Nuprl - Proof: atomic char 3 1 3 1 1

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At: atomic char 3 1 3 1 1

1. a :

(a ~ 1)
3.

. b | a

(b ~ 1)

(b ~ a)
4. b :

5. c :

(b ~ 1)
7.

(c ~ 1)
8. a = b

c
9. b ~ a
10. c ~ a
11. (a

1) ~ (a

False

By:	FwdThru Thm* a,b:, n:. ((na) ~ (nb)) (a ~ b) [11]

Generated subgoals:

1 a 0
2 steps

2 12. 1 ~ c
False
1 step

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IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html