Nuprl - Some Definitions

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	Some definitions of interest.

assert	Def b == if b True else False fi

	Thm* b:. b Prop

eq_int	Def i=j == if i=j true ; false fi

	Thm* i,j:. (i=j)

nat_plus	Def == {i:\| 0<i }

	Thm* Type

qdenom	Def q.den == 2of(q)

	Thm* q:. q.den

qnumer	Def q.num == 1of(q)

	Thm* q:. q.num

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