proposition: Lemma incB_ones n : incB (ones n) = zero _.
proof: Proof. destruct n; first apply trivialBits. apply toZp_inj. autorewrite with ZpHom. by rewrite addNr. Qed.
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq fintype tuple zmodp div) ssrextra.tuple ssrextra.nat spec spec.properties operations mathcomp(ssralg)