Nuprl Definition : es-filter-image
f[X] ==  λb.if (#(b) =z 1) then f only(b) else {} fi  o X
Definitions occuring in Statement : 
eclass-compose1: f o X
, 
ifthenelse: if b then t else f fi 
, 
eq_int: (i =z j)
, 
apply: f a
, 
lambda: λx.A[x]
, 
natural_number: $n
, 
bag-only: only(bs)
, 
bag-size: #(bs)
, 
empty-bag: {}
FDL editor aliases : 
es-filter-image
f[X]  ==    \mlambda{}b.if  (\#(b)  =\msubz{}  1)  then  f  only(b)  else  \{\}  fi    o  X
Date html generated:
2015_07_17-PM-00_48_28
Last ObjectModification:
2012_02_25-PM-01_23_19
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