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At: dec pred imp bool decider exists 1 1 1 1

1. A : Type
2. P : AType
3. x:A. Dec(P(x))
4. f : A
5. x:Af(x P(x)
6. g : A
7. x:Ag(x P(x)
8. x:Af(x g(x)
  f = g


By: FunExtensionality


Generated subgoal:

1 9. x : A
  f(x) = g(x)

1 step

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

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