matrix multiplication

(2.1 hours to learn)

Summary

Matrix multiplication is an operator on matrices which satisfies many of the properties of multiplication, although not commutativity.

Context

This concept has the prerequisites:

Core resources (read/watch one of the following)

-Free-

Khan Academy: Linear Algebra
Other notes:
  • Watch the lecture sequence "Functions and linear transformations" if you're not used to thinking of matrices as linear transformations.
MIT Open Courseware: Linear Algebra (2011)
Videos for an introductory linear algebra course focusing on numerical methods.
Author: Gilbert Strang

-Paid-

Supplemental resources (the following are optional, but you may find them useful)

-Free-

A First Course in Linear Algebra (2012)
A linear algebra textbook with proofs.
Author: Robert A. Beezer

See also