changeset 26806 | 40b411ec05aa |
parent 25162 | ad4d5365d9d8 |
child 27717 | 21bbd410ba04 |
--- a/src/HOL/Algebra/Sylow.thy Wed May 07 10:56:58 2008 +0200 +++ b/src/HOL/Algebra/Sylow.thy Wed May 07 10:57:19 2008 +0200 @@ -262,7 +262,7 @@ apply (rule coset_join1 [THEN in_H_imp_eq]) apply (rule_tac [3] H_is_subgroup) prefer 2 apply (blast intro: m_closed M_elem_map_carrier inv_closed) -apply (simp add: coset_mult_inv2 H_def M_elem_map_carrier subset_def) +apply (simp add: coset_mult_inv2 H_def M_elem_map_carrier subset_eq) done