During the study of linear algebra, several asistant materials are referenced:
- The opencourse 18.06 from Gilbert Strang. From Strang’s home, many valuable materials are available.
- The textbook Introduction to Linear Algebra by Gilbert Strang.
- The textbook Linear Algebra Done Right by Sheldon Axler. You can get an abridged version of Linear Algebra Done Right from Axler’s homepage.
- The textbook Matrix Analysis and Applied Linear Algebra by Carl D. Meyer.
By following Professor Strang, I got an overview of the four spaces of one matrix. Actually, I learnt the 18.06 from the MIT OCW more than one time. After each time, my understanding of linear algebra was deepened.