lean2/library/logic/axioms/propext.lean

/-
Copyright (c) 2015 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.

Module: logic.axioms.funext
Author: Leonardo de Moura

Propositional extensionality.
-/
axiom propext {a b : Prop} : a ↔ b → a = b
feat(library/logic/axioms): break prop_complete into propext and em The user may want to use propext without assuming em. 2015-04-01 01:51:43 +00:00			`/-`
			`Copyright (c) 2015 Microsoft Corporation. All rights reserved.`
			`Released under Apache 2.0 license as described in the file LICENSE.`

			`Module: logic.axioms.funext`
			`Author: Leonardo de Moura`

			`Propositional extensionality.`
			`-/`
			`axiom propext {a b : Prop} : a ↔ b → a = b`