lcp [Thu, 06 Apr 1995 12:22:26 +0200] rev 1020
Modified proofs for new hyp_subst_tac, and simplified them.
lcp [Thu, 06 Apr 1995 12:20:48 +0200] rev 1019
Received some local definitions from AC_Equiv.thy.
lcp [Thu, 06 Apr 1995 12:19:34 +0200] rev 1018
Moved some local definitions to WO6_WO1.ML
lcp [Thu, 06 Apr 1995 12:17:40 +0200] rev 1017
Proved if_iff and used it to simplify proof of if_type.
lcp [Thu, 06 Apr 1995 12:15:27 +0200] rev 1016
Now the classical sets include UN_E, to avoid calling hyp_subst_tac
lcp [Thu, 06 Apr 1995 12:11:05 +0200] rev 1015
Changed proof of domain_ord_iso_map_subset for new hyp_subst_tac
lcp [Thu, 06 Apr 1995 12:08:43 +0200] rev 1014
Added Id: line
lcp [Thu, 06 Apr 1995 12:06:09 +0200] rev 1013
Deleted call to flexflex_tac
lcp [Thu, 06 Apr 1995 12:03:01 +0200] rev 1012
Added Id: line
lcp [Thu, 06 Apr 1995 11:59:34 +0200] rev 1011
Recoded with help from Toby to use rewriting instead of the
subst rule -- the latter was too slow. But it must resort to the subst rule
if the equality contains Vars.