proposition: Lemma size_mul_trunc n p q: size (mul_trunc n p q) = n.+1.
proof: Proof. by rewrite /size size_mkseq. Qed.
imports: Coq(ZArith Reals) Coquelicot(Coquelicot) mathcomp.ssreflect(ssreflect ssrfun ssrbool eqtype ssrnat seq fintype bigop) Flocq(Core) Stdlib MathComp Interval Xreal Basic_rec