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src/HOL/Equiv_Relations.thy
changeset 67399 eab6ce8368fa
parent 66364 fa3247e6ee4b
child 71393 fce780f9c9c6 
--- a/src/HOL/Equiv_Relations.thy	Wed Jan 10 15:21:49 2018 +0100
+++ b/src/HOL/Equiv_Relations.thy	Wed Jan 10 15:25:09 2018 +0100
@@ -472,7 +472,7 @@
 lemma equivp_reflp_symp_transp: "equivp R \<longleftrightarrow> reflp R \<and> symp R \<and> transp R"
   by (auto intro: equivpI elim: equivpE)
 
-lemma identity_equivp: "equivp (op =)"
+lemma identity_equivp: "equivp (=)"
   by (auto intro: equivpI reflpI sympI transpI)
 
 lemma equivp_reflp: "equivp R \<Longrightarrow> R x x"
isabelle