proposition: Lemma det0 n' : \det (0 : 'M[R]_n'.+1) = 0.
proof: Proof. by rewrite -(scale0r 0) detZ exprS !mul0r. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype finfun bigop finset fingroup perm order) mathcomp(div prime binomial ssralg countalg finalg zmodp)