Nuprl - Proof: RussellsParadox Frege2 1 1 1

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At: RussellsParadox Frege2 1 1 1

1. Set : Type
2. : Set

Set

Prop
3.

P:(Set

Prop).

p:Set.

x:Set. (x p)

P(x)
4. p : Set
5.

x:Set. (x p)

(x x)

False

By:	Witness5: p

Generated subgoal:

1 5. (p p) (p p)
False
2 steps

About:

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