Step
*
2
1
of Lemma
cycle_wf2
1. n : ℕ
2. L : ℕn List
3. x : ℕn
4. y : ℕn
5. no_repeats(ℕn;L) ∧ (||L|| = n ∈ ℤ)
⊢ ∃n@0:ℕ. ((cycle(L)^n@0 x) = y ∈ ℕn)
BY
{ xxxAssert ⌜(x ∈ L) ∧ (y ∈ L)⌝⋅xxx }
1
.....assertion.....
1. n : ℕ
2. L : ℕn List
3. x : ℕn
4. y : ℕn
5. no_repeats(ℕn;L) ∧ (||L|| = n ∈ ℤ)
⊢ (x ∈ L) ∧ (y ∈ L)
2
1. n : ℕ
2. L : ℕn List
3. x : ℕn
4. y : ℕn
5. no_repeats(ℕn;L) ∧ (||L|| = n ∈ ℤ)
6. (x ∈ L) ∧ (y ∈ L)
⊢ ∃n@0:ℕ. ((cycle(L)^n@0 x) = y ∈ ℕn)
Latex:
Latex:
1. n : \mBbbN{}
2. L : \mBbbN{}n List
3. x : \mBbbN{}n
4. y : \mBbbN{}n
5. no\_repeats(\mBbbN{}n;L) \mwedge{} (||L|| = n)
\mvdash{} \mexists{}n@0:\mBbbN{}. ((cycle(L)\^{}n@0 x) = y)
By
Latex:
xxxAssert \mkleeneopen{}(x \mmember{} L) \mwedge{} (y \mmember{} L)\mkleeneclose{}\mcdot{}xxx
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