X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fmatita%2Fnlibrary%2Flogic%2Fequality.ma;h=8ae1bcde4c0c8640136d3232f2af7ed391726143;hb=c68f6ae61227544df47512b14e1a74d270dfbb6d;hp=6fdac61b9cf424b4c7ebf2457167d1b959636a9f;hpb=870b9b017da98021d9163bf45efe9c27b40bb33d;p=helm.git

diff --git a/helm/software/matita/nlibrary/logic/equality.ma b/helm/software/matita/nlibrary/logic/equality.ma
index 6fdac61b9..8ae1bcde4 100644
--- a/helm/software/matita/nlibrary/logic/equality.ma
+++ b/helm/software/matita/nlibrary/logic/equality.ma
@@ -117,6 +117,8 @@ napply (R3 ????????? e0 ? e1 ? e2);
 napply a4;
 nqed.
 
+naxiom streicherK : ∀T:Type[0].∀t:T.∀P:t = t → Type[2].P (refl ? t) → ∀p.P p. 
+
 ndefinition EQ: ∀A:Type[0]. equivalence_relation A.
  #A; napply mk_equivalence_relation
   [ napply eq