proposition: Lemma neqR10 : (1 : R) != 0.
proof: Proof. exact: (Real.one_nonzero R). Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div order) mathcomp(ssralg ssrnum ssrint rat intdiv) Coq(Morphisms Setoid) fourcolor(real realsyntax)