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Theorem hlcgrex 27857

Description: Construct a point on a half-line, at a given distance of its origin. (Contributed by Thierry Arnoux, 1-Aug-2020.)

**Hypotheses**
Ref	Expression
ishlg.p	⊢ 𝑃 = (Base‘𝐺)
ishlg.i	⊢ 𝐼 = (Itv‘𝐺)
ishlg.k	⊢ 𝐾 = (hlG‘𝐺)
ishlg.a	⊢ (𝜑 → 𝐴 ∈ 𝑃)
ishlg.b	⊢ (𝜑 → 𝐵 ∈ 𝑃)
ishlg.c	⊢ (𝜑 → 𝐶 ∈ 𝑃)
hlln.1	⊢ (𝜑 → 𝐺 ∈ TarskiG)
hltr.d	⊢ (𝜑 → 𝐷 ∈ 𝑃)
hlcgrex.m	⊢ − = (dist‘𝐺)
hlcgrex.1	⊢ (𝜑 → 𝐷 ≠ 𝐴)
hlcgrex.2	⊢ (𝜑 → 𝐵 ≠ 𝐶)

**Assertion**
Ref	Expression
hlcgrex	⊢ (𝜑 → ∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))

Distinct variable groups: 𝑥, − 𝑥,𝐴 𝑥,𝐵 𝑥,𝐶 𝑥,𝐷 𝑥,𝐾 𝑥,𝐼 𝑥,𝑃 𝜑,𝑥 Allowed substitution hint: 𝐺(𝑥)

Proof of Theorem hlcgrex Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ishlg.p	. . . 4 ⊢ 𝑃 = (Base‘𝐺)
2		hlcgrex.m	. . . 4 ⊢ − = (dist‘𝐺)
3		ishlg.i	. . . 4 ⊢ 𝐼 = (Itv‘𝐺)
4		hlln.1	. . . . 5 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
5	4	ad2antrr 725	. . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → 𝐺 ∈ TarskiG)
6		simplr 768	. . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → 𝑦 ∈ 𝑃)
7		ishlg.a	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
8	7	ad2antrr 725	. . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → 𝐴 ∈ 𝑃)
9		ishlg.b	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
10	9	ad2antrr 725	. . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → 𝐵 ∈ 𝑃)
11		ishlg.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
12	11	ad2antrr 725	. . . 4 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → 𝐶 ∈ 𝑃)
13	1, 2, 3, 5, 6, 8, 10, 12	axtgsegcon 27705	. . 3 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → ∃𝑥 ∈ 𝑃 (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))
14	5	ad2antrr 725	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐺 ∈ TarskiG)
15	10	ad2antrr 725	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐵 ∈ 𝑃)
16	12	ad2antrr 725	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐶 ∈ 𝑃)
17		simplr 768	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝑥 ∈ 𝑃)
18	8	ad2antrr 725	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐴 ∈ 𝑃)
19		simprr 772	. . . . . . . . . 10 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝐴 − 𝑥) = (𝐵 − 𝐶))
20	1, 2, 3, 14, 18, 17, 15, 16, 19	tgcgrcoml 27720	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝑥 − 𝐴) = (𝐵 − 𝐶))
21	20	eqcomd 2739	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝐵 − 𝐶) = (𝑥 − 𝐴))
22		hlcgrex.2	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ≠ 𝐶)
23	22	ad4antr 731	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐵 ≠ 𝐶)
24	1, 2, 3, 14, 15, 16, 17, 18, 21, 23	tgcgrneq 27724	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝑥 ≠ 𝐴)
25		hlcgrex.1	. . . . . . . 8 ⊢ (𝜑 → 𝐷 ≠ 𝐴)
26	25	ad4antr 731	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐷 ≠ 𝐴)
27	6	ad2antrr 725	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝑦 ∈ 𝑃)
28		hltr.d	. . . . . . . . 9 ⊢ (𝜑 → 𝐷 ∈ 𝑃)
29	28	ad4antr 731	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐷 ∈ 𝑃)
30		simpllr 775	. . . . . . . . . 10 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦))
31	30	simprd 497	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐴 ≠ 𝑦)
32	31	necomd 2997	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝑦 ≠ 𝐴)
33		simprl 770	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐴 ∈ (𝑦𝐼𝑥))
34	30	simpld 496	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐴 ∈ (𝐷𝐼𝑦))
35	1, 2, 3, 14, 29, 18, 27, 34	tgbtwncom 27729	. . . . . . . 8 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝐴 ∈ (𝑦𝐼𝐷))
36	1, 3, 14, 27, 18, 17, 29, 32, 33, 35	tgbtwnconn2 27817	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝑥 ∈ (𝐴𝐼𝐷) ∨ 𝐷 ∈ (𝐴𝐼𝑥)))
37		ishlg.k	. . . . . . . 8 ⊢ 𝐾 = (hlG‘𝐺)
38	1, 3, 37, 17, 29, 18, 14	ishlg 27843	. . . . . . 7 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝑥(𝐾‘𝐴)𝐷 ↔ (𝑥 ≠ 𝐴 ∧ 𝐷 ≠ 𝐴 ∧ (𝑥 ∈ (𝐴𝐼𝐷) ∨ 𝐷 ∈ (𝐴𝐼𝑥)))))
39	24, 26, 36, 38	mpbir3and 1343	. . . . . 6 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → 𝑥(𝐾‘𝐴)𝐷)
40	39, 19	jca 513	. . . . 5 ⊢ (((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) ∧ (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))) → (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))
41	40	ex 414	. . . 4 ⊢ ((((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) ∧ 𝑥 ∈ 𝑃) → ((𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) → (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))))
42	41	reximdva 3169	. . 3 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → (∃𝑥 ∈ 𝑃 (𝐴 ∈ (𝑦𝐼𝑥) ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) → ∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶))))
43	13, 42	mpd 15	. 2 ⊢ (((𝜑 ∧ 𝑦 ∈ 𝑃) ∧ (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦)) → ∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))
44	1	fvexi 6903	. . . . 5 ⊢ 𝑃 ∈ V
45	44	a1i 11	. . . 4 ⊢ (𝜑 → 𝑃 ∈ V)
46	45, 9, 11, 22	nehash2 14432	. . 3 ⊢ (𝜑 → 2 ≤ (♯‘𝑃))
47	1, 2, 3, 4, 28, 7, 46	tgbtwndiff 27747	. 2 ⊢ (𝜑 → ∃𝑦 ∈ 𝑃 (𝐴 ∈ (𝐷𝐼𝑦) ∧ 𝐴 ≠ 𝑦))
48	43, 47	r19.29a 3163	1 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 397 ∨ wo 846 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 ∃wrex 3071 Vcvv 3475 class class class wbr 5148 ‘cfv 6541 (class class class)co 7406 Basecbs 17141 distcds 17203 TarskiGcstrkg 27668 Itvcitv 27674 hlGchlg 27841

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 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184

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 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-tp 4633 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 6298 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-om 7853 df-1st 7972 df-2nd 7973 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-1o 8463 df-oadd 8467 df-er 8700 df-pm 8820 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-dju 9893 df-card 9931 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-nn 12210 df-2 12272 df-3 12273 df-n0 12470 df-xnn0 12542 df-z 12556 df-uz 12820 df-fz 13482 df-fzo 13625 df-hash 14288 df-word 14462 df-concat 14518 df-s1 14543 df-s2 14796 df-s3 14797 df-trkgc 27689 df-trkgb 27690 df-trkgcb 27691 df-trkg 27694 df-cgrg 27752 df-hlg 27842

This theorem is referenced by: hlcgreu 27859 trgcopy 28045 cgraswap 28061 cgracom 28063 cgratr 28064 acopy 28074 acopyeu 28075 tgasa1 28099

W3C validator