(7steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: card nat vs nat tuple 2 1

1. k : 
2. 1<k
3. ((k-1)) ~ 
  (k) ~ ()


By: Rewrite by
Thm*  a,b:c:{a...b}, B:({a..b}Type).
Thm*  (i:{a..b}B(i)) ~ ((i:{a..c}B(i))(i:{c..b}B(i)))
Using:[a:= 0 | b:= k | c:= k-1]


Generated subgoal:

1   (((k-1))({(k-1)..k})) ~ ()
2 steps

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

(7steps total) PrintForm Definitions Lemmas DiscreteMath Sections DiscrMathExt Doc