(6steps total) Remark Remark PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc
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At: RussellsParadox Frege 1

1. A : Type
2. Q : AAProp
3. P:(AProp). p:Ax:AQ(x,p P(x)
  False


By: Inst: Hyp:3 Using:[P(x):= Q(x,x)] THEN Reduce Hyp:3


Generated subgoal:

1 4. p:Ax:AQ(x,p Q(x,x)
  False

4 steps

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

(6steps total) Remark Remark PrintForm Definitions Lemmas LogicSupplement Sections DiscrMathExt Doc