(9steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: card prod family intseg singleton elim 1 3

1. a : 
2. a' : 
3. a'-a = 1
4. B : {a..a'}Type
5. a  {a:}
6. B  {a:}Type
  (i:{a..a'}B(i)) ~ B(a)


By: OOCinterpolate (i:{a:}B(i))
THENW
(Auto THEN BackThru: Thm*  a,a':a'-a = 1  ({a..a'} =ext {a:}))


Generated subgoals:

1   (i:{a..a'}B(i)) ~ (i:{a:}B(i))
2 steps
2   (i:{a:}B(i)) ~ B(a)
1 step

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

(9steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc