Definitions FTA Sections DiscrMathExt Doc
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Some definitions of interest.
prime_natsDef  Prime == {x:| prime(x) }
natDef   == {i:| 0i }
Thm*    Type
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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Definitions FTA Sections DiscrMathExt Doc