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Theorem hlcgreu 28136

Description: The point constructed in hlcgrex 28134 is unique. Theorem 6.11 of [Schwabhauser] p. 44. (Contributed by Thierry Arnoux, 9-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
hlcgreu	⊢ (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 hlcgreu Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ishlg.p	. . 3 ⊢ 𝑃 = (Base‘𝐺)
2		ishlg.i	. . 3 ⊢ 𝐼 = (Itv‘𝐺)
3		ishlg.k	. . 3 ⊢ 𝐾 = (hlG‘𝐺)
4		ishlg.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
5		ishlg.b	. . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
6		ishlg.c	. . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
7		hlln.1	. . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
8		hltr.d	. . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑃)
9		hlcgrex.m	. . 3 ⊢ − = (dist‘𝐺)
10		hlcgrex.1	. . 3 ⊢ (𝜑 → 𝐷 ≠ 𝐴)
11		hlcgrex.2	. . 3 ⊢ (𝜑 → 𝐵 ≠ 𝐶)
12	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11	hlcgrex 28134	. 2 ⊢ (𝜑 → ∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))
13	4	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐴 ∈ 𝑃)
14	5	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐵 ∈ 𝑃)
15	6	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐶 ∈ 𝑃)
16	7	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐺 ∈ TarskiG)
17	8	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐷 ∈ 𝑃)
18	10	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐷 ≠ 𝐴)
19	11	ad3antrrr 726	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝐵 ≠ 𝐶)
20		simpllr 772	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝑥 ∈ 𝑃)
21		simplr 765	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝑦 ∈ 𝑃)
22		simprll 775	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝑥(𝐾‘𝐴)𝐷)
23		simprrl 777	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝑦(𝐾‘𝐴)𝐷)
24		simprlr 776	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → (𝐴 − 𝑥) = (𝐵 − 𝐶))
25		simprrr 778	. . . . . 6 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → (𝐴 − 𝑦) = (𝐵 − 𝐶))
26	1, 2, 3, 13, 14, 15, 16, 17, 9, 18, 19, 20, 21, 22, 23, 24, 25	hlcgreulem 28135	. . . . 5 ⊢ ((((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) ∧ ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶)))) → 𝑥 = 𝑦)
27	26	ex 411	. . . 4 ⊢ (((𝜑 ∧ 𝑥 ∈ 𝑃) ∧ 𝑦 ∈ 𝑃) → (((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶))) → 𝑥 = 𝑦))
28	27	ralrimiva 3144	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → ∀𝑦 ∈ 𝑃 (((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶))) → 𝑥 = 𝑦))
29	28	ralrimiva 3144	. 2 ⊢ (𝜑 → ∀𝑥 ∈ 𝑃 ∀𝑦 ∈ 𝑃 (((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶))) → 𝑥 = 𝑦))
30		breq1 5150	. . . 4 ⊢ (𝑥 = 𝑦 → (𝑥(𝐾‘𝐴)𝐷 ↔ 𝑦(𝐾‘𝐴)𝐷))
31		oveq2 7419	. . . . 5 ⊢ (𝑥 = 𝑦 → (𝐴 − 𝑥) = (𝐴 − 𝑦))
32	31	eqeq1d 2732	. . . 4 ⊢ (𝑥 = 𝑦 → ((𝐴 − 𝑥) = (𝐵 − 𝐶) ↔ (𝐴 − 𝑦) = (𝐵 − 𝐶)))
33	30, 32	anbi12d 629	. . 3 ⊢ (𝑥 = 𝑦 → ((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ↔ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶))))
34	33	reu4 3726	. 2 ⊢ (∃!𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ↔ (∃𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ ∀𝑥 ∈ 𝑃 ∀𝑦 ∈ 𝑃 (((𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)) ∧ (𝑦(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑦) = (𝐵 − 𝐶))) → 𝑥 = 𝑦)))
35	12, 29, 34	sylanbrc 581	1 ⊢ (𝜑 → ∃!𝑥 ∈ 𝑃 (𝑥(𝐾‘𝐴)𝐷 ∧ (𝐴 − 𝑥) = (𝐵 − 𝐶)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1539 ∈ wcel 2104 ≠ wne 2938 ∀wral 3059 ∃wrex 3068 ∃!wreu 3372 class class class wbr 5147 ‘cfv 6542 (class class class)co 7411 Basecbs 17148 distcds 17210 TarskiGcstrkg 27945 Itvcitv 27951 hlGchlg 28118

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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-oadd 8472 df-er 8705 df-pm 8825 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-dju 9898 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-n0 12477 df-xnn0 12549 df-z 12563 df-uz 12827 df-fz 13489 df-fzo 13632 df-hash 14295 df-word 14469 df-concat 14525 df-s1 14550 df-s2 14803 df-s3 14804 df-trkgc 27966 df-trkgb 27967 df-trkgcb 27968 df-trkg 27971 df-cgrg 28029 df-hlg 28119

This theorem is referenced by: (None)

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