Theorem colline 25544

Description: Three points are colinear iff there is a line through all three of them. Theorem 6.23 of [Schwabhauser] p. 46. (Contributed by Thierry Arnoux, 28-May-2019.)

Hypotheses

Ref	Expression
tglineintmo.p	⊢ 𝑃 = (Base‘𝐺)
tglineintmo.i	⊢ 𝐼 = (Itv‘𝐺)
tglineintmo.l	⊢ 𝐿 = (LineG‘𝐺)
tglineintmo.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
colline.1	⊢ (𝜑 → 𝑋 ∈ 𝑃)
colline.2	⊢ (𝜑 → 𝑌 ∈ 𝑃)
colline.3	⊢ (𝜑 → 𝑍 ∈ 𝑃)
colline.4	⊢ (𝜑 → 2 ≤ (#‘𝑃))

Assertion

Ref	Expression
colline	⊢ (𝜑 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) ↔ ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)))

Distinct variable groups:   𝐿,𝑎   𝑋,𝑎   𝑌,𝑎   𝑍,𝑎   𝜑,𝑎

Allowed substitution hints:   𝑃(𝑎)   𝐺(𝑎)   𝐼(𝑎)

Proof of Theorem colline

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		tglineintmo.p	. . . . . . . 8 ⊢ 𝑃 = (Base‘𝐺)
2		tglineintmo.i	. . . . . . . 8 ⊢ 𝐼 = (Itv‘𝐺)
3		tglineintmo.l	. . . . . . . 8 ⊢ 𝐿 = (LineG‘𝐺)
4		tglineintmo.g	. . . . . . . . 9 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
5	4	ad4antr 768	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝐺 ∈ TarskiG)
6		colline.1	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ 𝑃)
7	6	ad4antr 768	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ∈ 𝑃)
8		simplr 792	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑥 ∈ 𝑃)
9		simpr 477	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ≠ 𝑥)
10	1, 2, 3, 5, 7, 8, 9	tgelrnln 25525	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → (𝑋𝐿𝑥) ∈ ran 𝐿)
11	1, 2, 3, 5, 7, 8, 9	tglinerflx1 25528	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ∈ (𝑋𝐿𝑥))
12		simp-4r 807	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑌 = 𝑍)
13		simpllr 799	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 = 𝑍)
14	13, 11	eqeltrrd 2702	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑍 ∈ (𝑋𝐿𝑥))
15	12, 14	eqeltrd 2701	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑌 ∈ (𝑋𝐿𝑥))
16		eleq2 2690	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑋𝐿𝑥)))
17		eleq2 2690	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑋𝐿𝑥)))
18		eleq2 2690	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑋𝐿𝑥)))
19	16, 17, 18	3anbi123d 1399	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑥) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑥) ∧ 𝑌 ∈ (𝑋𝐿𝑥) ∧ 𝑍 ∈ (𝑋𝐿𝑥))))
20	19	rspcev 3309	. . . . . . 7 ⊢ (((𝑋𝐿𝑥) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑋𝐿𝑥) ∧ 𝑌 ∈ (𝑋𝐿𝑥) ∧ 𝑍 ∈ (𝑋𝐿𝑥))) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
21	10, 11, 15, 14, 20	syl13anc 1328	. . . . . 6 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
22		eqid 2622	. . . . . . . 8 ⊢ (dist‘𝐺) = (dist‘𝐺)
23		colline.4	. . . . . . . 8 ⊢ (𝜑 → 2 ≤ (#‘𝑃))
24	1, 22, 2, 4, 23, 6	tglowdim1i 25396	. . . . . . 7 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 𝑋 ≠ 𝑥)
25	24	ad2antrr 762	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑥 ∈ 𝑃 𝑋 ≠ 𝑥)
26	21, 25	r19.29a 3078	. . . . 5 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
27	4	ad2antrr 762	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝐺 ∈ TarskiG)
28	6	ad2antrr 762	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ∈ 𝑃)
29		colline.3	. . . . . . . 8 ⊢ (𝜑 → 𝑍 ∈ 𝑃)
30	29	ad2antrr 762	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑍 ∈ 𝑃)
31		simpr 477	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ≠ 𝑍)
32	1, 2, 3, 27, 28, 30, 31	tgelrnln 25525	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → (𝑋𝐿𝑍) ∈ ran 𝐿)
33	1, 2, 3, 27, 28, 30, 31	tglinerflx1 25528	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ∈ (𝑋𝐿𝑍))
34		simplr 792	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑌 = 𝑍)
35	1, 2, 3, 27, 28, 30, 31	tglinerflx2 25529	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑍 ∈ (𝑋𝐿𝑍))
36	34, 35	eqeltrd 2701	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑌 ∈ (𝑋𝐿𝑍))
37		eleq2 2690	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑋𝐿𝑍)))
38		eleq2 2690	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑋𝐿𝑍)))
39		eleq2 2690	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑋𝐿𝑍)))
40	37, 38, 39	3anbi123d 1399	. . . . . . 7 ⊢ (𝑎 = (𝑋𝐿𝑍) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑍) ∧ 𝑌 ∈ (𝑋𝐿𝑍) ∧ 𝑍 ∈ (𝑋𝐿𝑍))))
41	40	rspcev 3309	. . . . . 6 ⊢ (((𝑋𝐿𝑍) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑋𝐿𝑍) ∧ 𝑌 ∈ (𝑋𝐿𝑍) ∧ 𝑍 ∈ (𝑋𝐿𝑍))) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
42	32, 33, 36, 35, 41	syl13anc 1328	. . . . 5 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
43	26, 42	pm2.61dane 2881	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
44	43	adantlr 751	. . 3 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
45		simpll 790	. . . . 5 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝜑)
46		simpr 477	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
47	46	neneqd 2799	. . . . . 6 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → ¬ 𝑌 = 𝑍)
48		simplr 792	. . . . . 6 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
49		orel2 398	. . . . . 6 ⊢ (¬ 𝑌 = 𝑍 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍)))
50	47, 48, 49	sylc 65	. . . . 5 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
51	4	ad2antrr 762	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝐺 ∈ TarskiG)
52		colline.2	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ 𝑃)
53	52	ad2antrr 762	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑃)
54	29	ad2antrr 762	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ 𝑃)
55		simpr 477	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
56	1, 2, 3, 51, 53, 54, 55	tgelrnln 25525	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
57	45, 50, 46, 56	syl21anc 1325	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
58	1, 2, 3, 51, 53, 54, 55	tglinerflx1 25528	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
59	45, 50, 46, 58	syl21anc 1325	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
60	1, 2, 3, 51, 53, 54, 55	tglinerflx2 25529	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
61	45, 50, 46, 60	syl21anc 1325	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
62		eleq2 2690	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑌𝐿𝑍)))
63		eleq2 2690	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑌𝐿𝑍)))
64		eleq2 2690	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑌𝐿𝑍)))
65	62, 63, 64	3anbi123d 1399	. . . . 5 ⊢ (𝑎 = (𝑌𝐿𝑍) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑌𝐿𝑍) ∧ 𝑌 ∈ (𝑌𝐿𝑍) ∧ 𝑍 ∈ (𝑌𝐿𝑍))))
66	65	rspcev 3309	. . . 4 ⊢ (((𝑌𝐿𝑍) ∈ ran 𝐿 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∧ 𝑌 ∈ (𝑌𝐿𝑍) ∧ 𝑍 ∈ (𝑌𝐿𝑍))) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
67	57, 50, 59, 61, 66	syl13anc 1328	. . 3 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
68	44, 67	pm2.61dane 2881	. 2 ⊢ ((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
69		df-ne 2795	. . . . . 6 ⊢ (𝑌 ≠ 𝑍 ↔ ¬ 𝑌 = 𝑍)
70		simplr1 1103	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ 𝑎)
71	4	ad3antrrr 766	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝐺 ∈ TarskiG)
72	52	ad3antrrr 766	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑃)
73	29	ad3antrrr 766	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ 𝑃)
74		simpr 477	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
75		simpllr 799	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑎 ∈ ran 𝐿)
76		simplr2 1104	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑎)
77		simplr3 1105	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ 𝑎)
78	1, 2, 3, 71, 72, 73, 74, 74, 75, 76, 77	tglinethru 25531	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑎 = (𝑌𝐿𝑍))
79	70, 78	eleqtrd 2703	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
80	79	ex 450	. . . . . 6 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑌 ≠ 𝑍 → 𝑋 ∈ (𝑌𝐿𝑍)))
81	69, 80	syl5bir 233	. . . . 5 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (¬ 𝑌 = 𝑍 → 𝑋 ∈ (𝑌𝐿𝑍)))
82	81	orrd 393	. . . 4 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑌 = 𝑍 ∨ 𝑋 ∈ (𝑌𝐿𝑍)))
83	82	orcomd 403	. . 3 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
84	83	r19.29an 3077	. 2 ⊢ ((𝜑 ∧ ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
85	68, 84	impbida 877	1 ⊢ (𝜑 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) ↔ ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∨ wo 383   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ∃wrex 2913   class class class wbr 4653  ran crn 5115  ‘cfv 5888  (class class class)co 6650   ≤ cle 10075  2c2 11070  #chash 13117  Basecbs 15857  distcds 15950  TarskiGcstrkg 25329  Itvcitv 25335  LineGclng 25336

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-er 7742  df-pm 7860  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-card 8765  df-cda 8990  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-nn 11021  df-2 11079  df-3 11080  df-n0 11293  df-xnn0 11364  df-z 11378  df-uz 11688  df-fz 12327  df-fzo 12466  df-hash 13118  df-word 13299  df-concat 13301  df-s1 13302  df-s2 13593  df-s3 13594  df-trkgc 25347  df-trkgb 25348  df-trkgcb 25349  df-trkg 25352  df-cgrg 25406

This theorem is referenced by: (None)