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authorGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2006-01-31 10:34:10 +0000
committerGravatar herbelin <herbelin@85f007b7-540e-0410-9357-904b9bb8a0f7>2006-01-31 10:34:10 +0000
commite858cea149dfffd35ff85fb647b0356564058883 (patch)
tree4079d322eb532bdf11dfc054a1a44f906cb97ed4 /theories/Bool/Bool.v
parent4adf4ecc7fcf585f4a932284bdd664b71adc8154 (diff)
Ajout décidabilité
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@7965 85f007b7-540e-0410-9357-904b9bb8a0f7
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diff --git a/theories/Bool/Bool.v b/theories/Bool/Bool.v
index 0643ba540..4b41ca746 100755
--- a/theories/Bool/Bool.v
+++ b/theories/Bool/Bool.v
@@ -541,3 +541,10 @@ Proof.
Qed.
Hint Resolve bool_1 bool_2 bool_3 bool_4 bool_5 bool_6.
+
+(** Decidability *)
+
+Lemma bool_dec : forall a b : bool, {a = b} + { a <> b}.
+Proof.
+ decide equality.
+Defined.