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
leDef AB == B<A
Thm* i,j:. (ij Prop
nat_plusDef  == {i:| 0<i }
Thm*   Type

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intnatural_numberless_thansetuniversememberpropall!abstraction
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Definitions int 2 Sections StandardLIB Doc