(7steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
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At: not nat occ natfuns 1 1 1

1. () ~ 
2. f : 
3. Inj(f)
4. Surj(f)
  False


By: Witness-1: i.f(i,i)+1


Generated subgoal:

1 5. a:f(a) = (i.f(i,i)+1)
  False

3 steps

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

(7steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc