berghofe [Wed, 11 Jan 2006 18:21:23 +0100] rev 18658
Implemented proof of (strong) induction rule.
berghofe [Wed, 11 Jan 2006 18:20:59 +0100] rev 18657
Added theorem at_finite_select.
urbanc [Wed, 11 Jan 2006 17:12:30 +0100] rev 18656
added lemmas perm_empty, perm_insert to do with
permutations on sets
urbanc [Wed, 11 Jan 2006 17:10:11 +0100] rev 18655
merged the silly lemmas into the eqvt proof of subtype
urbanc [Wed, 11 Jan 2006 17:07:57 +0100] rev 18654
tuned proofs
urbanc [Wed, 11 Jan 2006 14:00:11 +0100] rev 18653
tuned the eqvt-proof
urbanc [Wed, 11 Jan 2006 12:21:01 +0100] rev 18652
rolled back the last addition since these lemmas were already
in the simpset.
urbanc [Wed, 11 Jan 2006 12:14:25 +0100] rev 18651
added the thms-collection "pt_id" (collection of all pt_<ak>1 lemmas)
urbanc [Wed, 11 Jan 2006 12:11:53 +0100] rev 18650
tuned
paulson [Wed, 11 Jan 2006 11:00:26 +0100] rev 18649
tidied, and added missing thm divide_less_eq_1_neg