Definitions int 2 Sections StandardLIB Doc
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Some definitions of interest.
div_nrelDef Div(a;n;q) == nq  a < n(q+1)
Thm* a:n:q:. Div(a;n;q Prop
leltDef i  j < k == ij & j<k
natDef  == {i:| 0i }
Thm*   Type
nat_plusDef  == {i:| 0<i }
Thm*   Type

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Definitions int 2 Sections StandardLIB Doc