src/HOL/Tools/BNF/bnf_lfp.ML
changeset 67091 1393c2340eec
parent 64413 c0d5e78eb647
child 67399 eab6ce8368fa
--- a/src/HOL/Tools/BNF/bnf_lfp.ML	Sun Nov 26 13:19:52 2017 +0100
+++ b/src/HOL/Tools/BNF/bnf_lfp.ML	Sun Nov 26 21:08:32 2017 +0100
@@ -1279,7 +1279,7 @@
           (funs ~~ @{map 2} mk_fun_insts Ts funs) @ (algs ~~ map (Thm.cterm_of lthy) ctors);
         val ctor_fold_ctors = (ctor_fold_unique_thm OF
           map (fn thm => mk_trans @{thm id_o} (mk_sym (thm RS
-            @{thm trans[OF arg_cong2[of _ _ _ _ "op o", OF refl] o_id]}))) map_id0s)
+            @{thm trans[OF arg_cong2[of _ _ _ _ "op \<circ>", OF refl] o_id]}))) map_id0s)
           |> split_conj_thm |> map mk_sym;
       in
         infer_instantiate lthy theta ctor_fold_unique_thm