Nuprl Definition : es-before
before(e) == fix((λes-before,e. if first(e) then [] else (es-before pred(e)) @ [pred(e)] fi )) e
Definitions occuring in Statement :
es-first: first(e),
es-pred: pred(e),
append: as @ bs,
cons: [a / b],
nil: [],
ifthenelse: if b then t else f fi ,
apply: f a,
fix: fix(F),
lambda: λx.A[x]
FDL editor aliases :
es-before
es-before
before(e) == fix((\mlambda{}es-before,e. if first(e) then [] else (es-before pred(e)) @ [pred(e)] fi )) e
Date html generated:
2015_07_17-AM-08_40_15
Last ObjectModification:
2013_03_25-PM-01_40_20
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