From d842be9c52a06067c1e5ad4dbccdfda4b6cc50f8 Mon Sep 17 00:00:00 2001 From: Jakob von Raumer Date: Thu, 6 Nov 2014 13:38:59 -0500 Subject: [PATCH] feat(library/hott) add univalence axiom --- library/hott/axioms/ua.lean | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 library/hott/axioms/ua.lean diff --git a/library/hott/axioms/ua.lean b/library/hott/axioms/ua.lean new file mode 100644 index 000000000..aadaefd92 --- /dev/null +++ b/library/hott/axioms/ua.lean @@ -0,0 +1,8 @@ +-- Copyright (c) 2014 Microsoft Corporation. All rights reserved. +-- Released under Apache 2.0 license as described in the file LICENSE. +-- Author: Jeremy Avigad, Jakob von Raumer +-- Ported from Coq HoTT +import hott.path hott.equiv +open path Equiv + +axiom ua {A B : Type} [H : A ≃ B] : A ≈ B