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At: surjection type nsub surjection 1 1 1
1. a : 
2. b : 
3. a onto b
  Surj(a; a; x.x)
By: New:i Analyze THEN Reduce Concl THEN Witness: i

Generated subgoals:

None

About:
natural_numberlambda
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(5steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc