Mathematics
A Computational Introduction to Number Theory and Algebra
Victor Shoup, New York University
This introductory book emphasizes algorithms and applications, such as cryptography and error correcting codes, and is accessible to a broad audience. The presentation alternates between theory and applications in order to motivate and illustrate the mathematics. The mathematical coverage includes the basics of number theory, abstract algebra and discrete probability theory.
(3 reviews)
A First Course in Linear Algebra
Robert A. Beezer, University of Puget Sound
A First Course in Linear Algebra is an introductory textbook aimed at collegelevel sophomores and juniors. Typically students will have taken calculus, but it is not a prerequisite. The book begins with systems of linear equations, then covers matrix algebra, before taking up finitedimensional vector spaces in full generality. The final chapter covers matrix representations of linear transformations, through diagonalization, change of basis and Jordan canonical form. Determinants and eigenvalues are covered along the way.
(6 reviews)
A First Course in Linear Algebra
Ken Kuttler, Brigham Young University
This text, originally by K. Kuttler, has been redesigned by the Lyryx editorial team as a first course in linear algebra for science and engineering students who have an understanding of basic algebra.
(4 reviews)
A Gentle Introduction to the Art of Mathematics
Joseph E. Fields, Southern Connecticut State University
This book is designed for the transition course between calculus and differential equations and the upper division mathematics courses with an emphasis on proof and abstraction.
(1 review)
A Primer of Real Analysis
Dan Sloughter, Furman University
This is a short introduction to the fundamentals of real analysis.
(0 reviews)
Abstract Algebra: Theory and Applications
Thomas W. Judson, Stephen F. Austin State University
This text is intended for a one or twosemester undergraduate course in abstract algebra. Traditionally, these courses have covered the theoretical aspects of groups, rings, and fields. However, with the development of computing in the last several decades, applications that involve abstract algebra and discrete mathematics have become increasingly important, and many science, engineering, and computer science students are now electing to minor in mathematics. Though theory still occupies a central role in the subject of abstract algebra and no student should go through such a course without a good notion of what a proof is, the importance of applications such as coding theory and cryptography has grown significantly.
(2 reviews)
Active Calculus 2.0
David Austin, Grand Valley State University
Matt Boelkins, Grand Valley State University
Steve Schlicker, Grand Valley State University
Active Calculus is different from most existing calculus texts in at least the following ways: the text is freely readable online in HTML format and is also available for in PDF; in the electronic format, graphics are in full color and there are live links to java applets; version 2.0 now contains WeBWorK exercises in each chapter, which are fully interactive in the HTML format and included in print in the PDF; the text is open source, and interested users can gain access to the original source files on GitHub; the style of the text requires students to be active learners — there are very few worked examples in the text, with there instead being 34 activities per section that engage students in connecting ideas, solving problems, and developing understanding of key calculus concepts; each section begins with motivating questions, a brief introduction, and a preview activity, all of which are designed to be read and completed prior to class; following the WeBW
(4 reviews)
Active Calculus Multivariable
David Austin, Grand Valley State University
Matthew Boelkins, Grand Valley State University
Steve Schlicker, Grand Valley State University
Active Calculus Multivariable is the continuation of Active Calculus to multivariable functions.
(0 reviews)
Advanced Problems in Mathematics: Preparing for University
Stephen Siklos, Cambridge University
This book is intended to help students prepare for entrance examinations in mathematics and scientific subjects, including STEP (Sixth Term Examination Papers).
(0 reviews)
Algebra and Trigonometry
Multiple Authors , Openstax College
Algebra and Trigonometry provides a comprehensive and multilayered exploration of algebraic principles. The text is suitable for a typical introductory Algebra & Trigonometry course.
(5 reviews)
Algorithms and Data Structures With Applications to Graphics and Geometry
Jurg Nievergelt, ETH Zurich
Klaus Hinrichs, University of Muenster
An introductory coverage of algorithms and data structures with application to graphics and geometry.
(1 review)
APEX Calculus
Brian Heinold, Mount St. Mary’s University
Dimplekumar Chalishajar, Virginia Military Institute
Gregory Hartman, Virginia Military Institute
Troy Siemers, Virginia Military Institute
APEX Calculus is a calculus textbook written for traditional college/university calculus courses. It has the look and feel of the calculus book you likely use right now (Stewart, Thomas & Finney, etc.). The explanations of new concepts is clear, written for someone who does not yet know calculus. Each section ends with an exercise set with ample problems to practice & test skills (odd answers are in the back).
(3 reviews)
Applied Combinatorics
Mitchel T. Keller, Washington and Lee University
William T. Trotter, Georgia Institute of Technology
Applied Combinatorics is an opensource textbook for a course covering the fundamental enumeration techniques (permutations, combinations, subsets, pigeon hole principle), recursion and mathematical induction, more advanced enumeration techniques (inclusionexclusion, generating functions, recurrence relations, Polyá theory), discrete structures (graphs, digraphs, posets, interval orders), and discrete optimization (minimum weight spanning trees, shortest paths, network flows). There are also chapters introducing discrete probability, Ramsey theory, combinatorial applications of network flows, and a few other nuggets of discrete mathematics.
(0 reviews)
Applied Discrete Structures
Alan Doerr, University of Massachusetts Lowell
Kenneth Levasseur, University of Massachusetts Lowell
The text is divided into lecturelength sections, facilitating the organization of an instructor's presentation.Topics are presented in such a way that students' understanding can be monitored through thoughtprovoking exercises. The exercises require an understanding of the topics and how they are interrelated, not just a familiarity with the key words.
(2 reviews)
Applied Finite Mathematics
Applied Finite Mathematics covers topics including linear equations, matrices, linear programming, the mathematics of finance, sets and counting, probability, Markov chains, and game theory.
(0 reviews)
Applied Probability
Paul Pfeiffer, Rice University
In addition to an introduction to the essential features of basic probability in terms of a precise mathematical model, the work describes and employs user defined MATLAB procedures and functions (which we refer to as mprograms, or simply programs) to solve many important problems in basic probability. This should make the work useful as a stand alone exposition as well as a supplement to any of several current textbooks. Some key contributors are acknowledged.
(0 reviews)
Basic Analysis: Introduction to Real Analysis
Jirí Lebl, Oklahoma State University
This free online textbook (ebook in webspeak) is a one semester course in basic analysis.
(2 reviews)
Book of Proof
Dr. Richard Hammack, Virginia Commonwealth University
Book of Proof is an introduction to the language and methods of mathematical proofs. The text is meant to bridge the computational courses that students typically encounter in their first years of college (such as calculus or differential equations) to more theoretical, proofbased courses such as topology, analysis and abstract algebra. Topics include sets, logic, counting, methods of conditional and nonconditional proof, disproof, induction, relations, functions and infinite cardinality.
(4 reviews)
Calculus
Gilbert Strang, MIT
Published in 1991 and still in print from WellesleyCambridge Press, the book is a straightforward introductory calculus textbook available free online to educators and selflearners alike. It is covers single variable and multivariable calculus, including applications.
(1 review)
Calculus for the Life Sciences: A Modeling Approach Volume 1
James L. Cornette, Iowa State University
Ralph A. Ackerman, Iowa State University
This text is a product of a twosemester calculus course for life sciences students in which students gathered biological data in a laboratory setting that was used to motivate the concepts of calculus. The book contains data from experiments, but does not require that students do laboratory experiments.
(0 reviews)
Calculus for the Life Sciences: A Modeling Approach Volume 2
James L. Cornette, Iowa State University
Ralph A. Ackerman
This text is a product of a twosemester calculus course for life sciences students in which students gathered biological data in a laboratory setting that was used to motivate the concepts of calculus. The book contains data from experiments, but does not require that students do laboratory experiments.
(0 reviews)
Calculus One
Multiple Authors, Mooculus
This text is based on David Guichard’s opensource calculus text which in turn is a modification and expansion of notes written by Neal Koblitz at the University of Washington.
(0 reviews)
Calculus Volume 1
Edwin Herman, University of WisconsinStevens Point
Gilbert Strang, MIT
Calculus is designed for the typical two or threesemester general calculus course, incorporating innovative features to enhance student learning.
(6 reviews)
Calculus Volume 2
Gilbert Strang, Massachusetts Institute of Technology
Calculus is designed for the typical two or threesemester general calculus course, incorporating innovative features to enhance student learning. The book guides students through the core concepts of calculus and helps them understand how those concepts apply to their lives and the world around them.
(0 reviews)
Calculus Volume 3
Gilbert Strang, Massachusetts Institute of Technology
Calculus is designed for the typical two or threesemester general calculus course, incorporating innovative features to enhance student learning. The book guides students through the core concepts of calculus and helps them understand how those concepts apply to their lives and the world around them.
(0 reviews)
Calculus: Early Transcendentals
David Guichard, Whitman College
Calculus: Early Transcendentals, originally by D. Guichard, has been redesigned by the Lyryx editorial team. Substantial portions of the content, examples, and diagrams have been redeveloped, with additional contributions provided by experienced and practicing instructors. This approachable text provides a comprehensive understanding of the necessary techniques and concepts of the typical Calculus course sequence, and is suitable for the standard Calculus I, II and III courses.
(4 reviews)
Collaborative Statistics
Barbara Illowsky, De Anza College
Susan Dean, De Anza College
Collaborative Statistics was developed over several years and has been used in regular and honorslevel classroom settings and in distance learning classes. This textbook is intended for introductory statistics courses being taken by students at two– and four–year colleges who are majoring in fields other than math or engineering. Intermediate algebra is the only prerequisite. The book focuses on applications of statistical knowledge rather than the theory behind it.
(9 reviews)
College Algebra
Dr. Carl Stitz, Lakeland Community College
Dr. Jeff Zeager, Lorain County Community College
College Algebra is an introductory text for a college algebra survey course. The material is presented at a level intended to prepare students for Calculus while also giving them relevant mathematical skills that can be used in other classes. The authors describe their approach as "Functions First," believing introducing functions first will help students understand new concepts more completely.
(9 reviews)
College Algebra
Multiple Authors , Openstax College
College Algebra provides a comprehensive and multilayered exploration of algebraic principles. The text is suitable for a typical introductory Algebra course.
(2 reviews)
College Trigonometry
Carl Stitz, Lakeland Community College
Jeff Zeager, Lorain County Community College
Covers chapters 1011 of Precalculus.
(1 review)
Combinatorics Through Guided Discovery
Kenneth P. Bogart, Dartmouth College
This book is an introduction to combinatorial mathematics, also known as combinatorics. The book focuses especially but not exclusively on the part of combinatorics that mathematicians refer to as “counting.” The book consists almost entirely of problems.
(1 review)
Discrete Mathematics: An Open Introduction
Oscar Levin, University of Northern Colorado
Discrete Mathematics: An Open Introduction is a free, open source textbook appropriate for a first or second year undergraduate course for math majors, especially those who will go on to teach.
(2 reviews)
Elementary Algebra
John Redden, College of the Sequoias
Elementary Algebra, is an introductory text that focuses on the study of algebra at the beginning stages. It assumes no prior algebraic experience and is intended for any student who needs build a strong algebraic foundation. The book presents real world applications, setting a foundation for students to translate problems described in words into mathematical equations. The book illustrates the steps required to solve equations and interpret the results through the use of exercise sets and practice problems. The book stresses both the importance to solve problems correctly, and to learn to communicate those solutions to others.
(8 reviews)
Elementary Algebra
Denny Burzynski, College of Southern Nevada
Wade Ellis, West Valley Community College
Elementary Algebra is a work text that covers the traditional topics studied in a modern elementary algebra course. Use of this book will help the student develop the insight and intuition necessary to master algebraic techniques and manipulative skills.
(0 reviews)
Elementary Algebra
Lynn Marecek, Santa Ana College
MaryAnne AnthonySmith, Santa Ana College
Elementary Algebra is designed to meet the scope and sequence requirements of a onesemester elementary algebra course.
(0 reviews)
Elementary Differential Equations with Boundary Value Problems
William F. Trench, Trinity University
Elementary Differential Equations with Boundary Value Problems is written for students in science, engineering, and mathematics who have completed calculus through partial differentiation.
(1 review)
Euclidean plane and its relatives
Anton Petrunin, Penn State
This book is designed for a semesterlong course in Foundations of Geometry and meant to be rigorous, conservative, elementary and minimalistic.
(0 reviews)
Fundamentals of Mathematics
Denny Burzynski, College of Southern Nevada
Wade Ellis, West Valley Community College
Fundamentals of Mathematics is a work text that covers the traditional study in a modern prealgebra course, as well as the topics of estimation, elementary analytic geometry, and introductory algebra.
(5 reviews)
How We Got from There to Here: A Story of Real Analysis
Eugene Boman, The Pennsylvania State University
Robert Rogers, State University of New York
This book proposes that an effective way to motivate these definitions is to tell one of the stories (there are many) of the historical development of the subject, from its intuitive beginnings to modern rigor. The definitions and techniques are motivated by the actual difficulties encountered by the intuitive approach and are presented in their historical context.
(2 reviews)
Intermediate Algebra
John Redden, College of the Sequoias
Traditionally, the study of algebra is separated into a two parts, Elementary and Intermediate Algebra. This textbook by John Redden, Intermediate Algebra, is the second part. Written in a clear and concise manner, it carefully builds on the basics learned in Elementary Algebra and introduces the more advanced topics required for further study in applications found in most disciplines.
(1 review)
Introduction to Mathematical Analysis I  Second Edition
Beatriz Lafferriere, Portland State University
Gerardo Lafferriere, Portland State University
Mau Nam Nguyen, Portland State University
Our goal with this textbook is to provide students with a strong foundation in mathematical analysis. Such a foundation is crucial for future study of deeper topics of analysis. Students should be familiar with most of the concepts presented here after completing the calculus sequence. However, these concepts will be reinforced through rigorous proofs.
(0 reviews)
Introduction to Probability
Charles M. Grinstead, Swarthmore College
J. Laurie Snell, Dartmouth College
This text is designed for an introductory probability course taken by sophomores, juniors, and seniors in mathematics, the physical and social sciences, engineering, and computer science. It presents a thorough treatment of probability ideas and techniques necessary for a firm understanding of the subject. The text can be used in a variety of course lengths, levels, and areas of emphasis.
(4 reviews)
Introduction to Real Analysis
William F. Trench, Trinity University
This is a text for a twoterm course in introductory real analysis for junior or senior mathematics majors and science students with a serious interest in mathematics. Prospective educators or mathematically gifted high school students can also benefit from the mathematical maturity that can be gained from an introductory real analysis course.
(0 reviews)
Introduction to Statistics
David Lane, Rice University
Introduction to Statistics is a resource for learning and teaching introductory statistics.
(1 review)
Introductory Business Statistics
Thomas K. Tiemann, Elon University
The book "Introductory Business Statistics" by Thomas K. Tiemann explores the basic ideas behind statistics, such as populations, samples, the difference between data and information, and most importantly sampling distributions.
(1 review)
Introductory Business Statistics with Interactive Spreadsheets – 1st Canadian Edition
Mohammad Mahbobi, Thompson Rivers University
Thomas K. Tiemann, Elon University
Introductory Business Statistics with Interactive Spreadsheets  1st Canadian Edition is an adaptation of Thomas K. Tiemann's book, Introductory Business Statistics. This new edition also allows readers to learn the basic and most commonly applied statistical techniques in business in an interactive way  when using the web version  through interactive Excel spreadsheets. All information has been revised to reflect Canadian content.
(0 reviews)
Introductory Statistics
Douglas S. Shafer, University of North Carolina
Zhiyi Zhang, University of North Carolina
Shafer and Zhang wrote Introductory Statistics by using their vast teaching experience to present a complete look at introductory statistics topics while keeping in mind a realistic expectation with respect to course duration and students’ maturity level.
(7 reviews)
Introductory Statistics
Multiple Authors, Openstax College
Introductory Statistics follows the scope and sequence of a onesemester, introduction to statistics course and is geared toward students majoring in fields other than math or engineering.
(11 reviews)
Linear Algebra
Jim Hefferon, Saint Michael's College
This text covers the standard material for a US undergraduate first course: linear systems and Gauss's Method, vector spaces, linear maps and matrices, determinants, and eigenvectors and eigenvalues, as well as additional topics such as introductions to various applications.
(3 reviews)
Linear Algebra
Andrew K. Waldon, UC Davis
David Cherney, UC Davis
Tom Denton, The Fields Institute and York University
This book is designed both for engineering and science majors, but has enough abstraction to be useful for potential math majors.
(1 review)
Linear Algebra, Theory And Applications
Kenneth Kuttler, Bringham Young University
This is a book on linear algebra and matrix theory. While it is self contained, it will work best for those who have already had some exposure to linear algebra. It is also assumed that the reader has had calculus. Some optional topics require more analysis than this, however.
(1 review)
Linear Regression Using R: An Introduction to Data Modeling
David J. Lilja, University of Minnesota
Linear Regression Using R: An Introduction to Data Modeling presents one of the fundamental data modeling techniques in an informal tutorial style.
(1 review)
Math in Society
David Lippman, Pierce College
Math in Society is a free, open textbook. This book is a survey of contemporary mathematical topics, most nonalgebraic, appropriate for a collegelevel topics course for liberal arts majors.
(4 reviews)
Mathematical Reasoning: Writing and Proof, Version 2.1
Ted Sundstrom, Grand Valley State University
Mathematical Reasoning: Writing and Proof is designed to be a text for the ?rst course in the college mathematics curriculum that introduces students to the processes of constructing and writing proofs and focuses on the formal development of mathematics. The primary goals of the text are to help students:
 Develop logical thinking skills and to develop the ability to think more abstractly in a proof oriented setting.
 Develop the ability to construct and write mathematical proofs using standard methods of mathematical proof including direct proofs, proof by contradiction, mathematical induction, case analysis, and counterexamples.
 Develop the ability to read and understand written mathematical proofs.
 Develop talents for creative thinking and problem solving.

Improve their quality of communication in mathematics. This includes improving writing techniques, reading comprehension, and oral
(0 reviews)
My Math GPS: Elementary Algebra Guided Problem Solving (2016 Edition)
Jonathan Cornick, Queensborough Community College
Karan Puri
Michael Guy, Queensborough Community College
My Math GPS: Elementary Algebra Guided Problem Solving is a textbook that aligns to the CUNY Elementary Algebra Learning Objectives that are tested on the CUNY Elementary Algebra Final Exam (CEAFE).
(0 reviews)
Notes on Diffy Qs: Differential Equations for Engineers
Jirí Lebl, Oklahoma State University
A one semester first course on differential equations, aimed at engineering students.
(1 review)
Open Logic Project
Andrew Arana, University of Paris
Audrey Yap, University of Victoria
Gillian Russell, University of North Carolina
Jeremy Avigad, Carnegie Mellon University
Nicole Wyatt, University of Calgary
Richard Zach, University of Calgary
Walter Dean, University of Warwick
The Open Logic Project is a collection of teaching materials on mathematical logic aimed at a nonmathematical audience, intended for use in advanced logic courses as taught in many philosophy departments.
(0 reviews)
OpenIntro Statistics
Christopher D. Barr, Harvard School of Public Health
David M. Diez, Harvard School of Public Health
Mine CetinkayaRundel, Duke University
OpenIntro Statistics 3rd Edition strives to be a complete introductory textbook of the highest caliber. Its core derives from the classic notions of statistics education and is extended by recent innovations. The textbook meets high quality standards and has been used at Princeton, Vanderbilt, UMass Amherst, and many other schools. We look forward to expanding the reach of the project and working with teachers from all colleges and schools.
(10 reviews)
Prealgebra
Multiple Authors, Openstax College
Prealgebra is a textbook for a onesemester course that serves as a bridge between arithmetic and algebra. It can be used in courses named “Basic Mathematics,” “Introductory Algebra,” “Fundamentals of Algebra,” and so on. The organization makes it easy to adapt the book to suit a variety of course syllabi.
(9 reviews)
Precalculus
Carl Stitz, Lakeland Community College
Jeff Zeager, Lorain County Community College
A casual glance through the Table of Contents of most of the major publishers’ College Algebra books reveals nearly isomorphic content in both order and depth. Our Table of Contents shows a different approach, one that might be labeled “Functions First.” To truly use The Rule of Four, that is, in order to discuss each new concept algebraically, graphically, numerically and verbally, it seems completely obvious to us that one would need to introduce functions first. (Take a moment and compare our ordering to the classic “equations first, then the Cartesian Plane and THEN functions” approach seen in most of the major players.) We then introduce a class of functions and discuss the equations, inequalities (with a heavy emphasis on sign diagrams) and applications which involve functions in that class.
(1 review)
Precalculus
Multiple Authors, Openstax College
Precalculus is intended for collegelevel precalculus students. Since precalculus courses vary from one institution to the next, we have attempted to meet the needs of as broad an audience as possible, including all of the content that might be covered in any particular course.
(1 review)
Precalculus
Holly Carley, NYC College of Technology
Thomas Tradler, NYC College of Technology
These are notes for a course in precalculus, as it is taught at New York City College of Technology  CUNY (where it is offered under the course number MAT 1375). Our approach is calculator based. For this, we will use the currently standard TI84 calculator, and in particular, many of the examples will be explained and solved with it. However, we want to point out that there are also many other calculators that are suitable for the purpose of this course and many of these alternatives have similar functionalities as the calculator that we have chosen to use. An introduction to the TI84 calculator together with the most common applications needed for this course is provided in appendix A. In the future we may expand on this by providing introductions to other calculators or computer algebra systems.
(0 reviews)
Precalculus: An Investigation of Functions
David Lippman, Pierce College
Melonie Rasmussen, Pierce College
Precalculus: An Investigation of Functions is a free, open textbook covering a twoquarter precalculus sequence including trigonometry.
(3 reviews)
Principles of Business Statistics
This textbook provides a brief introduction to the field of statistics, including examples of how these topics shows up in a variety of reallife examples.
(1 review)
Proofs and Concepts: The Fundamentals of Abstract Mathematics
Dave Witte Morris, University of Lethbridge
Joy Morris, University of Lethbridge
This free undergraduate textbook provides an introduction to proofs, logic, sets, functions, and other fundamental topics of abstract mathematics.
(0 reviews)
Single Variable Calculus I: Early Transcendentals
David Guichard, Whitman College
The original version of the text was written by David Guichard. The single variable material is a modification and expansion of notes written by Neal Koblitz at the University of Washington, who generously gave permission to use, modify, and distribute his work. New material has been added, and old material has been modified, so some portions now bear little resemblance to the original. The text also includes some exercises and examples from Elementary Calculus: An Approach Using Infinitesimals, by H. Jerome Keisler under a Creative Commons license. In addition, the chapter on differential equations and the section on numerical integration are largely derived from the corresponding portions of Keisler’s book. Albert Schueller, Barry Balof, and Mike Wills have also contributed additional material..
(1 review)
Spiral Workbook for Discrete Mathematics
Harris Kwong, State University of New York (SUNY) Fredonia
This is a text that covers the standard topics in a sophomorelevel course in discrete mathematics: logic, sets, proof techniques, basic number theory, functions, relations, and elementary combinatorics, with an emphasis on motivation. It explains and clarifies the unwritten conventions in mathematics, and guides the students through a detailed discussion on how a proof is revised from its draft to a final polished form. Handson exercises help students understand a concept soon after learning it. The text adopts a spiral approach: many topics are revisited multiple times, sometimes from a different perspective or at a higher level of complexity. The goal is to slowly develop students’ problemsolving and writing skills.
(2 reviews)
Statistical Inference For Everyone
Brian Blais, Bryant University
This is a new approach to an introductory statistical inference textbook, motivated by probability theory as logic.
(0 reviews)
Trigonometry
Steven Schlicker, Grand Valley State University
Ted Sundstrom, Grand Valley State University
This trigonometry textbook is different than other trigonometry books in that it is free to download, and the reader is expected to do more than read the book and is expected to study the material in the book by working out examples rather than just reading about them.
(0 reviews)
Vector Calculus
Michael Corral, Schoolcraft College
This is a text on elementary multivariable calculus, designed for students who have completed courses in singlevariable calculus. The traditional topics are covered: basic vector algebra; lines, planes and surfaces; vectorvalued functions; functions of 2 or 3 variables; partial derivatives; optimization; multiple integrals; line and surface integrals.
(0 reviews)
Whitman Calculus
Dr David Guichard, Whitman College
An introductory level single variable calculus book, covering standard topics in differential and integral calculus, and infinite series. Late transcendentals and multivariable versions are also available.
(6 reviews)
Yet Another Calculus Text
Dan Sloughter, Furman University
This book is an introduction to calculus based on the hyperreal number system.
(0 reviews)