Nuprl - Some Definitions

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	Some definitions of interest.

hrep_num	Def rep_num == n:. ncompose(suc_rep;n;zero_rep)

	Thm* rep_num (hnum hind)

choose	Def @x:T. P(x) == InjCase(lem({x:T\| P(x) }); x. x, arb(T))

	Thm* T:S, P:(TType). (@x:T. P(x)) T

hind	Def hind ==

	Thm* hind S

hnum	Def hnum ==

	Thm* hnum S

nat	Def == {i:\| 0i }

	Thm* Type

	Thm* S

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