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

Generated subgoal:

1   Inj(k; k; f)
12 steps

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