Definitions num thy 1 Sections StandardLIB Doc
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Some definitions of interest.
assocedDef a ~ b == a | b & b | a
Thm* a,b:. (a ~ b)  Prop
dividesDef b | a == c:. a = bc
Thm* a,b:. (a | b)  Prop
int_nzeroDef  == {i:| i  0 }
Thm*   Type
notDef A == A  False
Thm* A:Prop. (A)  Prop

About:
intnatural_numbermultiplysetuniverseequalmemberprop
impliesandfalseallexists!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions num thy 1 Sections StandardLIB Doc