grimgrtri - Mathbox for Alexander van der Vekens

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Theorem grimgrtri 47961

Description: Graph isomorphisms map triangles onto triangles. (Contributed by AV, 27-Jul-2025.) (Proof shortened by AV, 24-Aug-2025.)

**Hypotheses**
Ref	Expression
grimgrtri.g	⊢ (𝜑 → 𝐺 ∈ UHGraph)
grimgrtri.h	⊢ (𝜑 → 𝐻 ∈ UHGraph)
grimgrtri.n	⊢ (𝜑 → 𝐹 ∈ (𝐺 GraphIso 𝐻))
grimgrtri.t	⊢ (𝜑 → 𝑇 ∈ (GrTriangles‘𝐺))

**Assertion**
Ref	Expression
grimgrtri	⊢ (𝜑 → (𝐹 “ 𝑇) ∈ (GrTriangles‘𝐻))

Proof of Theorem grimgrtri Dummy variables 𝑎 𝑏 𝑐 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		grimgrtri.t	. . . 4 ⊢ (𝜑 → 𝑇 ∈ (GrTriangles‘𝐺))
2		eqid 2735	. . . . 5 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺)
3		eqid 2735	. . . . 5 ⊢ (Edg‘𝐺) = (Edg‘𝐺)
4	2, 3	grtriprop 47953	. . . 4 ⊢ (𝑇 ∈ (GrTriangles‘𝐺) → ∃𝑎 ∈ (Vtx‘𝐺)∃𝑏 ∈ (Vtx‘𝐺)∃𝑐 ∈ (Vtx‘𝐺)(𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))))
5	1, 4	syl 17	. . 3 ⊢ (𝜑 → ∃𝑎 ∈ (Vtx‘𝐺)∃𝑏 ∈ (Vtx‘𝐺)∃𝑐 ∈ (Vtx‘𝐺)(𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))))
6		grimgrtri.n	. . . . . . . . 9 ⊢ (𝜑 → 𝐹 ∈ (𝐺 GraphIso 𝐻))
7		eqid 2735	. . . . . . . . . 10 ⊢ (Vtx‘𝐻) = (Vtx‘𝐻)
8	2, 7	grimf1o 47897	. . . . . . . . 9 ⊢ (𝐹 ∈ (𝐺 GraphIso 𝐻) → 𝐹:(Vtx‘𝐺)–1-1-onto→(Vtx‘𝐻))
9		f1of1 6817	. . . . . . . . 9 ⊢ (𝐹:(Vtx‘𝐺)–1-1-onto→(Vtx‘𝐻) → 𝐹:(Vtx‘𝐺)–1-1→(Vtx‘𝐻))
10	6, 8, 9	3syl 18	. . . . . . . 8 ⊢ (𝜑 → 𝐹:(Vtx‘𝐺)–1-1→(Vtx‘𝐻))
11	10	ad3antrrr 730	. . . . . . 7 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → 𝐹:(Vtx‘𝐺)–1-1→(Vtx‘𝐻))
12		simplrl 776	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) → 𝑎 ∈ (Vtx‘𝐺))
13	12	adantr 480	. . . . . . . 8 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → 𝑎 ∈ (Vtx‘𝐺))
14		simprr 772	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) → 𝑏 ∈ (Vtx‘𝐺))
15	14	adantr 480	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) → 𝑏 ∈ (Vtx‘𝐺))
16	15	adantr 480	. . . . . . . 8 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → 𝑏 ∈ (Vtx‘𝐺))
17		simplr 768	. . . . . . . 8 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → 𝑐 ∈ (Vtx‘𝐺))
18	13, 16, 17	3jca 1128	. . . . . . 7 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺) ∧ 𝑐 ∈ (Vtx‘𝐺)))
19		3simpa 1148	. . . . . . . 8 ⊢ ((𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3))
20	19	adantl 481	. . . . . . 7 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3))
21		grtrimap 47960	. . . . . . . 8 ⊢ (𝐹:(Vtx‘𝐺)–1-1→(Vtx‘𝐻) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3)) → (((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) ∧ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3)))
22	21	imp 406	. . . . . . 7 ⊢ ((𝐹:(Vtx‘𝐺)–1-1→(Vtx‘𝐻) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3))) → (((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) ∧ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3))
23	11, 18, 20, 22	syl12anc 836	. . . . . 6 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → (((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) ∧ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3))
24		grimgrtri.g	. . . . . . . . 9 ⊢ (𝜑 → 𝐺 ∈ UHGraph)
25		grimgrtri.h	. . . . . . . . 9 ⊢ (𝜑 → 𝐻 ∈ UHGraph)
26		eqid 2735	. . . . . . . . . . . . . . 15 ⊢ (Edg‘𝐻) = (Edg‘𝐻)
27	2, 3, 26	grimedg 47948	. . . . . . . . . . . . . 14 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → ({𝑎, 𝑏} ∈ (Edg‘𝐺) ↔ ((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺))))
28	2, 3, 26	grimedg 47948	. . . . . . . . . . . . . 14 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → ({𝑎, 𝑐} ∈ (Edg‘𝐺) ↔ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺))))
29	2, 3, 26	grimedg 47948	. . . . . . . . . . . . . 14 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → ({𝑏, 𝑐} ∈ (Edg‘𝐺) ↔ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))))
30	27, 28, 29	3anbi123d 1438	. . . . . . . . . . . . 13 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → (({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)) ↔ (((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺)))))
31		f1ofn 6819	. . . . . . . . . . . . . . 15 ⊢ (𝐹:(Vtx‘𝐺)–1-1-onto→(Vtx‘𝐻) → 𝐹 Fn (Vtx‘𝐺))
32		simpl 482	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → 𝐹 Fn (Vtx‘𝐺))
33		simprll 778	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → 𝑎 ∈ (Vtx‘𝐺))
34		simprlr 779	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → 𝑏 ∈ (Vtx‘𝐺))
35		fnimapr 6962	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ 𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) → (𝐹 “ {𝑎, 𝑏}) = {(𝐹‘𝑎), (𝐹‘𝑏)})
36	32, 33, 34, 35	syl3anc 1373	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (𝐹 “ {𝑎, 𝑏}) = {(𝐹‘𝑎), (𝐹‘𝑏)})
37	36	eleq1d 2819	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻)))
38	37	biimpd 229	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) → {(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻)))
39	38	adantrd 491	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) → {(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻)))
40		simprr 772	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → 𝑐 ∈ (Vtx‘𝐺))
41		fnimapr 6962	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ 𝑎 ∈ (Vtx‘𝐺) ∧ 𝑐 ∈ (Vtx‘𝐺)) → (𝐹 “ {𝑎, 𝑐}) = {(𝐹‘𝑎), (𝐹‘𝑐)})
42	32, 33, 40, 41	syl3anc 1373	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (𝐹 “ {𝑎, 𝑐}) = {(𝐹‘𝑎), (𝐹‘𝑐)})
43	42	eleq1d 2819	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
44	43	biimpd 229	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) → {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
45	44	adantrd 491	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) → {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
46		fnimapr 6962	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺) ∧ 𝑐 ∈ (Vtx‘𝐺)) → (𝐹 “ {𝑏, 𝑐}) = {(𝐹‘𝑏), (𝐹‘𝑐)})
47	32, 34, 40, 46	syl3anc 1373	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (𝐹 “ {𝑏, 𝑐}) = {(𝐹‘𝑏), (𝐹‘𝑐)})
48	47	eleq1d 2819	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
49	48	biimpd 229	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) → {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
50	49	adantrd 491	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → (((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺)) → {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
51	39, 45, 50	3anim123d 1445	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐹 Fn (Vtx‘𝐺) ∧ ((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺))) → ((((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻))))
52	51	ex 412	. . . . . . . . . . . . . . . 16 ⊢ (𝐹 Fn (Vtx‘𝐺) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ((((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
53	52	com23 86	. . . . . . . . . . . . . . 15 ⊢ (𝐹 Fn (Vtx‘𝐺) → ((((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
54	8, 31, 53	3syl 18	. . . . . . . . . . . . . 14 ⊢ (𝐹 ∈ (𝐺 GraphIso 𝐻) → ((((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
55	54	3ad2ant3 1135	. . . . . . . . . . . . 13 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → ((((𝐹 “ {𝑎, 𝑏}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑏} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑎, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑎, 𝑐} ⊆ (Vtx‘𝐺)) ∧ ((𝐹 “ {𝑏, 𝑐}) ∈ (Edg‘𝐻) ∧ {𝑏, 𝑐} ⊆ (Vtx‘𝐺))) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
56	30, 55	sylbid 240	. . . . . . . . . . . 12 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → (({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
57	56	2a1d 26	. . . . . . . . . . 11 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → (𝑇 = {𝑎, 𝑏, 𝑐} → ((♯‘𝑇) = 3 → (({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))))
58	57	3impd 1349	. . . . . . . . . 10 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → ((𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
59	58	com23 86	. . . . . . . . 9 ⊢ ((𝐺 ∈ UHGraph ∧ 𝐻 ∈ UHGraph ∧ 𝐹 ∈ (𝐺 GraphIso 𝐻)) → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ((𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
60	24, 25, 6, 59	syl3anc 1373	. . . . . . . 8 ⊢ (𝜑 → (((𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺)) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ((𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
61	60	impl 455	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) → ((𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻))))
62	61	imp 406	. . . . . 6 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
63		tpeq1 4718	. . . . . . . . . . 11 ⊢ (𝑥 = (𝐹‘𝑎) → {𝑥, 𝑦, 𝑧} = {(𝐹‘𝑎), 𝑦, 𝑧})
64	63	eqeq2d 2746	. . . . . . . . . 10 ⊢ (𝑥 = (𝐹‘𝑎) → ((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ↔ (𝐹 “ 𝑇) = {(𝐹‘𝑎), 𝑦, 𝑧}))
65		preq1 4709	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝐹‘𝑎) → {𝑥, 𝑦} = {(𝐹‘𝑎), 𝑦})
66	65	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑥 = (𝐹‘𝑎) → ({𝑥, 𝑦} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻)))
67		preq1 4709	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝐹‘𝑎) → {𝑥, 𝑧} = {(𝐹‘𝑎), 𝑧})
68	67	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑥 = (𝐹‘𝑎) → ({𝑥, 𝑧} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻)))
69	66, 68	3anbi12d 1439	. . . . . . . . . 10 ⊢ (𝑥 = (𝐹‘𝑎) → (({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)) ↔ ({(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))))
70	64, 69	3anbi13d 1440	. . . . . . . . 9 ⊢ (𝑥 = (𝐹‘𝑎) → (((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))) ↔ ((𝐹 “ 𝑇) = {(𝐹‘𝑎), 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)))))
71		tpeq2 4719	. . . . . . . . . . 11 ⊢ (𝑦 = (𝐹‘𝑏) → {(𝐹‘𝑎), 𝑦, 𝑧} = {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧})
72	71	eqeq2d 2746	. . . . . . . . . 10 ⊢ (𝑦 = (𝐹‘𝑏) → ((𝐹 “ 𝑇) = {(𝐹‘𝑎), 𝑦, 𝑧} ↔ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧}))
73		preq2 4710	. . . . . . . . . . . 12 ⊢ (𝑦 = (𝐹‘𝑏) → {(𝐹‘𝑎), 𝑦} = {(𝐹‘𝑎), (𝐹‘𝑏)})
74	73	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑦 = (𝐹‘𝑏) → ({(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻)))
75		preq1 4709	. . . . . . . . . . . 12 ⊢ (𝑦 = (𝐹‘𝑏) → {𝑦, 𝑧} = {(𝐹‘𝑏), 𝑧})
76	75	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑦 = (𝐹‘𝑏) → ({𝑦, 𝑧} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻)))
77	74, 76	3anbi13d 1440	. . . . . . . . . 10 ⊢ (𝑦 = (𝐹‘𝑏) → (({(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)) ↔ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻))))
78	72, 77	3anbi13d 1440	. . . . . . . . 9 ⊢ (𝑦 = (𝐹‘𝑏) → (((𝐹 “ 𝑇) = {(𝐹‘𝑎), 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), 𝑦} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))) ↔ ((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻)))))
79		tpeq3 4720	. . . . . . . . . . 11 ⊢ (𝑧 = (𝐹‘𝑐) → {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧} = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)})
80	79	eqeq2d 2746	. . . . . . . . . 10 ⊢ (𝑧 = (𝐹‘𝑐) → ((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧} ↔ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)}))
81		preq2 4710	. . . . . . . . . . . 12 ⊢ (𝑧 = (𝐹‘𝑐) → {(𝐹‘𝑎), 𝑧} = {(𝐹‘𝑎), (𝐹‘𝑐)})
82	81	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑧 = (𝐹‘𝑐) → ({(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
83		preq2 4710	. . . . . . . . . . . 12 ⊢ (𝑧 = (𝐹‘𝑐) → {(𝐹‘𝑏), 𝑧} = {(𝐹‘𝑏), (𝐹‘𝑐)})
84	83	eleq1d 2819	. . . . . . . . . . 11 ⊢ (𝑧 = (𝐹‘𝑐) → ({(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻) ↔ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))
85	82, 84	3anbi23d 1441	. . . . . . . . . 10 ⊢ (𝑧 = (𝐹‘𝑐) → (({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻)) ↔ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻))))
86	80, 85	3anbi13d 1440	. . . . . . . . 9 ⊢ (𝑧 = (𝐹‘𝑐) → (((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), 𝑧} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), 𝑧} ∈ (Edg‘𝐻))) ↔ ((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))))
87	70, 78, 86	rspc3ev 3618	. . . . . . . 8 ⊢ ((((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) ∧ ((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)))) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))))
88	87	3exp2 1355	. . . . . . 7 ⊢ (((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) → ((𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} → ((♯‘(𝐹 “ 𝑇)) = 3 → (({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)))))))
89	88	3imp 1110	. . . . . 6 ⊢ ((((𝐹‘𝑎) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑏) ∈ (Vtx‘𝐻) ∧ (𝐹‘𝑐) ∈ (Vtx‘𝐻)) ∧ (𝐹 “ 𝑇) = {(𝐹‘𝑎), (𝐹‘𝑏), (𝐹‘𝑐)} ∧ (♯‘(𝐹 “ 𝑇)) = 3) → (({(𝐹‘𝑎), (𝐹‘𝑏)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑎), (𝐹‘𝑐)} ∈ (Edg‘𝐻) ∧ {(𝐹‘𝑏), (𝐹‘𝑐)} ∈ (Edg‘𝐻)) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)))))
90	23, 62, 89	sylc 65	. . . . 5 ⊢ ((((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) ∧ 𝑐 ∈ (Vtx‘𝐺)) ∧ (𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺)))) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))))
91	90	rexlimdva2 3143	. . . 4 ⊢ ((𝜑 ∧ (𝑎 ∈ (Vtx‘𝐺) ∧ 𝑏 ∈ (Vtx‘𝐺))) → (∃𝑐 ∈ (Vtx‘𝐺)(𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)))))
92	91	rexlimdvva 3198	. . 3 ⊢ (𝜑 → (∃𝑎 ∈ (Vtx‘𝐺)∃𝑏 ∈ (Vtx‘𝐺)∃𝑐 ∈ (Vtx‘𝐺)(𝑇 = {𝑎, 𝑏, 𝑐} ∧ (♯‘𝑇) = 3 ∧ ({𝑎, 𝑏} ∈ (Edg‘𝐺) ∧ {𝑎, 𝑐} ∈ (Edg‘𝐺) ∧ {𝑏, 𝑐} ∈ (Edg‘𝐺))) → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻)))))
93	5, 92	mpd 15	. 2 ⊢ (𝜑 → ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))))
94	7, 26	isgrtri 47955	. 2 ⊢ ((𝐹 “ 𝑇) ∈ (GrTriangles‘𝐻) ↔ ∃𝑥 ∈ (Vtx‘𝐻)∃𝑦 ∈ (Vtx‘𝐻)∃𝑧 ∈ (Vtx‘𝐻)((𝐹 “ 𝑇) = {𝑥, 𝑦, 𝑧} ∧ (♯‘(𝐹 “ 𝑇)) = 3 ∧ ({𝑥, 𝑦} ∈ (Edg‘𝐻) ∧ {𝑥, 𝑧} ∈ (Edg‘𝐻) ∧ {𝑦, 𝑧} ∈ (Edg‘𝐻))))
95	93, 94	sylibr 234	1 ⊢ (𝜑 → (𝐹 “ 𝑇) ∈ (GrTriangles‘𝐻))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 395 ∧ w3a 1086 = wceq 1540 ∈ wcel 2108 ∃wrex 3060 ⊆ wss 3926 {cpr 4603 {ctp 4605 “ cima 5657 Fn wfn 6526 –1-1→wf1 6528 –1-1-onto→wf1o 6530 ‘cfv 6531 (class class class)co 7405 3c3 12296 ♯chash 14348 Vtxcvtx 28975 Edgcedg 29026 UHGraphcuhgr 29035 GraphIso cgrim 47888 GrTrianglescgrtri 47949

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 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206

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 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-tp 4606 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7862 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-3o 8482 df-oadd 8484 df-er 8719 df-map 8842 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-dju 9915 df-card 9953 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-nn 12241 df-2 12303 df-3 12304 df-n0 12502 df-xnn0 12575 df-z 12589 df-uz 12853 df-fz 13525 df-fzo 13672 df-hash 14349 df-edg 29027 df-uhgr 29037 df-grim 47891 df-grtri 47950

This theorem is referenced by: usgrexmpl12ngric 48042

W3C validator