Nuprl - Proof: decidable vs unique nsub2 1 1 2

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At: decidable vs unique nsub2 1 1 2

1. P : Prop
2.

!i:

2. if i=

P else

P fi

By:	Witness: 1 THEN Analyze

Generated subgoals:

1 if 1=0 P else P fi
1 step

2 i:2. if i=0 P else P fi i = 1 2
2 steps

About:

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1	if 1=0 P else P fi	1 step
2	i:2. if i=0 P else P fi i = 1 2	2 steps