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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. |