btwnhl1 - Metamath Proof Explorer

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Theorem btwnhl1 29011

Description: Deduce half-line from betweenness. (Contributed by Thierry Arnoux, 4-Mar-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)
btwnhl1.1	⊢ (𝜑 → 𝐶 ∈ (𝐴𝐼𝐵))
btwnhl1.2	⊢ (𝜑 → 𝐴 ≠ 𝐵)
btwnhl1.3	⊢ (𝜑 → 𝐶 ≠ 𝐴)

**Assertion**
Ref	Expression
btwnhl1	⊢ (𝜑 → 𝐶(𝐾‘𝐴)𝐵)

**Proof of Theorem btwnhl1**
Step	Hyp	Ref	Expression
1		btwnhl1.3	. 2 ⊢ (𝜑 → 𝐶 ≠ 𝐴)
2		btwnhl1.2	. . 3 ⊢ (𝜑 → 𝐴 ≠ 𝐵)
3	2	necomd 3010	. 2 ⊢ (𝜑 → 𝐵 ≠ 𝐴)
4		btwnhl1.1	. . 3 ⊢ (𝜑 → 𝐶 ∈ (𝐴𝐼𝐵))
5	4	orcd 887	. 2 ⊢ (𝜑 → (𝐶 ∈ (𝐴𝐼𝐵) ∨ 𝐵 ∈ (𝐴𝐼𝐶)))
6		ishlg.p	. . 3 ⊢ 𝑃 = (Base‘𝐺)
7		ishlg.i	. . 3 ⊢ 𝐼 = (Itv‘𝐺)
8		ishlg.k	. . 3 ⊢ 𝐾 = (hlG‘𝐺)
9		ishlg.c	. . 3 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
10		ishlg.b	. . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
11		ishlg.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
12		hlln.1	. . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
13	6, 7, 8, 9, 10, 11, 12	ishlg 29001	. 2 ⊢ (𝜑 → (𝐶(𝐾‘𝐴)𝐵 ↔ (𝐶 ≠ 𝐴 ∧ 𝐵 ≠ 𝐴 ∧ (𝐶 ∈ (𝐴𝐼𝐵) ∨ 𝐵 ∈ (𝐴𝐼𝐶)))))
14	1, 3, 5, 13	mpbir3and 1361	1 ⊢ (𝜑 → 𝐶(𝐾‘𝐴)𝐵)

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ∨ wo 861 = wceq 1570 ∈ wcel 2145 ≠ wne 2955 class class class wbr 5102 ‘cfv 6527 (class class class)co 7408 Basecbs 17348 TarskiGcstrkg 28822 Itvcitv 28828 hlGchlg 28996

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-rep 5231 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7734

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5542 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-iota 6483 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-ov 7411 df-hlg 28997

This theorem is used by: outpasch 29166 hlpasch 29167 lnopp2hpgb 29174 dfcgra2 29271 cgranbtwn 35232

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