Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2005-11-03 18:29:13 -0800 (Thu, 03 Nov 2005)
Revision: 8088
Log message:

      - Proved the nilSqequal rule (it used to be primitive).
      - Some more progress verifying ITT Core under the pairwise functionality.