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authorJosh Chen2020-05-25 16:27:37 +0200
committerJosh Chen2020-05-25 16:27:37 +0200
commit2f63e165d696688f0fcc721289889a8baa00cc02 (patch)
tree065e93b955c587a407b41c78c33da1347a077b47 /spartan/theories/Identity.thy
parent5e18f1964efca8e73c3bda1967803b6b85feb27c (diff)
slightly nicer homotopy proofs with calculations
Diffstat (limited to 'spartan/theories/Identity.thy')
-rw-r--r--spartan/theories/Identity.thy3
1 files changed, 2 insertions, 1 deletions
diff --git a/spartan/theories/Identity.thy b/spartan/theories/Identity.thy
index 01bea46..3a982f6 100644
--- a/spartan/theories/Identity.thy
+++ b/spartan/theories/Identity.thy
@@ -41,7 +41,8 @@ axiomatization where
lemmas
[intros] = IdF IdI and
[elims "?p" "?a" "?b"] = IdE and
- [comps] = Id_comp
+ [comps] = Id_comp and
+ [refl] = IdI
section \<open>Path induction\<close>