(35steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
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At: nsub inj exteq nsub surj 1 1 1 1
1. k : 
2. f : k inj k
3. f  kk
4. Inj(k; k; f)
  Surj(k; k; f)
By: Def

Generated subgoal:

1   b:k. a:k. f(a) = b
16 steps

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

(35steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc