Definitions HanoiTowers Sections NuprlLIB Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
hanoi_step_atDef  Moving disk k of n takes f to g
Def  == (i:{1...n}. f(i) = g(i Peg  i  k)
Def  == & (i:{1...k-1}. f(i f(k Peg & g(i g(k Peg)
Thm*  n:f,g:({1...n}Peg), k:{1...n}.
Thm*  Moving disk k of n takes f to g  Prop
hanoi_PEGDef  Peg == {1...3}
Thm*  Peg  Type
int_isegDef  {i...j} == {k:ik & kj }
Thm*  i,j:. {i...j Type
natDef   == {i:| 0i }
Thm*    Type

About:
intnatural_numbersubtractsetapplyfunction
universeequalmemberpropandall
!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions HanoiTowers Sections NuprlLIB Doc