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| author |  ppedrot <ppedrot@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2013-08-02 13:57:17 +0000 |
|---|---|---|
| committer | ppedrot <ppedrot@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2013-08-02 13:57:17 +0000 |
| commit | 58b94f8491a27cc922b60b3d3021896d6329c34a (patch) | |
| tree | ba0a2930b376413c125a8d7b507be7100314d582 /theories | |
| parent | f460091e829c731a91170866f9019695a12d256c (diff) | |
Adding a dependent version of equal_f, thus fixing #3074.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16653 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories')
| -rw-r--r-- | theories/Logic/FunctionalExtensionality.v | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/theories/Logic/FunctionalExtensionality.v b/theories/Logic/FunctionalExtensionality.v index ecb7428e9..a5894fc1e 100644 --- a/theories/Logic/FunctionalExtensionality.v +++ b/theories/Logic/FunctionalExtensionality.v @@ -19,6 +19,12 @@ Proof. auto. Qed. +Lemma equal_f_dep : forall {A B} {f g : forall (x : A), B x}, + f = g -> forall x, f x = g x. +Proof. +intros A B f g <- H; reflexivity. +Qed. + (** Statements of functional extensionality for simple and dependent functions. *) Axiom functional_extensionality_dep : forall {A} {B : A -> Type}, |