By: |
z-ak (f:({a...z}Peg). (f(a) = p & f(z) p (x:{a...z-1}. (u:{a...x}. f(u) = p) & f(x+1) p)) Asserted |
1 |
z-ak (f:({a...z}Peg). (f(a) = p & f(z) p (x:{a...z-1}. (u:{a...x}. f(u) = p) & f(x+1) p)) | 11 steps |
2 |
2. z-ak 2. 2. (f:({a...z}Peg). 2. (f(a) = p & f(z) p (x:{a...z-1}. (u:{a...x}. f(u) = p) & f(x+1) p)) a:, z:{a...}, f:({a...z}Peg). f(a) = p & f(z) p (x:{a...z-1}. (u:{a...x}. f(u) = p) & f(x+1) p) | 1 step |
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