proposition: Lemma omf_freshT t h : t < fresh (f h) -> t < fresh h.
proof: Proof. by apply: contraTT; rewrite -!ltnNge; apply: fresh_omfT. Qed.
imports: Coq(ssreflect ssrbool ssrfun) mathcomp(ssrnat eqtype seq path interval) pcm(options prelude pred finmap rtc seqext useqord uslice uconsec)