Nuprl - Proof: iff preserves decidability 1 2 1

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At: iff preserves decidability 1 2 1

1. A : Prop
2. B : Prop
3.

A
4. A

B
5. A

B
6. B

False

By:	FwdThru 5 [6] THEN Trivial

Generated subgoals:

None

About:

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