(5steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: unb inf not fin 1 1 1
1. A : Type
2. Unbounded(A)
3. n : 
4. A ~ n
5. ((n+1) inj A)
  False
By: Rewrite-1 by A ~ n

Generated subgoal:

1 6. ((n+1) inj n)
  False
1 step

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

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