src/HOL/Auth/All_Symmetric.thy
changeset 62145 5b946c81dfbf
parent 61830 4f5ab843cf5b
     1.1 --- a/src/HOL/Auth/All_Symmetric.thy	Mon Jan 11 21:20:44 2016 +0100
     1.2 +++ b/src/HOL/Auth/All_Symmetric.thy	Mon Jan 11 21:21:02 2016 +0100
     1.3 @@ -4,7 +4,10 @@
     1.4  
     1.5  text \<open>All keys are symmetric\<close>
     1.6  
     1.7 -defs all_symmetric_def: "all_symmetric \<equiv> True"
     1.8 +overloading all_symmetric \<equiv> all_symmetric
     1.9 +begin
    1.10 +  definition "all_symmetric \<equiv> True"
    1.11 +end
    1.12  
    1.13  lemma isSym_keys: "K \<in> symKeys"
    1.14    by (simp add: symKeys_def all_symmetric_def invKey_symmetric)