src/HOL/HOL.thy
changeset 71833 ff6f3b09b8b4
parent 71827 5e315defb038
child 71842 db120661dded
--- a/src/HOL/HOL.thy	Tue May 12 10:59:59 2020 +0200
+++ b/src/HOL/HOL.thy	Tue May 12 15:11:20 2020 +0100
@@ -10,6 +10,7 @@
   "try" "solve_direct" "quickcheck" "print_coercions" "print_claset"
     "print_induct_rules" :: diag and
   "quickcheck_params" :: thy_decl
+abbrevs "?<" = "\<exists>\<^sub>\<le>\<^sub>1"
 begin
 
 ML_file \<open>~~/src/Tools/misc_legacy.ML\<close>