Changes by: Jason Hickey (jyh at cs.caltech.edu)
Date: 2006-02-22 10:32:21 -0800 (Wed, 22 Feb 2006)
Revision: 8774
Log message:

      Simplify the elimination rule by omitting dependencies on the proof
      itself.
      
         <H>; v: 'ty; x: ProvableSequent{'logic; 'A['v]}; <J['v; 'x]> >- 'C['v]