proposition: Lemma skew_field_algid1 A : algid A = 1.
proof: Proof. by rewrite (unitr_algid1 (memv_algid A)) ?fieldT ?algid_neq0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype div tuple finfun bigop ssralg) mathcomp(finalg zmodp matrix vector poly)