Changes by: Xin Yu (xiny at cs.caltech.edu)
Date: 2002-04-02 00:46:33 -0800 (Tue, 02 Apr 2002)
Revision: 3559
Log message:

      Changed def of homomorphisms and reproved all rules;
      Added tactics "homIdT" and "homInvT".
      
      Not finished yet. Will do the rest after fixing errors in subgroups
      and cylic subgroups.
      

Changes	Path
+55 -51	metaprl/theories/czf/czf_itt_hom.ml
+5 -3	metaprl/theories/czf/czf_itt_hom.mli
+6230 -3869	metaprl/theories/czf/czf_itt_hom.prla