On Thursday 02 Feb 2012 18:40:09 [email protected] wrote: > I never heard of a cartesian product of matrices, > only that the tensor product of operators is > called Kronecker product in the case of matrices, > together with a convention how to map M_m \otimes M_n > to M_{mn}.
Hi Franz, My understanding is that if Kronecker product (tensorProduct) is denoted by A (x) B where A is an n-by-n matrix and B is an m-by-m matrix then the Kronecker sum (cartesianProduct) is A (+) B = A (x) Im + In (x) B where In is an n-by-n identity matrix and Im is an m-by-m identity matrix Is this not correct? Martin -- You received this message because you are subscribed to the Google Groups "FriCAS - computer algebra system" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/fricas-devel?hl=en.
