List of Import References : 
See  BOOL 
See  Bitset 
See  DENOTATION 
See  Nat 
See  Option 
SIGNATURE BitsetFilter
$Date: 2010-09-30 18:24:17 +0200 (Do, 30. Sep 2010) $ ($Revision: 616 $)
--
IMPORT Bitset ONLY set
       Nat ONLY nat
FUN |        : (nat -> bool) ** set -> set              
                -- p | s 
                -- filter: select all elements of s fulfilling predicate p
FUN partition: (nat -> bool) ** set -> set ** set       
                -- partition (p, s) == (s1,s2)
                -- s1, s2 are subsets of s; s1 + s2 = s
                -- predicate p evaluating true for elements of s1
                -- predicate p evaluating false for elements of s2
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