
Re: matrix multiplication with zero dimensions
Posted:
Jan 7, 2013 2:38 AM


"Roger Stafford" wrote in message <kcdmmk$ekv$1@newscl01ah.mathworks.com>... > "Matt J" wrote in message <kcdl09$975$1@newscl01ah.mathworks.com>... > > But... I still think these things should be documented somewhere. They don't satisfy the basic definitions of matrix multiplication, PROD, or SUM. They're just extrapolations of them. >        > I agree with you there. It should have been explicitly documented somewhere. > > Roger Stafford
Quoting from the doc for mtimes:
"Note If A is an mby0 empty matrix and B is a 0byn empty matrix, where m and n are positive integers, A*B is an mbyn matrix of all zeros."
James Tursa

