(16steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: nsub discr range surj 1 1

1. A : Type
2. A Discrete
3. k : 
4. f : kA
5. {a:Ai:ka = f(i) }  Type
  f  k{a:Ai:ka = f(i) }


By: FunExtensionality THEN Analyze


Generated subgoal:

1 6. x : k
  i:kf(x) = f(i)

1 step

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

(16steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc