proposition: Lemma aR_gt0 i : 0 < (a i)%:~R :> algC.
proof: Proof. by rewrite ltr0n. Qed.
imports: ZArith mathcomp(all_ssreflect all_algebra all_field) extra_mathcomp tactics binomialz floor arithmetics posnum rat_of_Z hanson_elem_arith hanson_elem_analysis