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Some definitions of interest.
div_floor Def a n == if 0aa n ;((-a) rem n)=0-((-a) n) else -((-a) n)+-1 fi
Thm* a:, n:. (a n)
modulus Def a mod n == if 0aa rem n ;((-a) rem n)=00 else n-((-a) rem n) fi
Thm* a:, n:. (a mod n)
nat_plus Def == {i:| 0 < i }
Thm* Type

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ifthenelseintnatural_numberminusaddsubtractdivideremainder
less_thansetuniversememberall!abstraction

Definitions graph 1 1 Sections Graphs Doc