fact: Definition Bezout_mx (a b : R) (m : nat) (k : 'I_m) := let:(_,u,v,a1,b1) := egcdr a b in combine_mx u v (-b1) a1 k.
imports: HB(structures) Coq(ssreflect ssrfun ssrbool Arith.Wf_nat) mathcomp(eqtype ssrnat div seq path) mathcomp(ssralg fintype perm tuple choice generic_quotient) mathcomp(matrix bigop zmodp mxalgebra poly) stronglydiscrete