fact: Definition SF_val_fun {T} (f : R -> T) (a b : R) (n : nat) (x : R) : T := SF_fun_f2 (fun x y => f ((x+y)/2)) (unif_part a b n) x.
imports: Coq(Reals Psatz ssreflect ssrbool) mathcomp(seq) Rcomplements Rbar Lub Hierarchy