proposition: Lemma consec_slt ks t1 t2 : consec ks t1 t2 -> t1 <[ks] t2.
proof: Proof. by case/andP. Qed.
imports: Coq(ssreflect ssrbool ssrfun) mathcomp(ssrnat eqtype seq path interval order) pcm(options prelude ordtype seqext slice useqord uslice)