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Theorem iscgra 28040

Description: Property for two angles ABC and DEF to be congruent. This is a modified version of the definition 11.3 of [Schwabhauser] p. 95. where the number of constructed points has been reduced to two. We chose this version rather than the textbook version because it is shorter and therefore simpler to work with. Theorem dfcgra2 28061 shows that those definitions are indeed equivalent. (Contributed by Thierry Arnoux, 31-Jul-2020.)

**Hypotheses**
Ref	Expression
iscgra.p	⊢ 𝑃 = (Base‘𝐺)
iscgra.i	⊢ 𝐼 = (Itv‘𝐺)
iscgra.k	⊢ 𝐾 = (hlG‘𝐺)
iscgra.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
iscgra.a	⊢ (𝜑 → 𝐴 ∈ 𝑃)
iscgra.b	⊢ (𝜑 → 𝐵 ∈ 𝑃)
iscgra.c	⊢ (𝜑 → 𝐶 ∈ 𝑃)
iscgra.d	⊢ (𝜑 → 𝐷 ∈ 𝑃)
iscgra.e	⊢ (𝜑 → 𝐸 ∈ 𝑃)
iscgra.f	⊢ (𝜑 → 𝐹 ∈ 𝑃)

**Assertion**
Ref	Expression
iscgra	⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩(cgrA‘𝐺)⟨“𝐷𝐸𝐹”⟩ ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹)))

Distinct variable groups: 𝑥,𝐴,𝑦 𝑥,𝐵,𝑦 𝑥,𝐶,𝑦 𝑥,𝐷,𝑦 𝑥,𝐸,𝑦 𝑥,𝐹,𝑦 𝑥,𝐾,𝑦 𝜑,𝑥,𝑦 𝑥,𝐺,𝑦 𝑥,𝐼,𝑦 𝑥,𝑃,𝑦

Proof of Theorem iscgra Dummy variables 𝑎 𝑏 𝑔 𝑘 𝑝 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl 484	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑎 = ⟨“𝐴𝐵𝐶”⟩)
2		eqidd 2734	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑥 = 𝑥)
3		simpr 486	. . . . . . . . 9 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑏 = ⟨“𝐷𝐸𝐹”⟩)
4	3	fveq1d 6890	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘1) = (⟨“𝐷𝐸𝐹”⟩‘1))
5		eqidd 2734	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑦 = 𝑦)
6	2, 4, 5	s3eqd 14811	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → ⟨“𝑥(𝑏‘1)𝑦”⟩ = ⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩)
7	1, 6	breq12d 5160	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ↔ ⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩))
8	4	fveq2d 6892	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝐾‘(𝑏‘1)) = (𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1)))
9	3	fveq1d 6890	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘0) = (⟨“𝐷𝐸𝐹”⟩‘0))
10	2, 8, 9	breq123d 5161	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ↔ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0)))
11	3	fveq1d 6890	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘2) = (⟨“𝐷𝐸𝐹”⟩‘2))
12	5, 8, 11	breq123d 5161	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑦(𝐾‘(𝑏‘1))(𝑏‘2) ↔ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2)))
13	7, 10, 12	3anbi123d 1437	. . . . 5 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → ((𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)) ↔ (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2))))
14	13	2rexbidv 3220	. . . 4 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)) ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2))))
15		eqid 2733	. . . 4 ⊢ {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))} = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))}
16	14, 15	brab2a 5767	. . 3 ⊢ (⟨“𝐴𝐵𝐶”⟩{⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))}⟨“𝐷𝐸𝐹”⟩ ↔ ((⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2))))
17		eqidd 2734	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → 𝑥 = 𝑥)
18		iscgra.e	. . . . . . . . . 10 ⊢ (𝜑 → 𝐸 ∈ 𝑃)
19		s3fv1 14839	. . . . . . . . . 10 ⊢ (𝐸 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
20	18, 19	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
21	20	adantr 482	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
22		eqidd 2734	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → 𝑦 = 𝑦)
23	17, 21, 22	s3eqd 14811	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → ⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ = ⟨“𝑥𝐸𝑦”⟩)
24	23	breq2d 5159	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ↔ ⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩))
25	21	fveq2d 6892	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1)) = (𝐾‘𝐸))
26		iscgra.d	. . . . . . . . 9 ⊢ (𝜑 → 𝐷 ∈ 𝑃)
27		s3fv0 14838	. . . . . . . . 9 ⊢ (𝐷 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
28	26, 27	syl 17	. . . . . . . 8 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
29	28	adantr 482	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
30	17, 25, 29	breq123d 5161	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ↔ 𝑥(𝐾‘𝐸)𝐷))
31		iscgra.f	. . . . . . . . 9 ⊢ (𝜑 → 𝐹 ∈ 𝑃)
32		s3fv2 14840	. . . . . . . . 9 ⊢ (𝐹 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
33	31, 32	syl 17	. . . . . . . 8 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
34	33	adantr 482	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
35	22, 25, 34	breq123d 5161	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2) ↔ 𝑦(𝐾‘𝐸)𝐹))
36	24, 30, 35	3anbi123d 1437	. . . . 5 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → ((⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2)) ↔ (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹)))
37	36	2rexbidva 3218	. . . 4 ⊢ (𝜑 → (∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2)) ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹)))
38	37	anbi2d 630	. . 3 ⊢ (𝜑 → (((⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0) ∧ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2))) ↔ ((⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹))))
39	16, 38	bitrid 283	. 2 ⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩{⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))}⟨“𝐷𝐸𝐹”⟩ ↔ ((⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹))))
40		iscgra.g	. . . 4 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
41		elex 3493	. . . 4 ⊢ (𝐺 ∈ TarskiG → 𝐺 ∈ V)
42		iscgra.p	. . . . . . . 8 ⊢ 𝑃 = (Base‘𝐺)
43		iscgra.k	. . . . . . . 8 ⊢ 𝐾 = (hlG‘𝐺)
44		simpl 484	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → 𝑝 = 𝑃)
45	44	oveq1d 7419	. . . . . . . . . . 11 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑝 ↑_m (0..^3)) = (𝑃 ↑_m (0..^3)))
46	45	eleq2d 2820	. . . . . . . . . 10 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑎 ∈ (𝑝 ↑_m (0..^3)) ↔ 𝑎 ∈ (𝑃 ↑_m (0..^3))))
47	45	eleq2d 2820	. . . . . . . . . 10 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑏 ∈ (𝑝 ↑_m (0..^3)) ↔ 𝑏 ∈ (𝑃 ↑_m (0..^3))))
48	46, 47	anbi12d 632	. . . . . . . . 9 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → ((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ↔ (𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3)))))
49		simpr 486	. . . . . . . . . . . . . 14 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → 𝑘 = 𝐾)
50	49	fveq1d 6890	. . . . . . . . . . . . 13 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑘‘(𝑏‘1)) = (𝐾‘(𝑏‘1)))
51	50	breqd 5158	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ↔ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0)))
52	50	breqd 5158	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑦(𝑘‘(𝑏‘1))(𝑏‘2) ↔ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))
53	51, 52	3anbi23d 1440	. . . . . . . . . . 11 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → ((𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)) ↔ (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))))
54	44, 53	rexeqbidv 3344	. . . . . . . . . 10 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)) ↔ ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))))
55	44, 54	rexeqbidv 3344	. . . . . . . . 9 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)) ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))))
56	48, 55	anbi12d 632	. . . . . . . 8 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2))) ↔ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))))
57	42, 43, 56	sbcie2s 17090	. . . . . . 7 ⊢ (𝑔 = 𝐺 → ([(Base‘𝑔) / 𝑝][(hlG‘𝑔) / 𝑘]((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2))) ↔ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))))
58	57	opabbidv 5213	. . . . . 6 ⊢ (𝑔 = 𝐺 → {⟨𝑎, 𝑏⟩ ∣ [(Base‘𝑔) / 𝑝][(hlG‘𝑔) / 𝑘]((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)))} = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))})
59		fveq2 6888	. . . . . . . . . . 11 ⊢ (𝑔 = 𝐺 → (cgrG‘𝑔) = (cgrG‘𝐺))
60	59	breqd 5158	. . . . . . . . . 10 ⊢ (𝑔 = 𝐺 → (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ↔ 𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩))
61	60	3anbi1d 1441	. . . . . . . . 9 ⊢ (𝑔 = 𝐺 → ((𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)) ↔ (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))))
62	61	2rexbidv 3220	. . . . . . . 8 ⊢ (𝑔 = 𝐺 → (∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)) ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))))
63	62	anbi2d 630	. . . . . . 7 ⊢ (𝑔 = 𝐺 → (((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2))) ↔ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))))
64	63	opabbidv 5213	. . . . . 6 ⊢ (𝑔 = 𝐺 → {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))} = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))})
65	58, 64	eqtrd 2773	. . . . 5 ⊢ (𝑔 = 𝐺 → {⟨𝑎, 𝑏⟩ ∣ [(Base‘𝑔) / 𝑝][(hlG‘𝑔) / 𝑘]((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)))} = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))})
66		df-cgra 28039	. . . . 5 ⊢ cgrA = (𝑔 ∈ V ↦ {⟨𝑎, 𝑏⟩ ∣ [(Base‘𝑔) / 𝑝][(hlG‘𝑔) / 𝑘]((𝑎 ∈ (𝑝 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑝 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑝 ∃𝑦 ∈ 𝑝 (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝑘‘(𝑏‘1))(𝑏‘2)))})
67		ovex 7437	. . . . . . 7 ⊢ (𝑃 ↑_m (0..^3)) ∈ V
68	67, 67	xpex 7735	. . . . . 6 ⊢ ((𝑃 ↑_m (0..^3)) × (𝑃 ↑_m (0..^3))) ∈ V
69		opabssxp 5766	. . . . . 6 ⊢ {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))} ⊆ ((𝑃 ↑_m (0..^3)) × (𝑃 ↑_m (0..^3)))
70	68, 69	ssexi 5321	. . . . 5 ⊢ {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))} ∈ V
71	65, 66, 70	fvmpt 6994	. . . 4 ⊢ (𝐺 ∈ V → (cgrA‘𝐺) = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))})
72	40, 41, 71	3syl 18	. . 3 ⊢ (𝜑 → (cgrA‘𝐺) = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))})
73	72	breqd 5158	. 2 ⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩(cgrA‘𝐺)⟨“𝐷𝐸𝐹”⟩ ↔ ⟨“𝐴𝐵𝐶”⟩{⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ↑_m (0..^3)) ∧ 𝑏 ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ∧ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ∧ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))}⟨“𝐷𝐸𝐹”⟩))
74		iscgra.a	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
75		iscgra.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
76		iscgra.c	. . . . . 6 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
77	74, 75, 76	s3cld 14819	. . . . 5 ⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃)
78		s3len 14841	. . . . 5 ⊢ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3
79	42	fvexi 6902	. . . . . 6 ⊢ 𝑃 ∈ V
80		3nn0 12486	. . . . . 6 ⊢ 3 ∈ ℕ₀
81		wrdmap 14492	. . . . . 6 ⊢ ((𝑃 ∈ V ∧ 3 ∈ ℕ₀) → ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3) ↔ ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3))))
82	79, 80, 81	mp2an 691	. . . . 5 ⊢ ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3) ↔ ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)))
83	77, 78, 82	sylanblc 590	. . . 4 ⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)))
84	26, 18, 31	s3cld 14819	. . . . 5 ⊢ (𝜑 → ⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃)
85		s3len 14841	. . . . 5 ⊢ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3
86		wrdmap 14492	. . . . . 6 ⊢ ((𝑃 ∈ V ∧ 3 ∈ ℕ₀) → ((⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3) ↔ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))))
87	79, 80, 86	mp2an 691	. . . . 5 ⊢ ((⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3) ↔ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3)))
88	84, 85, 87	sylanblc 590	. . . 4 ⊢ (𝜑 → ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3)))
89	83, 88	jca 513	. . 3 ⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))))
90	89	biantrurd 534	. 2 ⊢ (𝜑 → (∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹) ↔ ((⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))) ∧ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹))))
91	39, 73, 90	3bitr4d 311	1 ⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩(cgrA‘𝐺)⟨“𝐷𝐸𝐹”⟩ ↔ ∃𝑥 ∈ 𝑃 ∃𝑦 ∈ 𝑃 (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩ ∧ 𝑥(𝐾‘𝐸)𝐷 ∧ 𝑦(𝐾‘𝐸)𝐹)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ∃wrex 3071 Vcvv 3475 [wsbc 3776 class class class wbr 5147 {copab 5209 × cxp 5673 ‘cfv 6540 (class class class)co 7404 ↑_m cmap 8816 0cc0 11106 1c1 11107 2c2 12263 3c3 12264 ℕ₀cn0 12468 ..^cfzo 13623 ♯chash 14286 Word cword 14460 ⟨“cs3 14789 Basecbs 17140 TarskiGcstrkg 27658 Itvcitv 27664 cgrGccgrg 27741 hlGchlg 27831 cgrAccgra 28038

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7720 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-riota 7360 df-ov 7407 df-oprab 7408 df-mpo 7409 df-om 7851 df-1st 7970 df-2nd 7971 df-frecs 8261 df-wrecs 8292 df-recs 8366 df-rdg 8405 df-1o 8461 df-er 8699 df-map 8818 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-2 12271 df-3 12272 df-n0 12469 df-z 12555 df-uz 12819 df-fz 13481 df-fzo 13624 df-hash 14287 df-word 14461 df-concat 14517 df-s1 14542 df-s2 14795 df-s3 14796 df-cgra 28039

This theorem is referenced by: iscgra1 28041 iscgrad 28042 cgrane1 28043 cgrane2 28044 cgrane3 28045 cgrane4 28046 cgrahl1 28047 cgrahl2 28048 cgracgr 28049 cgraswap 28051 cgracom 28053 cgratr 28054 flatcgra 28055 cgrabtwn 28057 cgrahl 28058 sacgr 28062

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