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At: gcd exists n 1 1 1
1. b : 
2. b1:. b1<b  (a:. y:. GCD(a;b1;y))
3. a : 
4. b = 0
  GCD(a;0;a)
By: BackThru Thm* a:. GCD(a;0;a)

Generated subgoals:

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intnatural_numberless_thanequalimpliesallexists
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(10steps total) PrintForm Definitions Lemmas num thy 1 Sections StandardLIB Doc