Nuprl - Proof: prev nat pair wf 1

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At: prev nat pair wf 1

1. x :

2. y :

<x,y> = <0,0>

if x=

<y-1,0> else <x-1,y+1> fi

By:	SplitITE Concl

Generated subgoal:

1 4. x = 0
y-1
3 steps

About:

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