

Gregory J. Chaitin, Information-Theoretic Incompleteness (mathematics)

Gregory J. Chaitin, Limits of Mathematics, The (mathematics)

Gregory J. Chaitin, Unknowable, The (mathematics)

S.J. Chapman, Perturbation Methods (physics)

Jeffrey R. Chasnov, Lecture Notes in Mathematical Biology (mathematics. computer science)

Jianer Chen, Computational Geometry (geometry)

Jianer Chen, Computational Optimization (computer science)

William Chen, Distribution of Prime Numbers (number theory)

William Chen, First Year Mathematics (mathematics)

William Chen, Introduction to Complex Analysis (analysis)

William Chen, Introduction to Lebesgue Integration (analysis)

William Chen, Linear Algebra (linear algebra)

William Chen, Linear Functional Analysis (analysis)

Carmen Chicone, Richard Swanson, Linearization via the Lie Derivative (analysis)

chromatic, Modern Perl (programming languages)

I. D. Chueshov, Introduction to the Theory of Infinite-Dimensional Dissipative Systems (mathematics)

Krzysztof Ciesielski, Set Theoretic Real Analysis (analysis)

Pedrag Civitanovic, Group Theory: Birdtracks, Lie’s, and Exceptional Groups (mathematics. computer science)

CK-12 Foundation, CK-12 Calculus (mathematics. computer science)

CK-12 Foundation, CK-12 Chemistry (chemistry)

CK-12 Foundation, CK-12 Geometry (mathematics. computer science)

CK-12 Foundation, CK-12 Trigonometry (mathematics. computer science)

Jon Claerbout, Basic Earth Imaging (geology)

Jon Claerbout, Earth Soundings Analysis: Processing versus Inversion (geology)

Jon Claerbout, Fourier Transforms and Waves in Four Lectures (geology)

Jon Claerbout, Fundamentals of Geophysical Data Processing (geology)

Jon Claerbout, Geophysical Estimation by Example (geology)

Jon Claerbout, Imaging Earth’s Interior (geology)

Edwin Clark, Elementary Abstract Algebra (abstract algebra)

Edwin Clark, Elementary Number Theory (number theory)

Bon Clarke, Fourier Theory Lecture Notes (mathematics)

Josh Cogliati, Non-Programmers Tutorial For Python (programming languages) free to read, modify, and sell

Piers Coleman, Many Body Physics (physics)

David H. Collingwood, K. David Prince, Precalculus (mathematics) free to read, modify, and sell

Ben Collins-Sussman, Brian W. Fitzpatrick, Version Control with Subversion (mathematics. computer science) free to read, modify, and sell

George W. II Collins, Fundamental Numerical Methods and Data Analysis (mathematics)

George W. II Collins, Fundamentals of Stellar Astrophysics, The (physics)

Edwin H. Connell, Elements of Abstract and Linear Algebra (linear algebra)

John Conway, Peter Doyle, Jane Gilman, Bill Thurston, Geometry and the Imagination (geometry)

Mendel Cooper, Advanced Bash-Scripting Guide (general programming)

Robert B. Cooper, Introduction to Queueing Theory (mathematics. computer science)

Michael Coughlan, COBOL Programming Course (programming languages)

David A. Cox, Introduction to algebraic geometry (geometry)

Ian Craw, Advanced Calculus and Analysis (analysis)

Jack Crenshaw, Let’s Build a Compiler (programming languages)

Jon Crowcroft, Open Distributed Systems (computer science)

Benjamin Crowell, Conceptual Physics (physics) free to read, modify, and sell

Benjamin Crowell, Discover Physics (physics) free to read, modify, and sell

Benjamin Crowell, Fields and Circuits (electromagnetism) free to read, modify, and sell

Benjamin Crowell, Fundamentals of Calculus (analysis) free to read, modify, and sell

Benjamin Crowell, General Relativity (relativity) free to read, modify, and sell

Benjamin Crowell, Light and Matter (physics) free to read, modify, and sell

Benjamin Crowell, Mechanics (mechanics) free to read, modify, and sell

Benjamin Crowell, Modern physics (physics) free to read, modify, and sell

Benjamin Crowell, Relativity for poets (relativity) free to read, modify, and sell

Benjamin Crowell, Special relativity (relativity) free to read, modify, and sell

Matthew J.C. Crump, Danielle J. Navarro, Jeffrey Suzuki, Answering questions with data (probability and statistics) free to read, modify, and sell

Claude Crépeau, Cryptography and Data Security (security and cryptography)

Eoin Curran, Analysis (analysis)

Eoin Curran, Linear Algebra, Tensors, and Differentials (linear algebra)

Eoin Curran, Representation Theory (mathematics)

P. Cvitanic, R. Artuso, R. Mainieri, G. Tanner, G. Vattay, Classical and Quantum Chaos (physics)

Predrag Cvitanovic, Chaos – Classical and Quantum (mathematics)

Predrag Cvitanovic, Group theory: birdtracks, Lie’s, and exceptional groups (abstract algebra)

Pavel Cízek, Sigbert Klinke, XploRe Introductory Course (mathematics. computer science)

Thomas d’Henin, Cours de Mathématiques pour les Étudiants Candidats à l’Échange ENSAE-HUB (mathematics. computer science)

James H. Dann, James J. Dann, People’s Physics Book, The (physics)

David Darmofal, Computational Methods in Aerospace Engineering (mathematics)

Olivier Darrigol, From c-Numbers to q-Numbers: The Classical Analogy in the History of Quantum Theory (quantum mechanics)

Refsnes Data, W3Schools Online Web Tutorials (computer science)

Hal Daumé III, Yet Another Haskell Tutorial (programming languages) free to read, modify, and sell

Martin Day, An Introduction to Proofs and the Mathematical Vernacular (mathematics. computer science)

Hans de Vries, Understanding Relativistic Quantum Field Theory (field theory)

C. DeBoor, Approximation Theory (mathematics)

Craig DeLancey, Concise introduction to logic, a (logic and set theory) free to read, modify, and sell

Dennis Deturck, Herbert Wilf, Lectures on Numerical Analysis (numerical analysis)

Howard DeVoe, Thermodynamics and chemistry (chemistry) free to read, modify, and sell

R. DeVore, Nonlinear Approximation (mathematics)

Chris DiBona, Sam Ockman, Mark Stone, Open Sources: Voices from the Open Source Revolution (computer science)

Reinhard Diestel, Graph Theory (discrete mathematics)

Gh. C. Dinulescu-Campina, Modeling Rationality… and Beyond Physics (mathematics. computer science)

Igor V. Dolgachev, Introduction to Algebraic Geometry (geometry)

Igor V. Dolgachev, Introduction to Physics (physics)

Igor V. Dolgachev, Introduction to String Theory (quantum gravity. string theory)

Igor V. Dolgachev, Lectures on Invariant Theory (mathematics)

Igor V. Dolgachev, Modular Forms (mathematics)

Mark Jason Dominus, Higher-Order Perl (programming languages)

Chris Doran, Lecture Course in Geometric Algebra, A (mathematics)

Dale Dougherty, Tim OReilly, Unix Text Processing (operating systems)

Allen B. Downey, Jeffrey Elkner, Chris Meyers, Python for Software Design: How to Think Like a Computer Scientist (programming languages) free to read, modify, and sell

Allen B. Downey, How to Think Like a Computer Scientist, C++ Version (programming languages) free to read, modify, and sell

Allen B. Downey, Learning Perl the Hard Way (programming languages) free to read, modify, and sell

Allen B. Downey, Little Book of Semaphores, The (mathematics. computer science) free to read, modify, and sell

Nikos Drakos, From Antiquity to Einstein (physics)

Lou van den Dries, Mathematical Logic (logic and set theory)

Micah Dubinko, XForms Essentials (computer science)

Jonathan S. Duff, Moritz Lenz, Carl Mäsak, Patrick R. Michaud, Jonathan Worthington, Using Perl 6 (mathematics. computer science)

Todd Duncan, Ordinary World, An: The Role of Science in Your Search for Personal Meaning

Yigal Duppen, Test-Driven Development with Go (mathematics. computer science)

R. Kent Dybvig, Scheme Programming Language, The (programming languages)

Antony Eagle, Elements of deductive logic (logic and set theory) free to read, modify, and sell

John Earman, Bangs, crunches, whimpers, and shrieks: singularities and acausalities in relativistic spacetimes (relativity)

David J. Eck, Introduction to Programming Using Java (programming languages) free to read, modify, and sell

Bruce Eckel, Thinking in Patterns with Java (programming languages) free to read, modify, and sell

Robert Eckstein, David Collier-Brown, Peter Kelly, Using Samba (internet and networking)

Victor Eijkhout, Computer Science of TeX and LaTeX, The (applications)

Victor Eijkhout, Introduction to High Performance Scientific Computing (computer science)

Victor Eijkhout, TeX by Topic, A TeXnician’s Reference (applications) free to read, modify, and sell

Timo Eirola, Numerical Matrix Analysis (mathematics. computer science)

Shalosh B. Ekhad XIV, Plane Geometry: An Elementary Textbook (geometry)

Electronic Frontier Foundation, Big Dummy’s Guide to the Internet (internet and networking)

Electronic Frontier Foundation, Cracking DES: Secrets of Encryption Research, Wiretap Politics, and Chip Design (security and cryptography)

N. Elkies, Introduction to Analytic Number Theory (number theory)

Charles Epstein, Richard Melrose, Gerardo Mendoza, Heisenberg Algebra, The, Index Theory and Homology (abstract algebra)

John M. Erdman, A Companion to Real Analysis (analysis)

John M. Erdman, A ProblemText in Advanced Calculus (analysis)

Jeff Erickson, Algorithms, Etc. (mathematics. computer science)

Alison Etheridge, Stochastic Calculus for Finance (analysis)

Robert C. W. Ettinger, Man Into Superman

Robert C. W. Ettinger, Prospect of Immortality, The

Euclid, Elements (geometry)

V.I. Fabrikant, Applications of Potential Theory in Mechanics (mathematics)

V.I. Fabrikant, Mixed Boundary Value Problems of Potential Theory and their Applications in Engineering (mathematics)

Cody Fauser, James MacAulay, Edward Ocampo-Gooding, John Guenin, Rails 3 in a Nutshell (mathematics. computer science)

Kenny Felder, Advanced Algebra II (mathematics) free to read, modify, and sell

Matthias Felleisen, Robert Bruce Findler, Matthew Flatt, Shriram Krishnamurthi, How to Design Programs: An Introduction to Programming and Computing (general programming)

Matthias Felleisen, Phokion Kolaitis, Ian Barland, John Greiner, Moshe Vardi, Intro to Logic (logic and set theory) free to read, modify, and sell

Joseph Felsenstein, Theoretical Evolutionary Genetics (biology. natural history)

Matthias Fengler, Wolfgang Härdle, Finance Introductory Course (mathematics. computer science)

I. Fesenko, Commutative Algebra (abstract algebra)

I. Fesenko, Homological Algebra (abstract algebra)

I. Fesenko, Introduction to Algebraic Number Theory (number theory)

I. Fesenko, Introduction to Number Theory (number theory)

Richard Feynman, Feynman lectures, the (physics)

Joseph E. Fields, Gentle Introduction to the Art of Mathematics, A (mathematics. computer science) free to read, modify, and sell

Craig A. Finseth, Craft of Text Editing, the, or Emacs for the Modern World (applications)

Frank W. K. Firk, Essential physics (physics)

Richard Fitzpatrick, Classical Electromagnetism (electromagnetism)

Richard Fitzpatrick, Classical Electromagnetism (graduate version) (electromagnetism)

Richard Fitzpatrick, Classical Mechanics (mechanics)

Richard Fitzpatrick, Electromagnetism and Optics (electromagnetism)

Richard Fitzpatrick, Introduction to Computational Physics (physics)

Richard Fitzpatrick, Introduction to Plasma Physics (electromagnetism)

Richard Fitzpatrick, Quantum Mechanics (quantum mechanics)

Richard Fitzpatrick, Thermodynamics and Statistical Mechanics (thermodynamics)

Paul Flowers, Klaus Theopold, Richard Langley, Edward J. Neth, William R. Robinson, Chemistry: Atoms First (chemistry) free to read, modify, and sell

Paul Flowers, Klaus Theopold, Richard Langley, William R. Robinson, Chemistry (chemistry) free to read, modify, and sell

Peter Flynn, Formatting Information (computer science)

Karl Fogel, Open Source Development With CVS (computer science) free to read, modify, and sell

Maarten M. Fokkinga, Gentle Introduction to Category Theory, A – The Calculational Approach (mathematics)

Andrew Ford, Spinning the Web: How to Provide Information on the Internet, (internet and networking)

John Erik Fornæss, Complex Dynamics (mathematics)

Thomas Forster, Lectures on Set Theory (topology)

Ian Foster, Designing and Building Parallel Programs (computer science)

E.FJ Foster-Johnson, RPM Guide (Fedora) (operating systems)

Antony Fountain, Paula Ferguson, Motif Reference Manual (computer science) free to read, modify, and sell

jim Fowler, bart Snapp, Mooculus textbook, the (mathematics. computer science)

FreeBSD Documentation Project, FreeBSD Handbook (operating systems) free to read, modify, and sell

David H. Fremlin, Combinatorics (discrete mathematics)

David H. Fremlin, Complex Analysis II (analysis)

David H. Fremlin, Finite Mathematics (discrete mathematics)

David H. Fremlin, Group Theory (abstract algebra)

David H. Fremlin, Measure Theory (mathematics. computer science) free to read, modify, and sell

David H. Fremlin, Normed Spaces (mathematics)

Benoit Fresse, Homotopy of Operads and Grothendieck-Teichmüller Groups (mathematics. computer science)

Erland Gadde, Foundations of Nonstandard Analysis Without Urelements (logic and set theory)

Tony Gardiner, Alexandre Borovik, Essence of Mathematics Through Elementary Problems, The (mathematics)

Machtelt Garrels, Bash Guide for Beginners (general programming)

Machtelt Garrels, Introduction to Linux - A Hands on Guide (operating systems)

Paul Garrett, Buildings Book (mathematics)

Paul Garrett, Calculus refresher (analysis) free to read, modify, and sell

Paul Garrett, Functional Analysis Notes (analysis)

Paul Garrett, Introduction to Abstract Algebra (abstract algebra)

Paul Garrett, Vignettes on automorphic forms, representations, L-functions, and number theory (number theory)

James S. Gates Jr., Marcus T. Grisaru, Martin Rocek, Warren Siegel, Superspace, or, One Thousand and One Lessons in Supersymmetry (quantum mechanics)

U. H. Gerlach, Linear Mathematics in Infinite Dimensions: Signals, Boundary Value Problems, and Special Functions (mathematics)

Charles J. Geyer, Radically Elementary Probability and Statistics (mathematics. computer science)

Peter B. Gilkey, Invariance Theory, the Heat Equation, and the Atiyah-Singer Index Theorem (mathematics)

Peter B. Gilkey, John V. Leahy, Jeonghyeong Park, Spinors, Spectral Geometry, and Riemannian Submersions (geometry)

Jean-Yves Girard, Yves Lafont, Paul Taylor, Proofs and Types (mathematics. computer science)

Vivek Gite, Linux Shell Scripting Tutorial: A Beginner’s Handbook (general programming)

Michel X. Goemans, Advanced Algorithms Course Notes (computer science)

Casper Goffman, Togo Nishiura, Daniel Waterman, Homeomorphisms in Analysis (analysis)

Oded Goldreich, Foundations of Cryptography, The (security and cryptography)

Oded Goldreich, Introduction to Complexity Theory: Lecture Notes (mathematics)

Peter Goldreich, Sanjoy Mahajan, Sterl Phinney, Order-of-Magnitude Physics: Understanding the World with Dimensional Analysis, Educated Guesswork, and White Lies: Analysis, Educated Guesswork, and White Lies (physics)

Oded Goldreich, Probabilistic Proof Systems (probability and statistics)

Sven Goldt, Sven van der Meer, Scott Burkett, Matt Welsh, Linux Programmer’s Guide, The (operating systems)

W. Gomez, J. Guddat, H.Th. Jongen, J.-J Rückmann, C. Solano, Curvas Criticas y Saltos en Optimizacion No Lineal (analysis)

Andrew Goodall, Communication Theory (mathematics)

Frederick M. Goodman, Algebra: Abstract and Concrete (mathematics. computer science)

John Goodwin, E-Mail 101 (internet and networking)

H. Goosse, P.Y. Barriat, W Lefebvre, M.F. Loutre, V. Zunz, Introduction to Climate Dynamics and Climate Modelling (geology)

Daniel Gorenstein, Richard Lyons, Ronald Solomon, Classification of the Finite Simple Groups, The (abstract algebra)

Mel Gorman, Understanding the Linux Virtual Memory Manager (mathematics. computer science) free to read, modify, and sell

Harvey Gould, Jan Tobochnik, Thermal and Statistical Physics (relativity)

Ian Graham, Introduction To HTML and URLs (internet and networking)

Paul Graham, On Lisp (programming languages)

George Gratzer, Math into LaTeX: An Introduction to LaTeX and AMS-LaTeX (applications)

R. M. Gray, Entropy and Information Theory (mathematics)

R. M. Gray, Introduction to Statistical Signal Processing (mathematics. computer science)

R. M. Gray, Probability, Random Processes, and Ergodic Properties (mathematics. computer science)

R. M. Gray, Toeplitz and Circulant Matrices: A Review (mathematics. computer science)

Harvey Greenberg, Simplified Introduction to LaTeX, A (applications)

Philip Greenspun, Database-backed Web Sites (internet and networking)

Philip Greenspun, Philip and Alex’s Guide to Web Publishing (internet and networking)

Philip Greenspun, SQL for Web Nerds (internet and networking)

Roelofs Greg, PNG: The Definitive Guide (computer science) free to read, modify, and sell

Geoffrey Grimmet, Percolation and Disordered Systems (thermodynamics)

Christian Grosche, Introduction to Feynman Path Integrals (quantum mechanics)

Dick Grune, Ceriel J.H. Jacobs, Parsing Techniques - A Practical Guide (computer science)

Sigmundur Gudmundsson, Introduction to Riemannian Geometry, An (geometry)

David Guichard, Neal Koblitz, Community calculus (analysis)

Victor Guillemin, Shlomo Sternberg, Geometric Asymptotics (geometry)

Shishir Gundavaram, CGI Programming on the World Wide Web (internet and networking)

Andi Gutmans, Stig Bakken, Derick Rethans, PHP 5 Power Programming (mathematics. computer science) free to read, modify, and sell

Peter Hadrava, Lecture Notes on General Relativity (relativity)

Max Hailperin, Barbara Kaiser, Karl Knight, Concrete Abstractions - An Introduction to Computer Science Using Scheme (mathematics. computer science)

B. Hajek, Exploration of Random Processes for Engineers, An (probability and statistics)

Michael Hallett, Intermediate logic: an open introduction (logic and set theory) free to read, modify, and sell

Andrew Hamilton, General Relativity, Black Holes, and Cosmology (relativity)

Sir William Rowan Hamilton, David R. Wilkins, Sir William Rowan Hamilton (1805-1865): Mathematical Papers (mathematics)

Richard Hammack, Book of Proof (mathematics. computer science)

Bill Hammel, Finite Canonical Commutation Relations (mathematics. computer science)

Mark Handley, Jon Crowcroft, World Wide Web, The - Beneath the Surf (internet and networking)

Pierre de la Harpe, Vaughan Jones, Introduction to C* - Algebras, An (abstract algebra)

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Tony Howlett, Open Source Security Tools: Practical Guide to Security Applications, A (mathematics. computer science) free to read, modify, and sell

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John W. Norbury, General Relativity and Cosmology for Undergraduates (relativity)

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Tobias Oetiker, Hubert Partl, Irene Hyna, Elisabeth Schlegl, Not So Short Introduction to LaTeX2e, The (applications) free to read, modify, and sell

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Harry Perros, Computer Simulation Techniques – The Definitive Introduction (mathematics. computer science)

Harry Perros, Connection-Oriented Networks: SONET/SDH, ATM, MPLS, Optical Network (mathematics. computer science)

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Eric S. Raymond, Art Of Unix Programming, The (operating systems)

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Jonathan Stark, Building iPhone Apps with HTML, CSS, and JavaScript: Making App Store Apps Without Objective-C or Cocoa (general programming)

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Michael Sweet, Serial Programming Guide for POSIX Operating Systems (general programming) free to read, modify, and sell

Douglas Sweetser, Doing physics with quaternions (physics)

Al Sweigart, Invent Your Own Computer Games with Python (general programming)

Peter Sir Swinnerton-Dyer, Dynamical Systems (mathematics)

Stephen L. Talbott, Future Does Not Compute, The - Transcending the Machines in Our Midst (computer science)

Albert Tarantola, Elements for Physics: Quantities, Qualities, and Intrinsic Theories (physics)

Albert Tarantola, Inverse Problem Theory and Methods for Model Parameter Estimation (mathematics. computer science)

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George Thompson, New Results in Topological Field Theory and Abelian Gauge Theory (field theory)

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Bill Thurston, Geometry and Topology of Three-Manifolds, The (mathematics. computer science)

Andrei Tokmakoff, Introductory Quantum Mechanics II (quantum mechanics)

Claus Tondering, Surreal Numbers – An Introduction (analysis)

David Tong, Lectures on Dynamics and Relativity (mechanics)

David Tong, Lectures on Quantum Field Theory (field theory)

David S. Touretzky, Common Lisp: A Gentle Introduction to Symbolic Computation (programming languages)

Sergei Treil, Linear algebra done wrong (linear algebra)

William F. Trench, Introduction to Real Analysis (analysis)

Klaus Truemper, Matroid Decomposition (mathematics)

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Stanislaw M. Ulam, Analogies Between Analogies: The Mathematical Reports of S. M. Ulam and his Los Alamos Collaborators (mathematics. computer science)

Noel Vaillant, Probability Tutorials (probability and statistics)

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Matthew J. Van Cleve, Introduction to logic and critical thinking (logic and set theory) free to read, modify, and sell

Guido van Rossum, Python Tutorial (programming languages)

Robert J. Vanderbei, Linear Programming: Foundations and Extensions (mathematics)

Srinivasa S.R. Varadhan, Lectures Notes on Analysis, Limit Theorems, Harmonic Analysis, Statistics, and Stochastic Processes (mathematics)

A. N. Varchenko, P. I. Etingof, Why the Boundary of a Round Drop Becomes a Curve of Order Four (mathematics)

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Eckart Viehweg, Helene Esnault, Lectures on Vanishing Theorems (mathematics. computer science)

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Aizik I. Volpert, Vitaly A. Volpert, Vladimir A. Volpert, Traveling Wave Solutions of Parabolic Systems (digital signal processing)

Sasha Voronov, Mathematical Methods in Physics (mathematics. computer science)

Bert G. Wachsmuth, Interactive Real Analysis (analysis)

John Wahr, Geodesy and Gravity: Course Notes (geology)

Michal Walicki, Mathematical Logic: An Introduction (logic and set theory)

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Stefan Waner, Introduction to Differential Geometry and General Relativity (geometry)

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Ingo Wegener, Complexity of Boolean Functions, The (mathematics)

Charles Weibel, Introduction to Algebraic K-Theory, An (abstract algebra)

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Matt Welsh, Phil Hughes, David Bandel, Boris Beletsky, Sean Derilinger, Linux Installation and Getting Started (operating systems) free to read, modify, and sell

Zhang Wenpeng, Research on Smarandache Problems in Number Theory (mathematics. computer science)

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