src/HOLCF/ssum2.thy
author wenzelm
Thu Aug 27 20:46:36 1998 +0200 (1998-08-27)
changeset 5400 645f46a24c72
parent 243 c22b85994e17
permissions -rw-r--r--
made tutorial first;
     1 (*  Title: 	HOLCF/ssum2.thy
     2     ID:         $Id$
     3     Author: 	Franz Regensburger
     4     Copyright   1993 Technische Universitaet Muenchen
     5 
     6 Class Instance ++::(pcpo,pcpo)po
     7 *)
     8 
     9 Ssum2 = Ssum1 + 
    10 
    11 arities "++" :: (pcpo,pcpo)po
    12 (* Witness for the above arity axiom is ssum1.ML *)
    13 
    14 rules
    15 
    16 (* instance of << for type ['a ++ 'b]  *)
    17 
    18 inst_ssum_po	"(op <<)::['a ++ 'b,'a ++ 'b]=>bool = less_ssum"
    19 
    20 end
    21 
    22 
    23