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Theorem iscgra 28494

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 28515 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 482	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑎 = ⟨“𝐴𝐵𝐶”⟩)
2		eqidd 2732	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑥 = 𝑥)
3		simpr 484	. . . . . . . . 9 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑏 = ⟨“𝐷𝐸𝐹”⟩)
4	3	fveq1d 6893	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘1) = (⟨“𝐷𝐸𝐹”⟩‘1))
5		eqidd 2732	. . . . . . . 8 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → 𝑦 = 𝑦)
6	2, 4, 5	s3eqd 14822	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → ⟨“𝑥(𝑏‘1)𝑦”⟩ = ⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩)
7	1, 6	breq12d 5161	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩ ↔ ⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩))
8	4	fveq2d 6895	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝐾‘(𝑏‘1)) = (𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1)))
9	3	fveq1d 6893	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘0) = (⟨“𝐷𝐸𝐹”⟩‘0))
10	2, 8, 9	breq123d 5162	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑥(𝐾‘(𝑏‘1))(𝑏‘0) ↔ 𝑥(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘0)))
11	3	fveq1d 6893	. . . . . . 7 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑏‘2) = (⟨“𝐷𝐸𝐹”⟩‘2))
12	5, 8, 11	breq123d 5162	. . . . . 6 ⊢ ((𝑎 = ⟨“𝐴𝐵𝐶”⟩ ∧ 𝑏 = ⟨“𝐷𝐸𝐹”⟩) → (𝑦(𝐾‘(𝑏‘1))(𝑏‘2) ↔ 𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2)))
13	7, 10, 12	3anbi123d 1435	. . . . 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 3218	. . . 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 2731	. . . 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 5769	. . 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 2732	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → 𝑥 = 𝑥)
18		iscgra.e	. . . . . . . . . 10 ⊢ (𝜑 → 𝐸 ∈ 𝑃)
19		s3fv1 14850	. . . . . . . . . 10 ⊢ (𝐸 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
20	18, 19	syl 17	. . . . . . . . 9 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
21	20	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘1) = 𝐸)
22		eqidd 2732	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → 𝑦 = 𝑦)
23	17, 21, 22	s3eqd 14822	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → ⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ = ⟨“𝑥𝐸𝑦”⟩)
24	23	breq2d 5160	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥(⟨“𝐷𝐸𝐹”⟩‘1)𝑦”⟩ ↔ ⟨“𝐴𝐵𝐶”⟩(cgrG‘𝐺)⟨“𝑥𝐸𝑦”⟩))
25	21	fveq2d 6895	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1)) = (𝐾‘𝐸))
26		iscgra.d	. . . . . . . . 9 ⊢ (𝜑 → 𝐷 ∈ 𝑃)
27		s3fv0 14849	. . . . . . . . 9 ⊢ (𝐷 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
28	26, 27	syl 17	. . . . . . . 8 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
29	28	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘0) = 𝐷)
30	17, 25, 29	breq123d 5162	. . . . . 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 14851	. . . . . . . . 9 ⊢ (𝐹 ∈ 𝑃 → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
33	31, 32	syl 17	. . . . . . . 8 ⊢ (𝜑 → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
34	33	adantr 480	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (⟨“𝐷𝐸𝐹”⟩‘2) = 𝐹)
35	22, 25, 34	breq123d 5162	. . . . . 6 ⊢ ((𝜑 ∧ (𝑥 ∈ 𝑃 ∧ 𝑦 ∈ 𝑃)) → (𝑦(𝐾‘(⟨“𝐷𝐸𝐹”⟩‘1))(⟨“𝐷𝐸𝐹”⟩‘2) ↔ 𝑦(𝐾‘𝐸)𝐹))
36	24, 30, 35	3anbi123d 1435	. . . . 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 3216	. . . 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 628	. . 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 3492	. . . 4 ⊢ (𝐺 ∈ TarskiG → 𝐺 ∈ V)
42		iscgra.p	. . . . . . . 8 ⊢ 𝑃 = (Base‘𝐺)
43		iscgra.k	. . . . . . . 8 ⊢ 𝐾 = (hlG‘𝐺)
44		simpl 482	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → 𝑝 = 𝑃)
45	44	oveq1d 7427	. . . . . . . . . . 11 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑝 ↑_m (0..^3)) = (𝑃 ↑_m (0..^3)))
46	45	eleq2d 2818	. . . . . . . . . 10 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑎 ∈ (𝑝 ↑_m (0..^3)) ↔ 𝑎 ∈ (𝑃 ↑_m (0..^3))))
47	45	eleq2d 2818	. . . . . . . . . 10 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑏 ∈ (𝑝 ↑_m (0..^3)) ↔ 𝑏 ∈ (𝑃 ↑_m (0..^3))))
48	46, 47	anbi12d 630	. . . . . . . . 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 484	. . . . . . . . . . . . . 14 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → 𝑘 = 𝐾)
50	49	fveq1d 6893	. . . . . . . . . . . . 13 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑘‘(𝑏‘1)) = (𝐾‘(𝑏‘1)))
51	50	breqd 5159	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑥(𝑘‘(𝑏‘1))(𝑏‘0) ↔ 𝑥(𝐾‘(𝑏‘1))(𝑏‘0)))
52	50	breqd 5159	. . . . . . . . . . . 12 ⊢ ((𝑝 = 𝑃 ∧ 𝑘 = 𝐾) → (𝑦(𝑘‘(𝑏‘1))(𝑏‘2) ↔ 𝑦(𝐾‘(𝑏‘1))(𝑏‘2)))
53	51, 52	3anbi23d 1438	. . . . . . . . . . 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 3342	. . . . . . . . . 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 3342	. . . . . . . . 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 630	. . . . . . . 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 17101	. . . . . . 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 5214	. . . . . 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 6891	. . . . . . . . . . 11 ⊢ (𝑔 = 𝐺 → (cgrG‘𝑔) = (cgrG‘𝐺))
60	59	breqd 5159	. . . . . . . . . 10 ⊢ (𝑔 = 𝐺 → (𝑎(cgrG‘𝑔)⟨“𝑥(𝑏‘1)𝑦”⟩ ↔ 𝑎(cgrG‘𝐺)⟨“𝑥(𝑏‘1)𝑦”⟩))
61	60	3anbi1d 1439	. . . . . . . . 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 3218	. . . . . . . 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 628	. . . . . . 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 5214	. . . . . 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 2771	. . . . 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 28493	. . . . 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 7445	. . . . . . 7 ⊢ (𝑃 ↑_m (0..^3)) ∈ V
68	67, 67	xpex 7744	. . . . . 6 ⊢ ((𝑃 ↑_m (0..^3)) × (𝑃 ↑_m (0..^3))) ∈ V
69		opabssxp 5768	. . . . . 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 5322	. . . . 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 6998	. . . 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 5159	. 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 14830	. . . . 5 ⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃)
78		s3len 14852	. . . . 5 ⊢ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3
79	42	fvexi 6905	. . . . . 6 ⊢ 𝑃 ∈ V
80		3nn0 12497	. . . . . 6 ⊢ 3 ∈ ℕ₀
81		wrdmap 14503	. . . . . 6 ⊢ ((𝑃 ∈ V ∧ 3 ∈ ℕ₀) → ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3) ↔ ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3))))
82	79, 80, 81	mp2an 689	. . . . 5 ⊢ ((⟨“𝐴𝐵𝐶”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐴𝐵𝐶”⟩) = 3) ↔ ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)))
83	77, 78, 82	sylanblc 588	. . . 4 ⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)))
84	26, 18, 31	s3cld 14830	. . . . 5 ⊢ (𝜑 → ⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃)
85		s3len 14852	. . . . 5 ⊢ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3
86		wrdmap 14503	. . . . . 6 ⊢ ((𝑃 ∈ V ∧ 3 ∈ ℕ₀) → ((⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3) ↔ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))))
87	79, 80, 86	mp2an 689	. . . . 5 ⊢ ((⟨“𝐷𝐸𝐹”⟩ ∈ Word 𝑃 ∧ (♯‘⟨“𝐷𝐸𝐹”⟩) = 3) ↔ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3)))
88	84, 85, 87	sylanblc 588	. . . 4 ⊢ (𝜑 → ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3)))
89	83, 88	jca 511	. . 3 ⊢ (𝜑 → (⟨“𝐴𝐵𝐶”⟩ ∈ (𝑃 ↑_m (0..^3)) ∧ ⟨“𝐷𝐸𝐹”⟩ ∈ (𝑃 ↑_m (0..^3))))
90	89	biantrurd 532	. 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 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ∃wrex 3069 Vcvv 3473 [wsbc 3777 class class class wbr 5148 {copab 5210 × cxp 5674 ‘cfv 6543 (class class class)co 7412 ↑_m cmap 8826 0cc0 11116 1c1 11117 2c2 12274 3c3 12275 ℕ₀cn0 12479 ..^cfzo 13634 ♯chash 14297 Word cword 14471 ⟨“cs3 14800 Basecbs 17151 TarskiGcstrkg 28112 Itvcitv 28118 cgrGccgrg 28195 hlGchlg 28285 cgrAccgra 28492

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11172 ax-resscn 11173 ax-1cn 11174 ax-icn 11175 ax-addcl 11176 ax-addrcl 11177 ax-mulcl 11178 ax-mulrcl 11179 ax-mulcom 11180 ax-addass 11181 ax-mulass 11182 ax-distr 11183 ax-i2m1 11184 ax-1ne0 11185 ax-1rid 11186 ax-rnegex 11187 ax-rrecex 11188 ax-cnre 11189 ax-pre-lttri 11190 ax-pre-lttrn 11191 ax-pre-ltadd 11192 ax-pre-mulgt0 11193

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7860 df-1st 7979 df-2nd 7980 df-frecs 8272 df-wrecs 8303 df-recs 8377 df-rdg 8416 df-1o 8472 df-er 8709 df-map 8828 df-en 8946 df-dom 8947 df-sdom 8948 df-fin 8949 df-card 9940 df-pnf 11257 df-mnf 11258 df-xr 11259 df-ltxr 11260 df-le 11261 df-sub 11453 df-neg 11454 df-nn 12220 df-2 12282 df-3 12283 df-n0 12480 df-z 12566 df-uz 12830 df-fz 13492 df-fzo 13635 df-hash 14298 df-word 14472 df-concat 14528 df-s1 14553 df-s2 14806 df-s3 14807 df-cgra 28493

This theorem is referenced by: iscgra1 28495 iscgrad 28496 cgrane1 28497 cgrane2 28498 cgrane3 28499 cgrane4 28500 cgrahl1 28501 cgrahl2 28502 cgracgr 28503 cgraswap 28505 cgracom 28507 cgratr 28508 flatcgra 28509 cgrabtwn 28511 cgrahl 28512 sacgr 28516

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