Definitions int 2 Sections StandardLIB Doc
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Some definitions of interest.
int_isegDef {i...j} == {k:ik & kj }
Thm* i,j:. {i...j Type
natDef  == {i:| 0i }
Thm*   Type

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intnatural_numbersetuniversememberandall!abstraction
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Definitions int 2 Sections StandardLIB Doc