| Some definitions of interest. |
|
hanoi_step_at | Def 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_PEG | Def Peg == {1...3} |
| | Thm* Peg Type |
|
hanoi_otherpeg | Def otherPeg(x; y) == 6-(x+y) |
| | Thm* x,y:Peg. x y  otherPeg(x; y) Peg |
|
int_iseg | Def {i...j} == {k: | i k & k j } |
| | Thm* i,j: . {i...j} Type |
|
nat | Def == {i: | 0 i } |
| | Thm* Type |
|
nequal | Def a b T == a = b T |
| | Thm* A:Type, x,y:A. (x y) Prop |