diff options
Diffstat (limited to 'contrib/setoid_ring/Ring.v')
| -rw-r--r-- | contrib/setoid_ring/Ring.v | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/contrib/setoid_ring/Ring.v b/contrib/setoid_ring/Ring.v index 167e026f..1a4e1cc7 100644 --- a/contrib/setoid_ring/Ring.v +++ b/contrib/setoid_ring/Ring.v @@ -9,6 +9,7 @@ Require Import Bool. Require Export Ring_theory. Require Export Ring_base. +Require Export InitialRing. Require Export Ring_tac. Lemma BoolTheory : @@ -25,7 +26,7 @@ reflexivity. destruct x; reflexivity. Qed. -Unboxed Definition bool_eq (b1 b2:bool) := +Definition bool_eq (b1 b2:bool) := if b1 then b2 else negb b2. Lemma bool_eq_ok : forall b1 b2, bool_eq b1 b2 = true -> b1 = b2. |