Taxonomy of square n×n matrices

This is OC by myself, but from long time ago (2012). I've kept it up to date, and I still do, so if you spot any error, please comment; I will update it (here and on the blog). Link to my blog entry: https://networkscience.wordpress.com/2012/05/04/taxonomy-of-matrices/ Link on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Taxonomy_of_Complex_Matrices.svg