In this video, we demonstrate how to construct the ring of matrices over a given coefficient ring R.This is lecture 37 (part 4/5) of the ... ... <看更多>

Let Eij be the matrix whose i,j entry is 1, and all other entries are 0. Then the equations EiiA=AEii. for 1≤i≤n implies that A is necessarily diagonal. ... <看更多>