proposition: Lemma ger1_real x : 1 <= x -> x \is real.
proof: Proof. by move=> /ger_real->. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)