(12steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: nsub surj least preimage works gen 1 1 1 1

1. B : Type
2. e : BB
3. IsEqFun(B;e)
4. a : 
5. f : aB
6. Surj(aBf)
7. y : B
  i:af(i) = y


By: Witness6: y


Generated subgoal:

1 8. a:af(a) = y
  i:af(i) = y

1 step

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

(12steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc