How can I take the determinant of a 2x2 block matrix knowing that the matrices on the diagonal are singular?

I have a block matrix of the form: M = [A B         C D] A is nxn and D is mxm (so that B is nxm and C is mxn, i.e. B and C are not necessarily square). If A is nonsingular, then the determinant...

05 May 2015 8,694 8 View