Definitions int 2 Sections StandardLIB Doc
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Some definitions of interest.
int_lowerDef {...i} == {j:ji }
Thm* i:. {...i Type
int_nzeroDef  == {i:i  0 }
Thm*   Type
natDef  == {i:| 0i }
Thm*   Type

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intnatural_numbersetuniversememberall!abstraction
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Definitions int 2 Sections StandardLIB Doc