fact: Definition Rincr (f : R -> R) := forall x y : R, P x -> P y -> (x <= y -> f x <= f y)%R.
imports: Coq(ZArith Reals Psatz) mathcomp.ssreflect(ssreflect ssrbool ssrfun eqtype ssrnat bigop) Coquelicot(Coquelicot) Stdlib MathComp Xreal Interval Taylor