proposition: Lemma oexlt_rcons_same V R a ks k (h : natmap V) (z0 : R) : k \notin ks -> oexec_lt a (rcons ks k) k h z0 = oevalv a ks h z0.
proof: Proof. by move=>U; rewrite /oexec_lt eqsl_uL_rconsE eqxx /= (negbTE U). Qed.
imports: Coq(ssreflect ssrbool ssrfun) mathcomp(ssrnat eqtype seq path interval) pcm(options prelude pred finmap rtc seqext useqord uslice uconsec)