Add Math Books from aimath.org (#5256)

* Add Math Books from aimath.org

* Fix Trailing Slashes

* Fix Alphabetical Order?

* Fix Alphabetical Order

* Fixed language and categories

* Fixed language and categories for -ko.md

* Removed most PDF links from addition.

* Replace German Resource with Direct Link to PDF

books/free-programming-books-de.md

@@ -17,6 +17,7 @@
 * [JavaScript](#javascript)
   * [React](#react)
 * [LaTeX](#latex)
+* [Mathematik](#mathematik)
 * [Meta-Lists](#meta-lists)
 * [MySQL](#mysql)
 * [Neo4j](#neo4j)
@@ -149,6 +150,11 @@
 * [LaTeX : Referenz der Umgebungen, Makros, Längen und Zähler](http://www.lehmanns.de/page/latexreferenz)
 
 
+### Mathematik
+
+* [Calcul mathématique avec SAGE](http://www.loria.fr/~zimmerma/sagebook/CalculDeutsch.pdf) - Paul Zimmermann et al. (PDF)
+
+
 ### Meta-Lists
 
 * [Galileo Computing - openbook](https://www.rheinwerk-verlag.de/openbook)

books/free-programming-books-es.md

@@ -28,6 +28,7 @@
   * [React](#react)
 * [LaTeX](#latex)
 * [Linux](#linux)
+* [Matemáticas](#matem%C3%A1ticas)
 * [.NET (C# Visual Studio)](#net-c--visual-studio)
 * [NoSQL](#nosql)
   * [MongoDB](#mongodb)
@@ -256,6 +257,11 @@
 * [El Manual del Administrador de Debian](https://debian-handbook.info/browse/es-ES/stable/) (HTML) [(PDF, ePub, Mobi)](https://debian-handbook.info/get/now/)
 
 
+### Matemáticas
+
+* [Sage para Estudiantes de Pregrado](http://www.sage-para-estudiantes.com) - Gregory Bard
+
+
 ### .NET (C# / Visual Studio)
 
 * [El lenguaje de programación C#](http://dis.um.es/~bmoros/privado/bibliografia/LibroCsharp.pdf) (PDF)

books/free-programming-books-fr.md

@@ -27,6 +27,7 @@
   * [TeX](#tex)
 * [Lisp](#lisp)
 * [Lua](#lua)
+* [Mathématiques](#math%C3%A9matiques)
 * [Meteor](#meteor)
 * [Perl](#perl)
 * [PHP](#php)
@@ -196,6 +197,11 @@
 * [Traité de programmation en Common Lisp](http://dept-info.labri.fr/~strandh/Teaching/Programmation-Symbolique/Common/Book/HTML/programmation.html) - Robert Strandh et Irène Durand
 
 
+### Mathématiques
+
+* [Calcul mathématique avec Sage](http://sagebook.gforge.inria.fr) - Paul Zimmermann et al.
+
+
 ### Lua
 
 * [Introduction à la programmation Lua](http://www.luteus.biz/Download/LoriotPro_Doc/LUA/LUA_Training_FR/Introduction_Programmation.html)

books/free-programming-books-ko.md

@@ -1,5 +1,6 @@
 ### Index
 
+* [수학](#%EC%88%98%ED%95%99)
 * [Amazon Web Service](#amazon-web-service)
 * [Assembly Language](#assembly-language)
 * [C](#c)
@@ -27,6 +28,11 @@
 * [Swift](#swift)
 
 
+### 수학
+
+* [기초정수론: 계산과 법연산, 그리고 비밀통신을 강조한](https://wstein.org/ent/) - William Stein
+
+
 ### Amazon Web Service
 
 * [아마존 웹 서비스를 다루는 기술](http://www.pyrasis.com/private/2014/09/30/publish-the-art-of-amazon-web-services-book)

books/free-programming-books.md

@@ -519,75 +519,117 @@
 
 #### Mathematics
 
-* [A First Course in Linear Algebra](http://linear.ups.edu) - Robert A. Beezer
+* [A Computational Introduction to Number Theory and Algebra](https://shoup.net/ntb/) - Victor Shoup
-* [Abstract Algebra: Theory and Applications](http://abstract.ups.edu) - Thomas W. Judson
+* [A First Course in Complex Analysis](http://math.sfsu.edu/beck/complex.html) - Matthias Beck, Gerald Marchesi, Dennis Pixton, Lucas Sabalka
+* [A First Course in Linear Algebra](http://linear.ups.edu) - Rob Beezer
+* [A Friendly Introduction to Mathematical Logic](https://milneopentextbooks.org/a-friendly-introduction-to-mathematical-logic/) - Christopher C. Leary and Lars Kristiansen
+* [A Gentle Introduction to the Art of Mathematics](https://osj1961.github.io/giam/) - Joseph E. Fields
+* [Abstract Algebra: Theory and Applications](http://abstract.ups.edu) - Tom Judson
+* [Active Calculus](https://scholarworks.gvsu.edu/books/20/) - Matt Boelkins
 * [Advanced Algebra](http://www.math.stonybrook.edu/~aknapp/download/a2-alg-inside.pdf) - Anthony W. Knapp (PDF)
+* [Algebra: Abstract and Concrete](https://homepage.divms.uiowa.edu/~goodman/algebrabook.dir/algebrabook.html) - Frederick Goodman
 * [Algebra: An Elementary Text-Book, Part I (1904)](http://djm.cc/library/Algebra_Elementary_Text-Book_Part_I_Chrystal_edited.pdf) - G. Chrystal (PDF)
 * [Algebra: An Elementary Text-Book, Part II (1900)](http://djm.cc/library/Algebra_Elementary_Text-Book_Part_II_Chrystal_edited02.pdf) - G. Chrystal (PDF)
 * [Algebraic Topology](https://pi.math.cornell.edu/~hatcher/AT/ATpage.html) - Allen Hatcher (PDF)
 * [An Introduction to the Theory of Numbers](http://www.trillia.com/moser-number.html) - Leo Moser (PDF)
 * [Analytic Geometry (1922)](http://djm.cc/library/Analytic_Geometry_Siceloff_Wentworth_Smith_edited.pdf) - Lewis Parker Siceloff, George Wentworth, David Eugene Smith (PDF)
+* [APEX Calculus](https://www.apexcalculus.com) - Gregory Hartman, Brian Heinold, Troy Siemers, and Dimplekumar Chalishajar
+* [Applied Combinatorics](https://rellek.net/book/app-comb.html) - Mitchel T. Keller and William T. Trotter
+* [Applied Discrete Structures](https://faculty.uml.edu/klevasseur/ads2/) - Alan Doerr and Kenneth Levasseur
 * [Basic Algebra](http://www.math.stonybrook.edu/~aknapp/download/b2-alg-inside.pdf) - Anthony W. Knapp (PDF)
+* [Basic Analysis: Introduction to Real Analysis](https://www.jirka.org/ra/) - Jiří Lebl
 * [Basics of Algebra, Topology, and Differential Calculus](http://www.cis.upenn.edu/~jean/math-basics.pdf) (PDF)
 * [Bayesian Methods for Hackers](https://github.com/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers) - Cameron Davidson-Pilon
 * [Beginning and Intermediate Algebra](http://www.wallace.ccfaculty.org/book/book.html) - Tyler Wallace
-* [Book of Proof](http://www.people.vcu.edu/~rhammack/BookOfProof/) - Richard Hammack (PDF)
+* [Book of Proof](https://www.people.vcu.edu/~rhammack/BookOfProof/) - Richard Hammack [(PDF)](https://www.people.vcu.edu/~rhammack/BookOfProof/Main.pdf)
-* [Calculus](http://ocw.mit.edu/ans7870/resources/Strang/Edited/Calculus/Calculus.pdf) - Gilbert Strang (PDF)
+* [Calculus](https://ocw.mit.edu/resources/res-18-001-calculus-online-textbook-spring-2005/textbook/) - Gilbert Strang
+* [Calculus I](https://resolver.caltech.edu/CaltechBOOK:1985.001) - Jerrold E. Marsden and Alan Weinstein
+* [Calculus in Context](http://www.math.smith.edu/~callahan/intromine.html) - James Callahan
 * [Calculus Made Easy](http://www.gutenberg.org/ebooks/33283) - Silvanus P. Thompson (PDF)
 * [Category Theory for the Sciences](https://mitpress.ublish.com/ereader/77/?preview#page/Cover) - David I. Spivak
 * [CK-12 Probability and Statistics - Advanced](http://www.ck12.org/book/Probability-and-Statistics---Advanced-%2528Second-Edition%2529/)
+* [CLP-1 Differential Calculus](https://www.math.ubc.ca/~CLP/CLP1/) - Joel Feldman, Andrew Rechnitzer, and Elyse Yeager
+* [CLP-2 Integral Calculus](https://www.math.ubc.ca/~CLP/CLP2/) - Joel Feldman, Andrew Rechnitzer, and Elyse Yeager
+* [CLP-3 Multivariable Calculus](https://www.math.ubc.ca/~CLP/CLP3/) - Joel Feldman, Andrew Rechnitzer, and Elyse Yeager
+* [CLP-4 Vector Calculus](https://www.math.ubc.ca/~CLP/CLP4/) - Joel Feldman, Andrew Rechnitzer, and Elyse Yeager
 * [Collaborative Statistics](http://cnx.org/contents/5e0744f9-9e79-4348-9237-ed012213a2d6%4040.9)
+* [Combinatorics Through Guided Discovery](https://bogart.openmathbooks.org) - Kenneth Bogart
 * [Complex Analysis](https://people.math.gatech.edu/~cain/winter99/complex.html) - George Cain
 * [Computational and Inferential Thinking. The Foundations of Data Science](https://www.inferentialthinking.com)
 * [Computational Geometry](http://web.mit.edu/hyperbook/Patrikalakis-Maekawa-Cho/)
+* [Computational Mathematics with SageMath](http://sagebook.gforge.inria.fr/english.html) - Paul Zimmermann et al.
 * [Concepts & Applications of Inferential Statistics](http://vassarstats.net/textbook/)
 * [Convex Optimization](https://web.stanford.edu/~boyd/cvxbook) - Stephen Boyd and Lieven Vandenberghe
 * [Coordinate Geometry (1911)](http://djm.cc/library/Coordinate_Geometry_Fine_Thompson_edited03.pdf) - Henry Buchard Fine and Henry Dallas Thompson (PDF)
 * [Differential Equations](http://tutorial.math.lamar.edu/Classes/DE/DE.aspx) - Paul Dawkins (PDF, use download menu to download)
 * [Differential Equations (1922)](http://djm.cc/library/Differential_Equations_Phillips_edited.pdf) - H. B. Phillips (PDF)
+* [Discrete Mathematics: An Open Introduction](http://discrete.openmathbooks.org/dmoi3.html) - Oscar Levin
+* [Discrete Mathematics: First and Second Course](https://cseweb.ucsd.edu/~gill/BWLectSite/) - Edward A. Bender and S. Gill Williamson
 * [Elementary Differential Equations](http://ramanujan.math.trinity.edu/wtrench/texts/TRENCH_DIFF_EQNS_I.PDF) - William F. Trench (PDF)
+* [Elementary Differential Equations (with Boundary Value Problems)](https://digitalcommons.trinity.edu/mono/9/) - William F. Trench
+* [Elementary Number Theory: Primes, Congruences, and Secrets](https://wstein.org/ent/) - William Stein
+* [Elementary Real Analysis](https://www.classicalrealanalysis.info/com/Elementary-Real-Analysis.php) - Brian S. Thomson, Judith B. Bruckner, Andrew M. Bruckner
+* [Elements of Abstract and Linear Algebra](https://www.math.miami.edu/~ec/book/) - E. H. Connell
 * [Elements of Differential and Integral Calculus (1911)](http://djm.cc/library/Elements_Differential_Integral_Calculus_Granville_edited_2.pdf) - William Anthony Granville (PDF)
 * [Essentials of Metaheuristics](http://cs.gmu.edu/~sean/book/metaheuristics/) - Sean Luke
 * [First Course in Algebra (1910)](http://djm.cc/library/First_Algebra_Hawkes_Luby_Touton_edited.pdf) - Herbert E. Hawkes, William A. Luby, Frank C. Touton (PDF)
+* [Foundations of Combinatorics with Applications](https://www.math.ucsd.edu/~ebender/CombText/) - Edward A. Bender and S. Gill Williamson
 * [Foundations of Constructive Probability Theory](https://arxiv.org/pdf/1906.01803.pdf) - Yuen-Kwok Chan (PDF)
+* [Geometry with an Introduction to Cosmic Topology](https://mphitchman.com) - Michael P. Hitchman
 * [Graph Theory](http://compalg.inf.elte.hu/~tony/Oktatas/TDK/FINAL/)
-* [Introduction to Probability](http://www.dartmouth.edu/~chance/teaching_aids/books_articles/probability_book/book.html) - Charles M. Grinstead and J. Laurie Snell
+* [How We Got from There to Here: A Story of Real Analysis](https://milneopentextbooks.org/how-we-got-from-there-to-here-a-story-of-real-analysis/) - Robert Rogers and Eugene Boman
+* [Introduction to Probability](https://www.dartmouth.edu/~chance/teaching_aids/books_articles/probability_book/book.html) - Charles M. Grinstead and J. Laurie Snell
 * [Introduction to Probability and Statistics Spring 2014](http://ocw.mit.edu/courses/mathematics/18-05-introduction-to-probability-and-statistics-spring-2014/)
 * [Introduction to Proofs](http://joshua.smcvt.edu/proofs/) - Jim Hefferon
+* [Introduction to Real Analysis](https://digitalcommons.trinity.edu/mono/7/) - William F. Trench
 * [Introduction to Statistical Thought](http://people.math.umass.edu/~lavine/Book/book.html) - Michael Lavine
+* [Introductory Statistics for the Life and Biomedical Sciences](https://www.openintro.org/book/isrs/) - Julie Vu and David Harrington
 * [Kalman and Bayesian Filters in Python](https://github.com/rlabbe/Kalman-and-Bayesian-Filters-in-Python)
 * [Knapsack Problems - Algorithms and Computer Implementations](http://www.or.deis.unibo.it/knapsack.html) - Silvano Martello and Paolo Toth
 * [Lecture Notes of Linear Algebra](http://home.iitk.ac.in/~psraj/mth102/lecture_notes.html) - Dr. P. Shunmugaraj, IIT Kanpur (PDF)
 * [Lies, Damned Lies, or Statistics: How to Tell the Truth with Statistics](https://www.poritz.net/jonathan/share/ldlos.pdf) - Jonathan A. Poritz (PDF)
 * [Linear Algebra](http://home.iitk.ac.in/~arlal/book/la.pdf) - Dr. Arbind K Lal, Sukant Pati (PDF) (:construction: *in process*)
 * [Linear Algebra](https://www.math.ucdavis.edu/~linear/linear-guest.pdf) (PDF)
-* [Linear Algebra by Jim Hefferon](http://joshua.smcvt.edu/linearalgebra) - Jim Hefferon
+* [Linear Algebra](http://joshua.smcvt.edu/linearalgebra/) - Jim Hefferon
+* [Linear Algebra Done Wrong](https://www.math.brown.edu/streil/papers/LADW/LADW.html) - Sergei Treil
 * [Linear Algebra, Infinite Dimensions, and Maple](https://people.math.gatech.edu/~herod/Hspace/Hspace.html) - James Herod
 * [Linear Methods of Applied Mathematics](http://www.mathphysics.com/pde) - Evans M. Harrell II and James V. Herod
 * [Magic Squares and Cubes (1917)](http://djm.cc/library/Magic_Squares_Cubes_Andrews_edited.pdf) - W. S. Anderson (PDF)
+* [Math in Society](https://www.opentextbookstore.com/mathinsociety/) - David Lippman
+* [Mathematical Analysis I](http://www.trillia.com/zakon-analysisI.html) - Elias Zakon
+* [Mathematical Discovery](https://classicalrealanalysis.info/com/Mathematical-Discovery.php) - Andrew M. Bruckner, Brian S. Thomson, and Judith B. Bruckner
 * [Mathematical Logic - an Introduction](http://www.ii.uib.no/~michal/und/i227/book/book.pdf) (PDF)
+* [Mathematical Reasoning: Writing and Proof](https://www.tedsundstrom.com/mathematical-reasoning-3) - Ted Sundstrom
 * [Mathematics, MTH101A](http://home.iitk.ac.in/~psraj/mth101/) - P. Shunmugaraj, IIT Kanpur
 * [Modern Statistics for Modern Biology](https://www.huber.embl.de/msmb) - Susan Holmes and Wolfgang Huber
 * [Multivariable Calculus](https://people.math.gatech.edu/~cain/notes/calculus.html) - George Cain and James Herod
 * [Non-Uniform Random Variate Generation](http://luc.devroye.org/rnbookindex.html) - Luc Devroye (PDF)
+* [Notes on Diffy Qs](https://www.jirka.org/diffyqs/) - Jiří Lebl
 * [Number Theory](https://github.com/holdenlee/number-theory) - Holden Lee MIT
+* [Number Theory: In Context and Interactive](http://math.gordon.edu/ntic/) - Karl-Dieter Crisman
 * [Odds and Ends: Introducing Probability & Decision with a Visual Emphasis](https://jonathanweisberg.org/vip/) - Jonathan Weisberg
-* [OpenIntro Statistics](https://www.openintro.org/stat/textbook.php)
+* [Online Statistics Education](http://onlinestatbook.com) - David Lane
+* [OpenIntro Statistics](https://www.openintro.org/stat/textbook.php) - David M. Diez, Christopher D. Barr, Mine Çetinkaya-Rundel
+* [ORCCA: Open Resources for Community College Algebra](https://spaces.pcc.edu/pages/viewpage.action?pageId=52729944) - Portland Community College
 * [Ordinary Differential Equations](https://en.wikibooks.org/wiki/Ordinary_Differential_Equations) - Wikibooks
 * [Plane Geometry (1913)](http://djm.cc/library/Plane_Geometry_Wentworth_Smith_edited.pdf) - George Wentworth and David Eugene Smith (PDF)
 * [Planes and Spherical Trigonometry (1915)](http://djm.cc/library/Plane_Spherical_Trigonometry_Wentworth_Smith_edited_2.pdf) - George Wentworth and David Eugene Smith (PDF)
-* [Precalculus](https://stitz-zeager.com/szprecalculus07042013.pdf) - Carl Stitz and Jeff Zeager (PDF)
+* [Precalculus](https://stitz-zeager.com) - Carl Stitz and Jeff Zeager [(PDF)](https://stitz-zeager.com/szprecalculus07042013.pdf)
 * [Probability and Statistics Cookbook](http://statistics.zone)
 * [Probability and Statistics EBook](http://wiki.stat.ucla.edu/socr/index.php/Probability_and_statistics_EBook)
+* [Probability: Lectures and Labs](https://www.markhuberdatascience.org/probability-textbook) - Mark Huber
 * [Recreations in Math](http://djm.cc/library/Recreations_in_Mathematics_Licks_edited.pdf) - H. E. Licks (PDF)
+* [Sage for Undergraduates](http://www.gregorybard.com/books.html) - Gregory Bard
 * [Second Course in Algebra](http://djm.cc/library/Second_Algebra_Hawkes_Luby_Touton_edited.pdf) - Herbert E. Hawkes, William A. Luby, Frank C. Touton (PDF)
 * [Seven Sketches in Compositionality: An Invitation to Applied Category Theory](https://arxiv.org/pdf/1803.05316.pdf) - Brendan Fong and David I. Spivak (PDF)
 * [Statistical Thinking for the 21st Century](https://statsthinking21.org) - Russell A. Poldrack
 * [Statistics Done Wrong](http://www.statisticsdonewrong.com) - Alex Reinhart
+* [SticiGui](https://www.stat.berkeley.edu/~stark/SticiGui/) - Philip Stark
+* [Tea Time Numerical Analysis](https://lqbrin.github.io/tea-time-numerical/) - Leon Q. Brin
 * [The Joy of Cryptography (2020)](https://web.engr.oregonstate.edu/~rosulekm/crypto/) - Mike Rosulek (PDF) (:construction: *in process*)
 * [Think Bayes: Bayesian Statistics Made Simple](http://www.greenteapress.com/thinkbayes/) - Allen B. Downey
 * [Think Stats: Probability and Statistics for Programmers](http://greenteapress.com/thinkstats/) - Allen B. Downey (using Python)
-* [Vector calculus](http://www.mecmath.net/calc3book.pdf) - Michael Corral (PDF)
+* [Vector Calculus](http://www.mecmath.net) - Michael Corral
 * [Yet Another Introductory Number Theory Textbook](https://www.poritz.net/jonathan/share/yaintt.pdf) - Jonathan A. Poritz (PDF)