Introduction to Linear Algebra, Fifth Edition (2016)

Linear Algebra Book Front Cover Linear Algebra Book Back Cover

Publication May 2016

Gilbert Strang

Wellesley-Cambridge Press

Book Order from Wellesley-Cambridge Press
Book Order for SIAM members

Book Order from American Mathematical Society

Book Order from Cambridge University Press (outside North America)

Introduction to Linear Algebra, Indian edition, is available at Wellesley Publishers

ISBN: 978-09802327-7-6

Review of the 5th edition by Professor Farenick for the International Linear Algebra Society

Related websites :
Linear Algebra for Everyone (new textbook, September 2020)
Gilbert Strang's Home Page

I hope this website will become a valuable resource for everyone learning and doing linear algebra. Here are key links:

** Each section in the Table of Contents links to problem sets, solutions,
** other websites, and all material related to the topic of that section.
** Readers are invited to propose possible links (write to

Table of Contents for Introduction to Linear Algebra (5th edition 2016)


Each section of the book has a Problem Set.

Introduction to Linear Algebra, International Edition

Click here to download Selected Solutions

Practice Exam Questions

Linear Algebra Problems in Lemma

My friend Pavel Grinfeld at Drexel has sent me a collection of interesting problems -- mostly elementary but each one with a small twist. These are part of his larger teaching site called LEM.MA and he built the page for this website linked to the 5th edition.

The H.264 Video Standard (promised in Section 7.1 of the book)

This video standard describes a system for encoding and decoding (a "Codec") that engineers have defined for applications like High Definition TV. It is not expected that you will know the meaning of every word -- your book author does not know either. The point is to see an important example of a "standard" that is created by an industry after years of development--- so all companies will know what coding system their products must be consistent with.

The words "motion compensation" refer to a way to estimate each video image from the previous one. The simplest would be to guess that successive video images are the same. Then we would only need the changes between frames -- hopefully small. But if the camera is following the action, the whole scene will shift slightly and need correction. A better idea is to see which way the scene is moving and build that change into the next scene. This is MOTION COMPENSATION. In fact the motion is allowed to be different on different parts of the screen.

It is ideas like this -- easy to talk about but taking years of effort to perfect -- that make video technology and other technologies possible and successful. Engineers do their job. I hope these links give an idea of the detail needed.

Notes on Linear Algebra

Matrix World : The Picture of All Matrices

Proof of Schur's Theorem

Singular Value Decomposition of Real Matrices (Prof. Jugal Verma, IIT Bombay, March 2020)

This page has been accessed at least several times since January 2009.