Definitions HanoiTowers Sections NuprlLIB Doc
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Continued from Standard Solution Explicitly

Each of these definitions was derived to realize the existential claims of theorems. Here is the "realized" version of the Hanoi existence theorem.

Thm*  n:, p,q:Peg.
Thm*  p  q
Thm*  
Thm*  (a:. 
Thm*  (HanoiSTD(n disks; from: p; to: q; indexing from: a)/z,s.
Thm*  (s is a Hanoi(n disk) seq on a..z
Thm*  (& s(a) = (i.p)  {1...n}Peg
Thm*  (& s(z) = (i.q)  {1...n}Peg)

And here is the realized version of the main lemma it cites.

Thm*  n:, a:, z:{a...}, m:{a...z-1}, f,g:({1...n}Peg).
Thm*  f(n)  g(n)
Thm*  
Thm*  (s1:({a...m}{1...n-1}Peg), s2:({m+1...z}{1...n-1}Peg).
Thm*  (s1 is a Hanoi(n-1 disk) seq on a..m
Thm*  (& s1(a) = f  {1...n-1}Peg
Thm*  (& s2 is a Hanoi(n-1 disk) seq on m+1..z
Thm*  (& s2(z) = g  {1...n-1}Peg
Thm*  (& s1(m) = s2(m+1)
Thm*  (& (i:{1...n-1}. s1(m,i)  f(n) & s2(m+1,i)  g(n))
Thm*  (
Thm*  ((HanoiHelper(n; s1; f; s2; g)/r1,r2.
Thm*  (((r1 @(m) r2) is a Hanoi(n disk) seq on a..z & r1(a) = f & r2(z) = g))

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

Definitions HanoiTowers Sections NuprlLIB Doc