Step
*
1
2
1
1
of Lemma
gamma-neighbourhood-prop6
1. beta : ℕ ⟶ ℕ
2. n0 : finite-nat-seq()
3. x : ℕ
4. n : ℕ
5. ¬↑init-seg-nat-seq(ext-finite-nat-seq(n0**λk.(x + 1)^(1);0)^(n);n0)
6. ¬((beta x) = 0 ∈ ℤ)
7. x@0 : ℕ
8. x3 : ↑init-seg-nat-seq(n0**λi.x@0^(1);ext-finite-nat-seq(n0**λk.(x + 1)^(1);0)^(n))
9. x5 : ¬((beta x@0) = 0 ∈ ℤ)
10. x6 : ∀y:ℕx@0. ((beta y) = 0 ∈ ℤ)
⊢ False
BY
{ (Assert ⌜x@0 = (x + 1) ∈ ℤ⌝⋅ THENM Auto) }
1
.....assertion.....
1. beta : ℕ ⟶ ℕ
2. n0 : finite-nat-seq()
3. x : ℕ
4. n : ℕ
5. ¬↑init-seg-nat-seq(ext-finite-nat-seq(n0**λk.(x + 1)^(1);0)^(n);n0)
6. ¬((beta x) = 0 ∈ ℤ)
7. x@0 : ℕ
8. x3 : ↑init-seg-nat-seq(n0**λi.x@0^(1);ext-finite-nat-seq(n0**λk.(x + 1)^(1);0)^(n))
9. x5 : ¬((beta x@0) = 0 ∈ ℤ)
10. x6 : ∀y:ℕx@0. ((beta y) = 0 ∈ ℤ)
⊢ x@0 = (x + 1) ∈ ℤ
Latex:
Latex:
1. beta : \mBbbN{} {}\mrightarrow{} \mBbbN{}
2. n0 : finite-nat-seq()
3. x : \mBbbN{}
4. n : \mBbbN{}
5. \mneg{}\muparrow{}init-seg-nat-seq(ext-finite-nat-seq(n0**\mlambda{}k.(x + 1)\^{}(1);0)\^{}(n);n0)
6. \mneg{}((beta x) = 0)
7. x@0 : \mBbbN{}
8. x3 : \muparrow{}init-seg-nat-seq(n0**\mlambda{}i.x@0\^{}(1);ext-finite-nat-seq(n0**\mlambda{}k.(x + 1)\^{}(1);0)\^{}(n))
9. x5 : \mneg{}((beta x@0) = 0)
10. x6 : \mforall{}y:\mBbbN{}x@0. ((beta y) = 0)
\mvdash{} False
By
Latex:
(Assert \mkleeneopen{}x@0 = (x + 1)\mkleeneclose{}\mcdot{} THENM Auto)
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