Nuprl - Proof: prime elim 1 1 1

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At: prime elim 1 1 1

1. p :

2. prime(p)
3.

p = 0
4.

(p ~ 1)
5.

b,c:

. (b ~ 1)

(c ~ 1)

p = b

c
6. a :

7. c :

8. p = a

(a ~ 1)

(a ~ p)

By:	Decide (a = 0)

Generated subgoals:

1 9. a = 0
(a ~ 1) (a ~ p)
1 step

2 9. a = 0
(a ~ 1) (a ~ p)
7 steps

About:

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1	9. a = 0 (a ~ 1) (a ~ p)	1 step
2	9. a = 0 (a ~ 1) (a ~ p)	7 steps