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[smlnj] View of /sml/trunk/src/MLRISC/graphs/group.sig
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View of /sml/trunk/src/MLRISC/graphs/group.sig

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Revision 651 - (download) (as text) (annotate)
Thu Jun 1 18:34:03 2000 UTC (19 years, 4 months ago) by monnier
File size: 366 byte(s)
bring revisions from the vendor branch to the trunk
(*
 * Commutative groups.
 * 
 * -- Allen
 *)

signature ABELIAN_GROUP =
sig
   type elem 
   val +    : elem * elem -> elem
   val -    : elem * elem -> elem
   val ~    : elem -> elem
   val zero : elem
   val <    : elem * elem -> bool
   val ==   : elem * elem -> bool
end

signature ABELIAN_GROUP_WITH_INF =
sig

   include ABELIAN_GROUP
   val inf : elem

end

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