changeset 13745 | a31e04831dd1 |
parent 13735 | 7de9342aca7a |
child 13781 | ecb2df44253e |
--- a/NEWS Tue Dec 10 10:40:32 2002 +0100 +++ b/NEWS Wed Dec 11 10:12:48 2002 +0100 @@ -90,6 +90,8 @@ *** HOL *** +* GroupTheory: new, experimental summation operator for abelian groups. + * New tactic "trans_tac" and method "trans" instantiate Provers/linorder.ML for axclasses "order" and "linorder" (predicates "<=", "<" and "=").