Great thoughts .... I haven't thought of this "representation theory aspect" of LA ! thanks. (And also introduction to SymPy. interesting)

Ivan, thanks for sharing the background concepts Prof. Strang has told us.

Yes, I am a big fan of him, and I came up with this idea during several email exchanges with him.

Hello, I'm the author of the article, thanks for the nice comments.

This article should have been titled as "Graphic Notes on Linear Algebra for Everyone", and Prof. Strang kindly suggested this big name. I was lucky that this drew this attention.

There are some other visuals I'm trying around the area. - Eigenvalues https://anagileway.com/2021/10/01/map-of-eigenvalues/

-Matrix classification https://anagileway.com/2020/09/29/matrix-world-in-linear-alg...

When I was an undergraduate, I didn't get this understanding of linear algebra... but after watching all the Prof. Strang's 18.06 classes in MIT OpenCourseWare, now I have much clear view of this area... So I really appreciate his way of teaching.

BTW, I even made a T-shirt and sent him ! https://anagileway.com/2020/06/04/prof-gilbert-strang-linear...