Definitions num thy 1 Sections StandardLIB Doc
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Some definitions of interest.
gcd_pDef GCD(a;b;y) == y | a & y | b & (z:z | a & z | b  z | y)
Thm* a,b,y:. GCD(a;b;y Prop
natDef  == {i:| 0i }
Thm*   Type
sq_existsDef x:AB(x) == {x:AB(x) }

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intnatural_numbersetuniversemember
propimpliesandall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions num thy 1 Sections StandardLIB Doc