fact: Definition PS_Int (a : nat -> R) (n : nat) : R := match n with | O => 0 | S n => a n / INR (S n) end.
imports: Coq(Reals Psatz ssreflect ssrbool) mathcomp(eqtype seq) Markov Rcomplements Rbar Lub Lim_seq Derive SF_seq Continuity Hierarchy Seq_fct RInt PSeries