Nuprl - Proof: hanoi step at change2 1 1

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At: hanoi step at change2 1 1

1. n :

2. f : {1...n}

Peg
3. g : {1...n}

Peg
4. k : {1...n}
5.

i:{1...n}. f(i) = g(i)

k
6.

i:{1...k-1}. f(i)

f(k) & g(i)

g(k)

f(k)

g(k)

By:	Inst: Hyp:-2 Using:[k]

Generated subgoal:

1 7. f(k) = g(k)  k  k
8. (f(k) = g(k))  (k  k)
  f(k)  g(k)
1 step

About:

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