fact: Definition bareiss (n: nat) (M: 'M[R]_(1 + n)) := bareiss_rec 1 M.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq path ssralg) mathcomp(fintype perm choice matrix bigop zmodp poly polydiv mxpoly) CoqEAL(ssrcomplements minor dvdring) polydvd