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_rat	Def a =q b == a.numb.den=b.numa.den

	Thm* x,y:. x =q y

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

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

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

	Thm* q:. q.den

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

	Thm* q:. q.num

rat	Def ==

	Thm* Type

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