pgnbgreunbgrlem2lem2 - Mathbox for Alexander van der Vekens

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Theorem pgnbgreunbgrlem2lem2 48938

Description: Lemma 2 for pgnbgreunbgrlem2 48940. (Contributed by AV, 16-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
pgnbgreunbgrlem2lem2	⊢ ((((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) ∧ {𝐾, ⟨0, 𝑏⟩} ∈ 𝐸) → ¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸)

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

**Proof of Theorem pgnbgreunbgrlem2lem2**
Step	Hyp	Ref	Expression
1		5eluz3 12923	. . . . . . . 8 ⊢ 5 ∈ (ℤ_≥‘3)
2		pglem 48914	. . . . . . . 8 ⊢ 2 ∈ (1..^(⌈‘(5 / 2)))
3	1, 2	pm3.2i 476	. . . . . . 7 ⊢ (5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2))))
4		c0ex 11215	. . . . . . . 8 ⊢ 0 ∈ V
5		vex 3461	. . . . . . . 8 ⊢ 𝑦 ∈ V
6	4, 5	op1st 8000	. . . . . . 7 ⊢ (1^st ‘⟨0, 𝑦⟩) = 0
7		simpr 490	. . . . . . 7 ⊢ (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸) → {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸)
8		eqid 2765	. . . . . . . 8 ⊢ (1..^(⌈‘(5 / 2))) = (1..^(⌈‘(5 / 2)))
9		pgnbgreunbgr.g	. . . . . . . 8 ⊢ 𝐺 = (5 gPetersenGr 2)
10		pgnbgreunbgr.v	. . . . . . . 8 ⊢ 𝑉 = (Vtx‘𝐺)
11		pgnbgreunbgr.e	. . . . . . . 8 ⊢ 𝐸 = (Edg‘𝐺)
12	8, 9, 10, 11	gpgvtxedg0 48886	. . . . . . 7 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (1^st ‘⟨0, 𝑦⟩) = 0 ∧ {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸) → (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩))
13	3, 6, 7, 12	mp3an12i 1494	. . . . . 6 ⊢ (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸) → (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩))
14	13	ex 418	. . . . 5 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸 → (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)))
15		vex 3461	. . . . . . . . . 10 ⊢ 𝑏 ∈ V
16	4, 15	op1st 8000	. . . . . . . . 9 ⊢ (1^st ‘⟨0, 𝑏⟩) = 0
17	8, 9, 10, 11	gpgvtxedg0 48886	. . . . . . . . 9 ⊢ (((5 ∈ (ℤ_≥‘3) ∧ 2 ∈ (1..^(⌈‘(5 / 2)))) ∧ (1^st ‘⟨0, 𝑏⟩) = 0 ∧ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸) → (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨1, (2^nd ‘⟨0, 𝑏⟩)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)⟩))
18	3, 16, 17	mp3an12 1480	. . . . . . . 8 ⊢ ({⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸 → (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨1, (2^nd ‘⟨0, 𝑏⟩)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)⟩))
19		1ex 11218	. . . . . . . . . . 11 ⊢ 1 ∈ V
20		ovex 7452	. . . . . . . . . . 11 ⊢ ((𝑦 − 2) mod 5) ∈ V
21	19, 20	opth 5460	. . . . . . . . . 10 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)⟩ ↔ (1 = 0 ∧ ((𝑦 − 2) mod 5) = (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)))
22		ax-1ne0 11184	. . . . . . . . . . . 12 ⊢ 1 ≠ 0
23		eqneqall 2971	. . . . . . . . . . . 12 ⊢ (1 = 0 → (1 ≠ 0 → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
24	22, 23	mpi 21	. . . . . . . . . . 11 ⊢ (1 = 0 → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
25	24	adantr 486	. . . . . . . . . 10 ⊢ ((1 = 0 ∧ ((𝑦 − 2) mod 5) = (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)) → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
26	21, 25	sylbi 220	. . . . . . . . 9 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)⟩ → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
27	19, 20	opth 5460	. . . . . . . . . 10 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨1, (2^nd ‘⟨0, 𝑏⟩)⟩ ↔ (1 = 1 ∧ ((𝑦 − 2) mod 5) = (2^nd ‘⟨0, 𝑏⟩)))
28	4, 15	op2nd 8001	. . . . . . . . . . . . 13 ⊢ (2^nd ‘⟨0, 𝑏⟩) = 𝑏
29	28	eqeq2i 2778	. . . . . . . . . . . 12 ⊢ (((𝑦 − 2) mod 5) = (2^nd ‘⟨0, 𝑏⟩) ↔ ((𝑦 − 2) mod 5) = 𝑏)
30		eqcom 2772	. . . . . . . . . . . 12 ⊢ (((𝑦 − 2) mod 5) = 𝑏 ↔ 𝑏 = ((𝑦 − 2) mod 5))
31	29, 30	bitri 278	. . . . . . . . . . 11 ⊢ (((𝑦 − 2) mod 5) = (2^nd ‘⟨0, 𝑏⟩) ↔ 𝑏 = ((𝑦 − 2) mod 5))
32	4, 5	op2nd 8001	. . . . . . . . . . . . . . . . . . . 20 ⊢ (2^nd ‘⟨0, 𝑦⟩) = 𝑦
33	32	oveq1i 7429	. . . . . . . . . . . . . . . . . . 19 ⊢ ((2^nd ‘⟨0, 𝑦⟩) + 1) = (𝑦 + 1)
34	33	oveq1i 7429	. . . . . . . . . . . . . . . . . 18 ⊢ (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5) = ((𝑦 + 1) mod 5)
35	34	opeq2i 4844	. . . . . . . . . . . . . . . . 17 ⊢ ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ = ⟨0, ((𝑦 + 1) mod 5)⟩
36	35	eqeq2i 2778	. . . . . . . . . . . . . . . 16 ⊢ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ↔ ⟨0, 𝑏⟩ = ⟨0, ((𝑦 + 1) mod 5)⟩)
37	4, 15	opth 5460	. . . . . . . . . . . . . . . 16 ⊢ (⟨0, 𝑏⟩ = ⟨0, ((𝑦 + 1) mod 5)⟩ ↔ (0 = 0 ∧ 𝑏 = ((𝑦 + 1) mod 5)))
38	36, 37	bitri 278	. . . . . . . . . . . . . . 15 ⊢ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ↔ (0 = 0 ∧ 𝑏 = ((𝑦 + 1) mod 5)))
39		eqeq1 2769	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑏 = ((𝑦 + 1) mod 5) → (𝑏 = ((𝑦 − 2) mod 5) ↔ ((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5)))
40	39	adantr 486	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑏 = ((𝑦 + 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (𝑏 = ((𝑦 − 2) mod 5) ↔ ((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5)))
41		eqcom 2772	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5) ↔ ((𝑦 − 2) mod 5) = ((𝑦 + 1) mod 5))
42	41	a1i 11	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5) ↔ ((𝑦 − 2) mod 5) = ((𝑦 + 1) mod 5)))
43		elfzoelz 13704	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ (0..^5) → 𝑦 ∈ ℤ)
44		2z 12641	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 2 ∈ ℤ
45	44	a1i 11	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ (0..^5) → 2 ∈ ℤ)
46	43, 45	zsubcld 12721	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → (𝑦 − 2) ∈ ℤ)
47	43	peano2zd 12719	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → (𝑦 + 1) ∈ ℤ)
48		5nn 12342	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ 5 ∈ ℕ
49	48	a1i 11	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → 5 ∈ ℕ)
50		difmod0 16367	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑦 − 2) ∈ ℤ ∧ (𝑦 + 1) ∈ ℤ ∧ 5 ∈ ℕ) → ((((𝑦 − 2) − (𝑦 + 1)) mod 5) = 0 ↔ ((𝑦 − 2) mod 5) = ((𝑦 + 1) mod 5)))
51	46, 47, 49, 50	syl3anc 1398	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ (0..^5) → ((((𝑦 − 2) − (𝑦 + 1)) mod 5) = 0 ↔ ((𝑦 − 2) mod 5) = ((𝑦 + 1) mod 5)))
52	43	zcnd 12717	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ (0..^5) → 𝑦 ∈ ℂ)
53		2cnd 12334	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ (0..^5) → 2 ∈ ℂ)
54		1cnd 11217	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ (0..^5) → 1 ∈ ℂ)
55	52, 53, 52, 54	subsubadd23 11636	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 2) − (𝑦 + 1)) = ((𝑦 − 𝑦) − (2 + 1)))
56	52	subidd 11572	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 ∈ (0..^5) → (𝑦 − 𝑦) = 0)
57		2p1e3 12397	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (2 + 1) = 3
58	57	a1i 11	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑦 ∈ (0..^5) → (2 + 1) = 3)
59	56, 58	oveq12d 7437	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 𝑦) − (2 + 1)) = (0 − 3))
60		df-neg 11459	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ -3 = (0 − 3)
61	59, 60	eqtr4di 2818	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 𝑦) − (2 + 1)) = -3)
62	55, 61	eqtrd 2800	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 2) − (𝑦 + 1)) = -3)
63	62	oveq1d 7434	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 − 2) − (𝑦 + 1)) mod 5) = (-3 mod 5))
64	63	eqeq1d 2767	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ (0..^5) → ((((𝑦 − 2) − (𝑦 + 1)) mod 5) = 0 ↔ (-3 mod 5) = 0))
65	42, 51, 64	3bitr2d 310	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5) ↔ (-3 mod 5) = 0))
66		3re 12336	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ 3 ∈ ℝ
67		5rp 13039	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ 5 ∈ ℝ⁺
68		negmod0 13929	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((3 ∈ ℝ ∧ 5 ∈ ℝ⁺) → ((3 mod 5) = 0 ↔ (-3 mod 5) = 0))
69	66, 67, 68	mp2an 705	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((3 mod 5) = 0 ↔ (-3 mod 5) = 0)
70		0re 11225	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ 0 ∈ ℝ
71		3pos 12364	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ 0 < 3
72	70, 66, 71	ltleii 11348	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 0 ≤ 3
73		3lt5 12436	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ 3 < 5
74		modid 13947	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((3 ∈ ℝ ∧ 5 ∈ ℝ⁺) ∧ (0 ≤ 3 ∧ 3 < 5)) → (3 mod 5) = 3)
75	66, 67, 72, 73, 74	mp4an 706	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (3 mod 5) = 3
76	75	eqeq1i 2770	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((3 mod 5) = 0 ↔ 3 = 0)
77	69, 76	bitr3i 280	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((-3 mod 5) = 0 ↔ 3 = 0)
78		3ne0 12365	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 3 ≠ 0
79		eqneqall 2971	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (3 = 0 → (3 ≠ 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
80	78, 79	mpi 21	. . . . . . . . . . . . . . . . . . . 20 ⊢ (3 = 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)
81	77, 80	sylbi 220	. . . . . . . . . . . . . . . . . . 19 ⊢ ((-3 mod 5) = 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)
82	65, 81	biimtrdi 256	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
83	82	ad2antll 742	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑏 = ((𝑦 + 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (((𝑦 + 1) mod 5) = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
84	40, 83	sylbid 243	. . . . . . . . . . . . . . . 16 ⊢ ((𝑏 = ((𝑦 + 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
85	84	ex 418	. . . . . . . . . . . . . . 15 ⊢ (𝑏 = ((𝑦 + 1) mod 5) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
86	38, 85	simplbiim 514	. . . . . . . . . . . . . 14 ⊢ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
87	4, 15	opth 5460	. . . . . . . . . . . . . . 15 ⊢ (⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ↔ (0 = 1 ∧ 𝑏 = (2^nd ‘⟨0, 𝑦⟩)))
88		0ne1 12327	. . . . . . . . . . . . . . . . 17 ⊢ 0 ≠ 1
89		eqneqall 2971	. . . . . . . . . . . . . . . . 17 ⊢ (0 = 1 → (0 ≠ 1 → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))))
90	88, 89	mpi 21	. . . . . . . . . . . . . . . 16 ⊢ (0 = 1 → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
91	90	adantr 486	. . . . . . . . . . . . . . 15 ⊢ ((0 = 1 ∧ 𝑏 = (2^nd ‘⟨0, 𝑦⟩)) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
92	87, 91	sylbi 220	. . . . . . . . . . . . . 14 ⊢ (⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
93	32	oveq1i 7429	. . . . . . . . . . . . . . . . . 18 ⊢ ((2^nd ‘⟨0, 𝑦⟩) − 1) = (𝑦 − 1)
94	93	oveq1i 7429	. . . . . . . . . . . . . . . . 17 ⊢ (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5) = ((𝑦 − 1) mod 5)
95	94	opeq2i 4844	. . . . . . . . . . . . . . . 16 ⊢ ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩ = ⟨0, ((𝑦 − 1) mod 5)⟩
96	95	eqeq2i 2778	. . . . . . . . . . . . . . 15 ⊢ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩ ↔ ⟨0, 𝑏⟩ = ⟨0, ((𝑦 − 1) mod 5)⟩)
97	4, 15	opth 5460	. . . . . . . . . . . . . . . 16 ⊢ (⟨0, 𝑏⟩ = ⟨0, ((𝑦 − 1) mod 5)⟩ ↔ (0 = 0 ∧ 𝑏 = ((𝑦 − 1) mod 5)))
98		eqeq1 2769	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑏 = ((𝑦 − 1) mod 5) → (𝑏 = ((𝑦 − 2) mod 5) ↔ ((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5)))
99	98	adantr 486	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑏 = ((𝑦 − 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (𝑏 = ((𝑦 − 2) mod 5) ↔ ((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5)))
100		1zzd 12640	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ (0..^5) → 1 ∈ ℤ)
101	43, 100	zsubcld 12721	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → (𝑦 − 1) ∈ ℤ)
102		difmod0 16367	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑦 − 1) ∈ ℤ ∧ (𝑦 − 2) ∈ ℤ ∧ 5 ∈ ℕ) → ((((𝑦 − 1) − (𝑦 − 2)) mod 5) = 0 ↔ ((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5)))
103	102	bicomd 226	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((𝑦 − 1) ∈ ℤ ∧ (𝑦 − 2) ∈ ℤ ∧ 5 ∈ ℕ) → (((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5) ↔ (((𝑦 − 1) − (𝑦 − 2)) mod 5) = 0))
104	101, 46, 49, 103	syl3anc 1398	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5) ↔ (((𝑦 − 1) − (𝑦 − 2)) mod 5) = 0))
105	52, 54, 53	nnncan1d 11618	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 1) − (𝑦 − 2)) = (2 − 1))
106		2m1e1 12380	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (2 − 1) = 1
107	105, 106	eqtrdi 2816	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑦 ∈ (0..^5) → ((𝑦 − 1) − (𝑦 − 2)) = 1)
108	107	oveq1d 7434	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 − 1) − (𝑦 − 2)) mod 5) = (1 mod 5))
109	108	eqeq1d 2767	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 ∈ (0..^5) → ((((𝑦 − 1) − (𝑦 − 2)) mod 5) = 0 ↔ (1 mod 5) = 0))
110		1re 11223	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ 1 ∈ ℝ
111		0le1 11752	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ 0 ≤ 1
112		1lt5 12438	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ 1 < 5
113		modid 13947	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((1 ∈ ℝ ∧ 5 ∈ ℝ⁺) ∧ (0 ≤ 1 ∧ 1 < 5)) → (1 mod 5) = 1)
114	110, 67, 111, 112, 113	mp4an 706	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (1 mod 5) = 1
115	114	eqeq1i 2770	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((1 mod 5) = 0 ↔ 1 = 0)
116		eqneqall 2971	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (1 = 0 → (1 ≠ 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
117	22, 116	mpi 21	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1 = 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)
118	115, 117	sylbi 220	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((1 mod 5) = 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)
119	109, 118	biimtrdi 256	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 ∈ (0..^5) → ((((𝑦 − 1) − (𝑦 − 2)) mod 5) = 0 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
120	104, 119	sylbid 243	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 ∈ (0..^5) → (((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
121	120	ad2antll 742	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑏 = ((𝑦 − 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (((𝑦 − 1) mod 5) = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
122	99, 121	sylbid 243	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑏 = ((𝑦 − 1) mod 5) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
123	122	ex 418	. . . . . . . . . . . . . . . 16 ⊢ (𝑏 = ((𝑦 − 1) mod 5) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
124	97, 123	simplbiim 514	. . . . . . . . . . . . . . 15 ⊢ (⟨0, 𝑏⟩ = ⟨0, ((𝑦 − 1) mod 5)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
125	96, 124	sylbi 220	. . . . . . . . . . . . . 14 ⊢ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩ → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
126	86, 92, 125	3jaoi 1454	. . . . . . . . . . . . 13 ⊢ ((⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → (𝑏 = ((𝑦 − 2) mod 5) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
127	126	com13 89	. . . . . . . . . . . 12 ⊢ (𝑏 = ((𝑦 − 2) mod 5) → ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ((⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
128	127	impd 416	. . . . . . . . . . 11 ⊢ (𝑏 = ((𝑦 − 2) mod 5) → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
129	31, 128	sylbi 220	. . . . . . . . . 10 ⊢ (((𝑦 − 2) mod 5) = (2^nd ‘⟨0, 𝑏⟩) → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
130	27, 129	simplbiim 514	. . . . . . . . 9 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨1, (2^nd ‘⟨0, 𝑏⟩)⟩ → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
131	19, 20	opth 5460	. . . . . . . . . 10 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)⟩ ↔ (1 = 0 ∧ ((𝑦 − 2) mod 5) = (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)))
132	24	adantr 486	. . . . . . . . . 10 ⊢ ((1 = 0 ∧ ((𝑦 − 2) mod 5) = (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)) → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
133	131, 132	sylbi 220	. . . . . . . . 9 ⊢ (⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)⟩ → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
134	26, 130, 133	3jaoi 1454	. . . . . . . 8 ⊢ ((⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) + 1) mod 5)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨1, (2^nd ‘⟨0, 𝑏⟩)⟩ ∨ ⟨1, ((𝑦 − 2) mod 5)⟩ = ⟨0, (((2^nd ‘⟨0, 𝑏⟩) − 1) mod 5)⟩) → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
135	18, 134	syl 18	. . . . . . 7 ⊢ ({⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸 → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
136		ax-1 6	. . . . . . 7 ⊢ (¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸 → (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
137	135, 136	pm2.61i 184	. . . . . 6 ⊢ (((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) ∧ (⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩)) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)
138	137	ex 418	. . . . 5 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ((⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) + 1) mod 5)⟩ ∨ ⟨0, 𝑏⟩ = ⟨1, (2^nd ‘⟨0, 𝑦⟩)⟩ ∨ ⟨0, 𝑏⟩ = ⟨0, (((2^nd ‘⟨0, 𝑦⟩) − 1) mod 5)⟩) → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
139	14, 138	syld 48	. . . 4 ⊢ ((𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5)) → ({⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
140	139	adantl 487	. . 3 ⊢ (((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → ({⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
141		preq1 4701	. . . . . . 7 ⊢ (𝐾 = ⟨0, 𝑦⟩ → {𝐾, ⟨0, 𝑏⟩} = {⟨0, 𝑦⟩, ⟨0, 𝑏⟩})
142	141	eleq1d 2850	. . . . . 6 ⊢ (𝐾 = ⟨0, 𝑦⟩ → ({𝐾, ⟨0, 𝑏⟩} ∈ 𝐸 ↔ {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸))
143	142	adantl 487	. . . . 5 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → ({𝐾, ⟨0, 𝑏⟩} ∈ 𝐸 ↔ {⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸))
144		preq2 4702	. . . . . . . 8 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → {⟨0, 𝑏⟩, 𝐿} = {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩})
145	144	eleq1d 2850	. . . . . . 7 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → ({⟨0, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
146	145	notbid 321	. . . . . 6 ⊢ (𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ → (¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
147	146	adantr 486	. . . . 5 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸 ↔ ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸))
148	143, 147	imbi12d 347	. . . 4 ⊢ ((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) → (({𝐾, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
149	148	adantr 486	. . 3 ⊢ (((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → (({𝐾, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸) ↔ ({⟨0, 𝑦⟩, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, ⟨1, ((𝑦 − 2) mod 5)⟩} ∈ 𝐸)))
150	140, 149	mpbird 260	. 2 ⊢ (((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) → ({𝐾, ⟨0, 𝑏⟩} ∈ 𝐸 → ¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸))
151	150	imp 412	1 ⊢ ((((𝐿 = ⟨1, ((𝑦 − 2) mod 5)⟩ ∧ 𝐾 = ⟨0, 𝑦⟩) ∧ (𝑏 ∈ (0..^5) ∧ 𝑦 ∈ (0..^5))) ∧ {𝐾, ⟨0, 𝑏⟩} ∈ 𝐸) → ¬ {⟨0, 𝑏⟩, 𝐿} ∈ 𝐸)

Colors of variables: wff setvar class

This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∨ w3o 1102 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ≠ wne 2960 {cpr 4593 ⟨cop 4597 class class class wbr 5111 ‘cfv 6540 (class class class)co 7419 1^st c1st 7990 2^nd c2nd 7991 ℝcr 11114 0cc0 11115 1c1 11116 + caddc 11118 < clt 11258 ≤ cle 11259 − cmin 11456 -cneg 11457 / cdiv 11886 ℕcn 12248 2c2 12310 3c3 12311 5c5 12313 ℤcz 12606 ℤ_≥cuz 12878 ℝ⁺crp 13032 ..^cfzo 13699 ⌈cceil 13842 mod cmo 13920 Vtxcvtx 29401 Edgcedg 29452 NeighbVtx cnbgr 29740 gPetersenGr cgpg 48863

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7742 ax-cnex 11171 ax-resscn 11172 ax-1cn 11173 ax-icn 11174 ax-addcl 11175 ax-addrcl 11176 ax-mulcl 11177 ax-mulrcl 11178 ax-mulcom 11179 ax-addass 11180 ax-mulass 11181 ax-distr 11182 ax-i2m1 11183 ax-1ne0 11184 ax-1rid 11185 ax-rnegex 11186 ax-rrecex 11187 ax-cnre 11188 ax-pre-lttri 11189 ax-pre-lttrn 11190 ax-pre-ltadd 11191 ax-pre-mulgt0 11192 ax-pre-sup 11193

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3067 df-ral 3082 df-rex 3092 df-rmo 3371 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-int 4915 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-pred 6306 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7376 df-ov 7422 df-oprab 7423 df-mpo 7424 df-om 7869 df-1st 7992 df-2nd 7993 df-frecs 8284 df-wrecs 8315 df-recs 8364 df-rdg 8403 df-1o 8459 df-oadd 8463 df-er 8700 df-en 8950 df-dom 8951 df-sdom 8952 df-fin 8953 df-sup 9409 df-inf 9410 df-dju 9903 df-card 9941 df-pnf 11260 df-mnf 11261 df-xr 11262 df-ltxr 11263 df-le 11264 df-sub 11458 df-neg 11459 df-div 11887 df-nn 12249 df-2 12318 df-3 12319 df-4 12320 df-5 12321 df-6 12322 df-7 12323 df-8 12324 df-9 12325 df-n0 12520 df-xnn0 12593 df-z 12607 df-dec 12728 df-uz 12879 df-rp 13033 df-fz 13552 df-fzo 13700 df-fl 13843 df-ceil 13844 df-mod 13921 df-hash 14385 df-dvds 16333 df-struct 17229 df-slot 17264 df-ndx 17276 df-base 17292 df-edgf 29394 df-vtx 29403 df-iedg 29404 df-edg 29453 df-umgr 29488 df-usgr 29559 df-gpg 48864

This theorem is used by: pgnbgreunbgrlem2 48940

W3C validator