CoCoA:IsDiagonal
From ApCoCoAWiki
IsDiagonal
checks if a matrix is diagonal
Description
This function tests whether the square matrix M is diagonal.
Example
M := Mat([
[0, 1, 2],
[-1, 0, 3],
[-2, -3, 0]
]);
IsDiagonal(M);
FALSE
-------------------------------
Syntax
IsDiagonal(M: MAT): BOOL
<type>matrix</type> <type>boolean</type>
