From 5357fe92e65712a3e2506fe0a939b358d14183d7 Mon Sep 17 00:00:00 2001 From: Andres Erbsen Date: Wed, 21 Sep 2016 20:45:01 -0400 Subject: alternative signing derivation cleanup --- src/Util/Relations.v | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/Util/Relations.v') diff --git a/src/Util/Relations.v b/src/Util/Relations.v index aa280db26..4612fa8a8 100644 --- a/src/Util/Relations.v +++ b/src/Util/Relations.v @@ -27,3 +27,8 @@ Proof. logic; try match goal with [H:_|-_] => (rewrite H || rewrite <-H); assumption end. repeat (assumption||reflexivity||econstructor); assumption. (* WHY the last [assumption]?*) Qed. + +Lemma iff_R_R_same_r {T R} {Req:@Equivalence T R} x y ref : R x y -> (R x ref <-> R y ref). +Proof. + intro Hx; rewrite Hx; clear Hx. reflexivity. +Qed. \ No newline at end of file -- cgit v1.2.3