fact: Definition zipwith_seqmx (f : A -> A -> A) (M N : seqmx) := zipwith (zipwith f) M N.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq ssralg) mathcomp(path choice fintype tuple finset bigop poly matrix mxpoly) CoqEAL(hrel param refinements trivial_seq)