Definitions FTA Sections DiscrMathExt Doc
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Some definitions of interest.
prime_natsDef  Prime == {x:| prime(x) }
natDef   == {i:| 0i }
Thm*    Type
primeDef  prime(a) == a = 0 & (a ~ 1) & (b,c:a | bc  a | b  a | c)
Thm*  a:. prime(a Prop
notDef  A == A  False
Thm*  A:Prop. (A Prop
prime_mset_completeDef  prime_mset_complete(f)(x) == if is_prime(x) f(x) else 0 fi
Thm*  f:(Prime). prime_mset_complete(f 

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IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions FTA Sections DiscrMathExt Doc