oheimb [Thu, 15 Feb 2001 16:01:07 +0100] rev 11139
moved wellorder_LeastI,wellorder_Least_le,wellorder_not_less_Least
from Nat.ML to Wellfounded_Recursion.ML
moved Least_equality from Nat.ML to Ord.thy
moved wf_less from Nat.ML to NatDef.ML
added wellorder axclass
nonempty_has_least of Nat.ML -> ex_has_least_nat of Wellfounded_Relations.ML
added min_of_mono, max_of_mono, max_leastL, max_leastR to Ord.thy
oheimb [Thu, 15 Feb 2001 16:00:44 +0100] rev 11138
simplified proof of Least_mono
oheimb [Thu, 15 Feb 2001 16:00:42 +0100] rev 11137
added wellorder axclass
oheimb [Thu, 15 Feb 2001 16:00:40 +0100] rev 11136
moved inv_image to Relation
oheimb [Thu, 15 Feb 2001 16:00:38 +0100] rev 11135
moved wf_less from Nat.ML to NatDef.ML
oheimb [Thu, 15 Feb 2001 16:00:36 +0100] rev 11134
added nat as instance of new wellorder axclass
oheimb [Thu, 15 Feb 2001 16:00:35 +0100] rev 11133
Ord.thy/.ML converted to Isar
oheimb [Thu, 15 Feb 2001 15:56:51 +0100] rev 11132
added trial proof