Definitions int 2 Sections StandardLIB Doc
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Some definitions of interest.
int_segDef {i..j} == {k:i  k < j }
Thm* m,n:. {m..n Type
leltDef i  j < k == ij & j<k
natDef  == {i:| 0i }
Thm*   Type
nat_plusDef  == {i:| 0<i }
Thm*   Type

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

Definitions int 2 Sections StandardLIB Doc