diff options
| author |  Stephane Glondu <steph@glondu.net> | 2010-07-21 09:46:51 +0200 |
|---|---|---|
| committer | Stephane Glondu <steph@glondu.net> | 2010-07-21 09:46:51 +0200 |
| commit | 5b7eafd0f00a16d78f99a27f5c7d5a0de77dc7e6 (patch) | |
| tree | 631ad791a7685edafeb1fb2e8faeedc8379318ae /theories/Logic/IndefiniteDescription.v | |
| parent | da178a880e3ace820b41d38b191d3785b82991f5 (diff) | |
Imported Upstream snapshot 8.3~beta0+13298
Diffstat (limited to 'theories/Logic/IndefiniteDescription.v')
| -rw-r--r-- | theories/Logic/IndefiniteDescription.v | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/theories/Logic/IndefiniteDescription.v b/theories/Logic/IndefiniteDescription.v index 740b889a..3651c1b2 100644 --- a/theories/Logic/IndefiniteDescription.v +++ b/theories/Logic/IndefiniteDescription.v @@ -6,7 +6,7 @@ (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(*i $Id: IndefiniteDescription.v 10170 2007-10-03 14:41:25Z herbelin $ i*) +(*i $Id$ i*) (** This file provides a constructive form of indefinite description that allows to build choice functions; this is weaker than Hilbert's @@ -19,11 +19,11 @@ Require Import ChoiceFacts. Set Implicit Arguments. Axiom constructive_indefinite_description : - forall (A : Type) (P : A->Prop), + forall (A : Type) (P : A->Prop), (exists x, P x) -> { x : A | P x }. Lemma constructive_definite_description : - forall (A : Type) (P : A->Prop), + forall (A : Type) (P : A->Prop), (exists! x, P x) -> { x : A | P x }. Proof. intros; apply constructive_indefinite_description; firstorder. |