Nuprl - Proof: prime nat 3 1 2 a

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At: prime nat 3 1 2 a

1. x :

2. 2

x
3.

(

i:{2..x

}. i | x)
4. b :

5. b | x

(b ~ 1)

(b ~ x)

By:	\|b\| \| x Asserted THENA (Subst: x = \|x\| THENA BackThru: Thm* i:. \|i\| = i (THEN (Sel 2 BackThru: Thm* a,b:. \|a\| \| \|b\| a \| b)

Generated subgoal:

1 5. |b| | x
(b ~ 1) (b ~ x)
2 steps

About:

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