pgnbgreunbgrlem4 - Mathbox for Alexander van der Vekens

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Theorem pgnbgreunbgrlem4 48103

Description: Lemma 4 for pgnbgreunbgr 48109. (Contributed by AV, 20-Nov-2025.)

**Hypotheses**
Ref	Expression
pgnbgreunbgr.g	⊢ 𝐺 = (5 gPetersenGr 2)
pgnbgreunbgr.v	⊢ 𝑉 = (Vtx‘𝐺)
pgnbgreunbgr.e	⊢ 𝐸 = (Edg‘𝐺)
pgnbgreunbgr.n	⊢ 𝑁 = (𝐺 NeighbVtx 𝑋)

**Assertion**
Ref	Expression
pgnbgreunbgrlem4	⊢ ((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) → ((𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) → ((𝑋 ∈ 𝑉 ∧ 𝑋 = ⟨1, 𝑦⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩)))))

Distinct variable groups: 𝑦,𝑏 𝑦,𝐸 𝑦,𝐾 𝑦,𝐿 𝑦,𝑁 𝑦,𝑉 𝑦,𝑋 Allowed substitution hints: 𝐸(𝑏) 𝐺(𝑦,𝑏) 𝐾(𝑏) 𝐿(𝑏) 𝑁(𝑏) 𝑉(𝑏) 𝑋(𝑏)

**Proof of Theorem pgnbgreunbgrlem4**
Step	Hyp	Ref	Expression
1		1ex 11111	. . . . . 6 ⊢ 1 ∈ V
2		vex 3440	. . . . . 6 ⊢ 𝑦 ∈ V
3	1, 2	op2ndd 7935	. . . . 5 ⊢ (𝑋 = ⟨1, 𝑦⟩ → (2^nd ‘𝑋) = 𝑦)
4		oveq1 7356	. . . . . . . . . . 11 ⊢ ((2^nd ‘𝑋) = 𝑦 → ((2^nd ‘𝑋) + 2) = (𝑦 + 2))
5	4	oveq1d 7364	. . . . . . . . . 10 ⊢ ((2^nd ‘𝑋) = 𝑦 → (((2^nd ‘𝑋) + 2) mod 5) = ((𝑦 + 2) mod 5))
6	5	opeq2d 4831	. . . . . . . . 9 ⊢ ((2^nd ‘𝑋) = 𝑦 → ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ = ⟨1, ((𝑦 + 2) mod 5)⟩)
7	6	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ↔ 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩))
8		opeq2 4825	. . . . . . . . 9 ⊢ ((2^nd ‘𝑋) = 𝑦 → ⟨0, (2^nd ‘𝑋)⟩ = ⟨0, 𝑦⟩)
9	8	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ↔ 𝐿 = ⟨0, 𝑦⟩))
10		oveq1 7356	. . . . . . . . . . 11 ⊢ ((2^nd ‘𝑋) = 𝑦 → ((2^nd ‘𝑋) − 2) = (𝑦 − 2))
11	10	oveq1d 7364	. . . . . . . . . 10 ⊢ ((2^nd ‘𝑋) = 𝑦 → (((2^nd ‘𝑋) − 2) mod 5) = ((𝑦 − 2) mod 5))
12	11	opeq2d 4831	. . . . . . . . 9 ⊢ ((2^nd ‘𝑋) = 𝑦 → ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩ = ⟨1, ((𝑦 − 2) mod 5)⟩)
13	12	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩ ↔ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩))
14	7, 9, 13	3orbi123d 1437	. . . . . . 7 ⊢ ((2^nd ‘𝑋) = 𝑦 → ((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ↔ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩)))
15	6	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ↔ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩))
16	8	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ↔ 𝐾 = ⟨0, 𝑦⟩))
17	12	eqeq2d 2740	. . . . . . . 8 ⊢ ((2^nd ‘𝑋) = 𝑦 → (𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩ ↔ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩))
18	15, 16, 17	3orbi123d 1437	. . . . . . 7 ⊢ ((2^nd ‘𝑋) = 𝑦 → ((𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ↔ (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, 𝑦⟩ ∨ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩)))
19	14, 18	anbi12d 632	. . . . . 6 ⊢ ((2^nd ‘𝑋) = 𝑦 → (((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩)) ↔ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, 𝑦⟩ ∨ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩))))
20		simpr 484	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩)
21		simpl 482	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩)
22	20, 21	neeq12d 2986	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → (𝐾 ≠ 𝐿 ↔ ⟨1, ((𝑦 + 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩))
23		eqid 2729	. . . . . . . . . . . . 13 ⊢ ⟨1, ((𝑦 + 2) mod 5)⟩ = ⟨1, ((𝑦 + 2) mod 5)⟩
24		eqneqall 2936	. . . . . . . . . . . . 13 ⊢ (⟨1, ((𝑦 + 2) mod 5)⟩ = ⟨1, ((𝑦 + 2) mod 5)⟩ → (⟨1, ((𝑦 + 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
25	23, 24	ax-mp 5	. . . . . . . . . . . 12 ⊢ (⟨1, ((𝑦 + 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
26	22, 25	biimtrdi 253	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → (𝐾 ≠ 𝐿 → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
27	26	impd 410	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
28	27	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ → (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
29		prcom 4684	. . . . . . . . . . . . . . . 16 ⊢ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} = {⟨0, 𝑦⟩, ⟨1, 𝑏⟩}
30	29	eleq1i 2819	. . . . . . . . . . . . . . 15 ⊢ ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 ↔ {⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸)
31		5eluz3 12784	. . . . . . . . . . . . . . . . 17 ⊢ 5 ∈ (ℤ_≥‘3)
32		pglem 48075	. . . . . . . . . . . . . . . . 17 ⊢ 2 ∈ (1..^(⌈‘(5 / 2)))
33		eqid 2729	. . . . . . . . . . . . . . . . . 18 ⊢ (1..^(⌈‘(5 / 2))) = (1..^(⌈‘(5 / 2)))
34		eqid 2729	. . . . . . . . . . . . . . . . . 18 ⊢ (0..^5) = (0..^5)
35		pgnbgreunbgr.g	. . . . . . . . . . . . . . . . . 18 ⊢ 𝐺 = (5 gPetersenGr 2)
36		pgnbgreunbgr.e	. . . . . . . . . . . . . . . . . 18 ⊢ 𝐸 = (Edg‘𝐺)
37	33, 34, 35, 36	gpgedgiov 48049	. . . . . . . . . . . . . . . . 17 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (𝑦 ∈ (0..^5) ∧ 𝑏 ∈ (0..^5))) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ 𝑦 = 𝑏))
38	31, 32, 37	mpanl12 702	. . . . . . . . . . . . . . . 16 ⊢ ((𝑦 ∈ (0..^5) ∧ 𝑏 ∈ (0..^5)) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ 𝑦 = 𝑏))
39	38	ancoms 458	. . . . . . . . . . . . . . 15 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ 𝑦 = 𝑏))
40	30, 39	bitrid 283	. . . . . . . . . . . . . 14 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 ↔ 𝑦 = 𝑏))
41		opeq2 4825	. . . . . . . . . . . . . 14 ⊢ (𝑦 = 𝑏 → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)
42	40, 41	biimtrdi 253	. . . . . . . . . . . . 13 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
43	42	adantld 490	. . . . . . . . . . . 12 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
44		preq1 4685	. . . . . . . . . . . . . . 15 ⊢ (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → {𝐾, ⟨1, 𝑏⟩} = {⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩})
45	44	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸))
46		preq2 4686	. . . . . . . . . . . . . . 15 ⊢ (𝐿 = ⟨0, 𝑦⟩ → {⟨1, 𝑏⟩, 𝐿} = {⟨1, 𝑏⟩, ⟨0, 𝑦⟩})
47	46	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ (𝐿 = ⟨0, 𝑦⟩ → ({⟨1, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸))
48	45, 47	bi2anan9r 639	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸)))
49	48	imbi1d 341	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
50	43, 49	imbitrrid 246	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
51	50	adantld 490	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
52	51	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨0, 𝑦⟩ → (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
53		prcom 4684	. . . . . . . . . . . . . . . 16 ⊢ {⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} = {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩}
54	53	eleq1i 2819	. . . . . . . . . . . . . . 15 ⊢ ({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸)
55		prcom 4684	. . . . . . . . . . . . . . . 16 ⊢ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} = {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩}
56	55	eleq1i 2819	. . . . . . . . . . . . . . 15 ⊢ ({⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸 ↔ {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸)
57	54, 56	anbi12ci 629	. . . . . . . . . . . . . 14 ⊢ (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) ↔ ({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸))
58		5nn 12214	. . . . . . . . . . . . . . . . 17 ⊢ 5 ∈ ℕ
59	58	nnzi 12499	. . . . . . . . . . . . . . . 16 ⊢ 5 ∈ ℤ
60		uzid 12750	. . . . . . . . . . . . . . . 16 ⊢ (5 ∈ ℤ → 5 ∈ (ℤ_≥‘5))
61	59, 60	ax-mp 5	. . . . . . . . . . . . . . 15 ⊢ 5 ∈ (ℤ_≥‘5)
62		4t2e8 12291	. . . . . . . . . . . . . . . . . . 19 ⊢ (4 · 2) = 8
63	62	oveq1i 7359	. . . . . . . . . . . . . . . . . 18 ⊢ ((4 · 2) mod 5) = (8 mod 5)
64		8mod5e3 47344	. . . . . . . . . . . . . . . . . 18 ⊢ (8 mod 5) = 3
65	63, 64	eqtri 2752	. . . . . . . . . . . . . . . . 17 ⊢ ((4 · 2) mod 5) = 3
66		3ne0 12234	. . . . . . . . . . . . . . . . 17 ⊢ 3 ≠ 0
67	65, 66	eqnetri 2995	. . . . . . . . . . . . . . . 16 ⊢ ((4 · 2) mod 5) ≠ 0
68	32, 67	pm3.2i 470	. . . . . . . . . . . . . . 15 ⊢ (2 ∈ (1..^(⌈‘(5 / 2))) ∧ ((4 · 2) mod 5) ≠ 0)
69	33, 34, 35, 36	gpgedg2iv 48051	. . . . . . . . . . . . . . 15 ⊢ ((5 ∈ (ℤ_≥‘5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (2 ∈ (1..^(⌈‘(5 / 2))) ∧ ((4 · 2) mod 5) ≠ 0)) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) ↔ 𝑏 = 𝑦))
70	61, 68, 69	mp3an13 1454	. . . . . . . . . . . . . 14 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) ↔ 𝑏 = 𝑦))
71	57, 70	bitrid 283	. . . . . . . . . . . . 13 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) ↔ 𝑏 = 𝑦))
72	41	eqcoms 2737	. . . . . . . . . . . . 13 ⊢ (𝑏 = 𝑦 → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)
73	71, 72	biimtrdi 253	. . . . . . . . . . . 12 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
74		preq2 4686	. . . . . . . . . . . . . . 15 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → {⟨1, 𝑏⟩, 𝐿} = {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩})
75	74	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ({⟨1, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
76	45, 75	bi2anan9r 639	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
77	76	imbi1d 341	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨1, ((𝑦 + 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
78	73, 77	imbitrrid 246	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
79	78	adantld 490	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
80	79	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
81	28, 52, 80	3jaoi 1430	. . . . . . . 8 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
82	39, 41	biimtrdi 253	. . . . . . . . . . . . 13 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
83	82	adantrd 491	. . . . . . . . . . . 12 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
84		preq1 4685	. . . . . . . . . . . . . . 15 ⊢ (𝐾 = ⟨0, 𝑦⟩ → {𝐾, ⟨1, 𝑏⟩} = {⟨0, 𝑦⟩, ⟨1, 𝑏⟩})
85	84	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ (𝐾 = ⟨0, 𝑦⟩ → ({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸))
86		preq2 4686	. . . . . . . . . . . . . . 15 ⊢ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ → {⟨1, 𝑏⟩, 𝐿} = {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩})
87	86	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ → ({⟨1, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸))
88	85, 87	bi2anan9r 639	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸)))
89	88	imbi1d 341	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
90	83, 89	imbitrrid 246	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
91	90	adantld 490	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
92	91	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ → (𝐾 = ⟨0, 𝑦⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
93		simpr 484	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → 𝐾 = ⟨0, 𝑦⟩)
94		simpl 482	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → 𝐿 = ⟨0, 𝑦⟩)
95	93, 94	neeq12d 2986	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (𝐾 ≠ 𝐿 ↔ ⟨0, 𝑦⟩ ≠ ⟨0, 𝑦⟩))
96		eqid 2729	. . . . . . . . . . . . 13 ⊢ ⟨0, 𝑦⟩ = ⟨0, 𝑦⟩
97		eqneqall 2936	. . . . . . . . . . . . 13 ⊢ (⟨0, 𝑦⟩ = ⟨0, 𝑦⟩ → (⟨0, 𝑦⟩ ≠ ⟨0, 𝑦⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
98	96, 97	ax-mp 5	. . . . . . . . . . . 12 ⊢ (⟨0, 𝑦⟩ ≠ ⟨0, 𝑦⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
99	95, 98	biimtrdi 253	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (𝐾 ≠ 𝐿 → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
100	99	impd 410	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
101	100	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨0, 𝑦⟩ → (𝐾 = ⟨0, 𝑦⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
102	82	adantrd 491	. . . . . . . . . . . 12 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
103	84	adantl 481	. . . . . . . . . . . . . . 15 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → {𝐾, ⟨1, 𝑏⟩} = {⟨0, 𝑦⟩, ⟨1, 𝑏⟩})
104	103	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸))
105	74	adantr 480	. . . . . . . . . . . . . . 15 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → {⟨1, 𝑏⟩, 𝐿} = {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩})
106	105	eleq1d 2813	. . . . . . . . . . . . . 14 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ({⟨1, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
107	104, 106	anbi12d 632	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
108	107	imbi1d 341	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
109	102, 108	imbitrrid 246	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
110	109	adantld 490	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
111	110	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → (𝐾 = ⟨0, 𝑦⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
112	92, 101, 111	3jaoi 1430	. . . . . . . 8 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (𝐾 = ⟨0, 𝑦⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
113	64, 66	eqnetri 2995	. . . . . . . . . . . . . . . 16 ⊢ (8 mod 5) ≠ 0
114	63, 113	eqnetri 2995	. . . . . . . . . . . . . . 15 ⊢ ((4 · 2) mod 5) ≠ 0
115		simpll 766	. . . . . . . . . . . . . . . 16 ⊢ (((5 ∈ (ℤ_≥‘5) ∧ ((4 · 2) mod 5) ≠ 0) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → 5 ∈ (ℤ_≥‘5))
116		simpr 484	. . . . . . . . . . . . . . . 16 ⊢ (((5 ∈ (ℤ_≥‘5) ∧ ((4 · 2) mod 5) ≠ 0) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)))
117	32	a1i 11	. . . . . . . . . . . . . . . . . 18 ⊢ (5 ∈ (ℤ_≥‘5) → 2 ∈ (1..^(⌈‘(5 / 2))))
118	117	anim1i 615	. . . . . . . . . . . . . . . . 17 ⊢ ((5 ∈ (ℤ_≥‘5) ∧ ((4 · 2) mod 5) ≠ 0) → (2 ∈ (1..^(⌈‘(5 / 2))) ∧ ((4 · 2) mod 5) ≠ 0))
119	118	adantr 480	. . . . . . . . . . . . . . . 16 ⊢ (((5 ∈ (ℤ_≥‘5) ∧ ((4 · 2) mod 5) ≠ 0) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (2 ∈ (1..^(⌈‘(5 / 2))) ∧ ((4 · 2) mod 5) ≠ 0))
120	115, 116, 119, 69	syl3anc 1373	. . . . . . . . . . . . . . 15 ⊢ (((5 ∈ (ℤ_≥‘5) ∧ ((4 · 2) mod 5) ≠ 0) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) ↔ 𝑏 = 𝑦))
121	61, 114, 120	mpanl12 702	. . . . . . . . . . . . . 14 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) ↔ 𝑏 = 𝑦))
122	121, 72	biimtrdi 253	. . . . . . . . . . . . 13 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
123	122	adantl 481	. . . . . . . . . . . 12 ⊢ ((⟨1, ((𝑦 − 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
124	123	a1i 11	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((⟨1, ((𝑦 − 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
125		simpl 482	. . . . . . . . . . . . . 14 ⊢ ((𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩) → 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩)
126		simpr 484	. . . . . . . . . . . . . 14 ⊢ ((𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩) → 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩)
127	125, 126	neeq12d 2986	. . . . . . . . . . . . 13 ⊢ ((𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩) → (𝐾 ≠ 𝐿 ↔ ⟨1, ((𝑦 − 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩))
128	127	ancoms 458	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (𝐾 ≠ 𝐿 ↔ ⟨1, ((𝑦 − 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩))
129	128	anbi1d 631	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) ↔ (⟨1, ((𝑦 − 2) mod 5)⟩ ≠ ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)))))
130		preq1 4685	. . . . . . . . . . . . . 14 ⊢ (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → {𝐾, ⟨1, 𝑏⟩} = {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩})
131	130	eleq1d 2813	. . . . . . . . . . . . 13 ⊢ (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸))
132	131, 87	bi2anan9r 639	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸)))
133	132	imbi1d 341	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨1, ((𝑦 + 2) mod 5)⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
134	124, 129, 133	3imtr4d 294	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
135	134	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
136	37	ancom2s 650	. . . . . . . . . . . . . . . . 17 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ 𝑦 = 𝑏))
137		equcom 2018	. . . . . . . . . . . . . . . . 17 ⊢ (𝑦 = 𝑏 ↔ 𝑏 = 𝑦)
138	136, 137	bitrdi 287	. . . . . . . . . . . . . . . 16 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → ({⟨0, 𝑦⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ 𝑏 = 𝑦))
139	30, 138	bitrid 283	. . . . . . . . . . . . . . 15 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 ↔ 𝑏 = 𝑦))
140	31, 32, 139	mpanl12 702	. . . . . . . . . . . . . 14 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 ↔ 𝑏 = 𝑦))
141	140, 72	biimtrdi 253	. . . . . . . . . . . . 13 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸 → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
142	141	adantld 490	. . . . . . . . . . . 12 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
143	142	adantl 481	. . . . . . . . . . 11 ⊢ ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
144	130	adantl 481	. . . . . . . . . . . . . 14 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → {𝐾, ⟨1, 𝑏⟩} = {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩})
145	144	eleq1d 2813	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ↔ {⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸))
146	47	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ({⟨1, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸))
147	145, 146	anbi12d 632	. . . . . . . . . . . 12 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸)))
148	147	imbi1d 341	. . . . . . . . . . 11 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩) ↔ (({⟨1, ((𝑦 − 2) mod 5)⟩, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, ⟨0, 𝑦⟩} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
149	143, 148	imbitrrid 246	. . . . . . . . . 10 ⊢ ((𝐿 = ⟨0, 𝑦⟩ ∧ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
150	149	ex 412	. . . . . . . . 9 ⊢ (𝐿 = ⟨0, 𝑦⟩ → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
151		eqeq2 2741	. . . . . . . . . . 11 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = 𝐿 → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ ↔ 𝐾 = 𝐿))
152	151	eqcoms 2737	. . . . . . . . . 10 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ ↔ 𝐾 = 𝐿))
153		eqneqall 2936	. . . . . . . . . . 11 ⊢ (𝐾 = 𝐿 → (𝐾 ≠ 𝐿 → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
154	153	impd 410	. . . . . . . . . 10 ⊢ (𝐾 = 𝐿 → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
155	152, 154	biimtrdi 253	. . . . . . . . 9 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
156	135, 150, 155	3jaoi 1430	. . . . . . . 8 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) → (𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
157	81, 112, 156	3jaod 1431	. . . . . . 7 ⊢ ((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, 𝑦⟩ ∨ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
158	157	imp 406	. . . . . 6 ⊢ (((𝐿 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, 𝑦⟩ ∨ 𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, ((𝑦 + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, 𝑦⟩ ∨ 𝐾 = ⟨1, ((𝑦 − 2) mod 5)⟩)) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
159	19, 158	biimtrdi 253	. . . . 5 ⊢ ((2^nd ‘𝑋) = 𝑦 → (((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩)) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
160	3, 159	syl 17	. . . 4 ⊢ (𝑋 = ⟨1, 𝑦⟩ → (((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩)) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
161		eqeq1 2733	. . . . . 6 ⊢ (𝑋 = ⟨1, 𝑦⟩ → (𝑋 = ⟨1, 𝑏⟩ ↔ ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))
162	161	imbi2d 340	. . . . 5 ⊢ (𝑋 = ⟨1, 𝑦⟩ → ((({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩) ↔ (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩)))
163	162	imbi2d 340	. . . 4 ⊢ (𝑋 = ⟨1, 𝑦⟩ → (((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩)) ↔ ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → ⟨1, 𝑦⟩ = ⟨1, 𝑏⟩))))
164	160, 163	sylibrd 259	. . 3 ⊢ (𝑋 = ⟨1, 𝑦⟩ → (((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩)) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩))))
165	164	adantl 481	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑋 = ⟨1, 𝑦⟩) → (((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) ∧ (𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩)) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩))))
166	165	expdcom 414	1 ⊢ ((𝐿 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐿 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐿 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) → ((𝐾 = ⟨1, (((2^nd ‘𝑋) + 2) mod 5)⟩ ∨ 𝐾 = ⟨0, (2^nd ‘𝑋)⟩ ∨ 𝐾 = ⟨1, (((2^nd ‘𝑋) − 2) mod 5)⟩) → ((𝑋 ∈ 𝑉 ∧ 𝑋 = ⟨1, 𝑦⟩) → ((𝐾 ≠ 𝐿 ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨1, 𝑏⟩} ∈ 𝐸 ∧ {⟨1, 𝑏⟩, 𝐿} ∈ 𝐸) → 𝑋 = ⟨1, 𝑏⟩)))))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∨ w3o 1085 = wceq 1540 ∈ wcel 2109 ≠ wne 2925 {cpr 4579 ⟨cop 4583 ‘cfv 6482 (class class class)co 7349 2^nd c2nd 7923 0cc0 11009 1c1 11010 + caddc 11012 · cmul 11014 − cmin 11347 / cdiv 11777 2c2 12183 3c3 12184 4c4 12185 5c5 12186 8c8 12189 ℤcz 12471 ℤ_≥cuz 12735 ..^cfzo 13557 ⌈cceil 13695 mod cmo 13773 Vtxcvtx 28941 Edgcedg 28992 NeighbVtx cnbgr 29277 gPetersenGr cgpg 48024

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5218 ax-sep 5235 ax-nul 5245 ax-pow 5304 ax-pr 5371 ax-un 7671 ax-cnex 11065 ax-resscn 11066 ax-1cn 11067 ax-icn 11068 ax-addcl 11069 ax-addrcl 11070 ax-mulcl 11071 ax-mulrcl 11072 ax-mulcom 11073 ax-addass 11074 ax-mulass 11075 ax-distr 11076 ax-i2m1 11077 ax-1ne0 11078 ax-1rid 11079 ax-rnegex 11080 ax-rrecex 11081 ax-cnre 11082 ax-pre-lttri 11083 ax-pre-lttrn 11084 ax-pre-ltadd 11085 ax-pre-mulgt0 11086 ax-pre-sup 11087

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3343 df-reu 3344 df-rab 3395 df-v 3438 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-int 4897 df-iun 4943 df-br 5093 df-opab 5155 df-mpt 5174 df-tr 5200 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-pred 6249 df-ord 6310 df-on 6311 df-lim 6312 df-suc 6313 df-iota 6438 df-fun 6484 df-fn 6485 df-f 6486 df-f1 6487 df-fo 6488 df-f1o 6489 df-fv 6490 df-riota 7306 df-ov 7352 df-oprab 7353 df-mpo 7354 df-om 7800 df-1st 7924 df-2nd 7925 df-frecs 8214 df-wrecs 8245 df-recs 8294 df-rdg 8332 df-1o 8388 df-oadd 8392 df-er 8625 df-en 8873 df-dom 8874 df-sdom 8875 df-fin 8876 df-sup 9332 df-inf 9333 df-dju 9797 df-card 9835 df-pnf 11151 df-mnf 11152 df-xr 11153 df-ltxr 11154 df-le 11155 df-sub 11349 df-neg 11350 df-div 11778 df-nn 12129 df-2 12191 df-3 12192 df-4 12193 df-5 12194 df-6 12195 df-7 12196 df-8 12197 df-9 12198 df-n0 12385 df-xnn0 12458 df-z 12472 df-dec 12592 df-uz 12736 df-rp 12894 df-ico 13254 df-fz 13411 df-fzo 13558 df-fl 13696 df-ceil 13697 df-mod 13774 df-hash 14238 df-dvds 16164 df-struct 17058 df-slot 17093 df-ndx 17105 df-base 17121 df-edgf 28934 df-vtx 28943 df-iedg 28944 df-edg 28993 df-umgr 29028 df-usgr 29096 df-gpg 48025

This theorem is referenced by: pgnbgreunbgrlem6 48108

W3C validator