Theorem colline 25344

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 764	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝐺 ∈ TarskiG)
6		colline.1	. . . . . . . . 9 ⊢ (𝜑 → 𝑋 ∈ 𝑃)
7	6	ad4antr 764	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ∈ 𝑃)
8		simplr 788	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑥 ∈ 𝑃)
9		simpr 476	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ≠ 𝑥)
10	1, 2, 3, 5, 7, 8, 9	tgelrnln 25325	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → (𝑋𝐿𝑥) ∈ ran 𝐿)
11	1, 2, 3, 5, 7, 8, 9	tglinerflx1 25328	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 ∈ (𝑋𝐿𝑥))
12		simp-4r 803	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑌 = 𝑍)
13		simpllr 795	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑋 = 𝑍)
14	13, 11	eqeltrrd 2689	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑍 ∈ (𝑋𝐿𝑥))
15	12, 14	eqeltrd 2688	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → 𝑌 ∈ (𝑋𝐿𝑥))
16		eleq2 2677	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑋𝐿𝑥)))
17		eleq2 2677	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑋𝐿𝑥)))
18		eleq2 2677	. . . . . . . . 9 ⊢ (𝑎 = (𝑋𝐿𝑥) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑋𝐿𝑥)))
19	16, 17, 18	3anbi123d 1391	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑥) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑥) ∧ 𝑌 ∈ (𝑋𝐿𝑥) ∧ 𝑍 ∈ (𝑋𝐿𝑥))))
20	19	rspcev 3282	. . . . . . 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 1320	. . . . . 6 ⊢ (((((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) ∧ 𝑥 ∈ 𝑃) ∧ 𝑋 ≠ 𝑥) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
22		eqid 2610	. . . . . . . 8 ⊢ (dist‘𝐺) = (dist‘𝐺)
23		colline.4	. . . . . . . 8 ⊢ (𝜑 → 2 ≤ (#‘𝑃))
24	1, 22, 2, 4, 23, 6	tglowdim1i 25196	. . . . . . 7 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 𝑋 ≠ 𝑥)
25	24	ad2antrr 758	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑥 ∈ 𝑃 𝑋 ≠ 𝑥)
26	21, 25	r19.29a 3060	. . . . 5 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
27	4	ad2antrr 758	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝐺 ∈ TarskiG)
28	6	ad2antrr 758	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ∈ 𝑃)
29		colline.3	. . . . . . . 8 ⊢ (𝜑 → 𝑍 ∈ 𝑃)
30	29	ad2antrr 758	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑍 ∈ 𝑃)
31		simpr 476	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ≠ 𝑍)
32	1, 2, 3, 27, 28, 30, 31	tgelrnln 25325	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → (𝑋𝐿𝑍) ∈ ran 𝐿)
33	1, 2, 3, 27, 28, 30, 31	tglinerflx1 25328	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑋 ∈ (𝑋𝐿𝑍))
34		simplr 788	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑌 = 𝑍)
35	1, 2, 3, 27, 28, 30, 31	tglinerflx2 25329	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑍 ∈ (𝑋𝐿𝑍))
36	34, 35	eqeltrd 2688	. . . . . 6 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → 𝑌 ∈ (𝑋𝐿𝑍))
37		eleq2 2677	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑋𝐿𝑍)))
38		eleq2 2677	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑋𝐿𝑍)))
39		eleq2 2677	. . . . . . . 8 ⊢ (𝑎 = (𝑋𝐿𝑍) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑋𝐿𝑍)))
40	37, 38, 39	3anbi123d 1391	. . . . . . 7 ⊢ (𝑎 = (𝑋𝐿𝑍) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑋𝐿𝑍) ∧ 𝑌 ∈ (𝑋𝐿𝑍) ∧ 𝑍 ∈ (𝑋𝐿𝑍))))
41	40	rspcev 3282	. . . . . 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 1320	. . . . 5 ⊢ (((𝜑 ∧ 𝑌 = 𝑍) ∧ 𝑋 ≠ 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
43	26, 42	pm2.61dane 2869	. . . 4 ⊢ ((𝜑 ∧ 𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
44	43	adantlr 747	. . 3 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 = 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
45		simpll 786	. . . . 5 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝜑)
46		simpr 476	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
47	46	neneqd 2787	. . . . . 6 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → ¬ 𝑌 = 𝑍)
48		simplr 788	. . . . . 6 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
49		orel2 397	. . . . . 6 ⊢ (¬ 𝑌 = 𝑍 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍)))
50	47, 48, 49	sylc 63	. . . . 5 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
51	4	ad2antrr 758	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝐺 ∈ TarskiG)
52		colline.2	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ 𝑃)
53	52	ad2antrr 758	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑃)
54	29	ad2antrr 758	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ 𝑃)
55		simpr 476	. . . . . 6 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
56	1, 2, 3, 51, 53, 54, 55	tgelrnln 25325	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
57	45, 50, 46, 56	syl21anc 1317	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → (𝑌𝐿𝑍) ∈ ran 𝐿)
58	1, 2, 3, 51, 53, 54, 55	tglinerflx1 25328	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
59	45, 50, 46, 58	syl21anc 1317	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ (𝑌𝐿𝑍))
60	1, 2, 3, 51, 53, 54, 55	tglinerflx2 25329	. . . . 5 ⊢ (((𝜑 ∧ 𝑋 ∈ (𝑌𝐿𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
61	45, 50, 46, 60	syl21anc 1317	. . . 4 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ (𝑌𝐿𝑍))
62		eleq2 2677	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑋 ∈ 𝑎 ↔ 𝑋 ∈ (𝑌𝐿𝑍)))
63		eleq2 2677	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑌 ∈ 𝑎 ↔ 𝑌 ∈ (𝑌𝐿𝑍)))
64		eleq2 2677	. . . . . 6 ⊢ (𝑎 = (𝑌𝐿𝑍) → (𝑍 ∈ 𝑎 ↔ 𝑍 ∈ (𝑌𝐿𝑍)))
65	62, 63, 64	3anbi123d 1391	. . . . 5 ⊢ (𝑎 = (𝑌𝐿𝑍) → ((𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎) ↔ (𝑋 ∈ (𝑌𝐿𝑍) ∧ 𝑌 ∈ (𝑌𝐿𝑍) ∧ 𝑍 ∈ (𝑌𝐿𝑍))))
66	65	rspcev 3282	. . . 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 1320	. . 3 ⊢ (((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) ∧ 𝑌 ≠ 𝑍) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
68	44, 67	pm2.61dane 2869	. 2 ⊢ ((𝜑 ∧ (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍)) → ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎))
69		df-ne 2782	. . . . . 6 ⊢ (𝑌 ≠ 𝑍 ↔ ¬ 𝑌 = 𝑍)
70		simplr1 1096	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ 𝑎)
71	4	ad3antrrr 762	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝐺 ∈ TarskiG)
72	52	ad3antrrr 762	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑃)
73	29	ad3antrrr 762	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑍 ∈ 𝑃)
74		simpr 476	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ≠ 𝑍)
75		simpllr 795	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑎 ∈ ran 𝐿)
76		simplr2 1097	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑌 ∈ 𝑎)
77		simplr3 1098	. . . . . . . . 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 25331	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑎 = (𝑌𝐿𝑍))
79	70, 78	eleqtrd 2690	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) ∧ 𝑌 ≠ 𝑍) → 𝑋 ∈ (𝑌𝐿𝑍))
80	79	ex 449	. . . . . 6 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑌 ≠ 𝑍 → 𝑋 ∈ (𝑌𝐿𝑍)))
81	69, 80	syl5bir 232	. . . . 5 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (¬ 𝑌 = 𝑍 → 𝑋 ∈ (𝑌𝐿𝑍)))
82	81	orrd 392	. . . 4 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑌 = 𝑍 ∨ 𝑋 ∈ (𝑌𝐿𝑍)))
83	82	orcomd 402	. . 3 ⊢ (((𝜑 ∧ 𝑎 ∈ ran 𝐿) ∧ (𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
84	83	r19.29an 3059	. 2 ⊢ ((𝜑 ∧ ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)) → (𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍))
85	68, 84	impbida 873	1 ⊢ (𝜑 → ((𝑋 ∈ (𝑌𝐿𝑍) ∨ 𝑌 = 𝑍) ↔ ∃𝑎 ∈ ran 𝐿(𝑋 ∈ 𝑎 ∧ 𝑌 ∈ 𝑎 ∧ 𝑍 ∈ 𝑎)))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∨ wo 382   ∧ wa 383   ∧ w3a 1031   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∃wrex 2897   class class class wbr 4583  ran crn 5039  ‘cfv 5804  (class class class)co 6549   ≤ cle 9954  2c2 10947  #chash 12979  Basecbs 15695  distcds 15777  TarskiGcstrkg 25129  Itvcitv 25135  LineGclng 25136

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-pm 7747  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-card 8648  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-nn 10898  df-2 10956  df-3 10957  df-n0 11170  df-xnn0 11241  df-z 11255  df-uz 11564  df-fz 12198  df-fzo 12335  df-hash 12980  df-word 13154  df-concat 13156  df-s1 13157  df-s2 13444  df-s3 13445  df-trkgc 25147  df-trkgb 25148  df-trkgcb 25149  df-trkg 25152  df-cgrg 25206

This theorem is referenced by: (None)