hlne2 - Metamath Proof Explorer

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Theorem hlne2 28473

Description: The half-line relation implies inequality. (Contributed by Thierry Arnoux, 22-Feb-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)
ishlg.g	⊢ (𝜑 → 𝐺 ∈ 𝑉)
hlcomd.1	⊢ (𝜑 → 𝐴(𝐾‘𝐶)𝐵)

**Assertion**
Ref	Expression
hlne2	⊢ (𝜑 → 𝐵 ≠ 𝐶)

**Proof of Theorem hlne2**
Step	Hyp	Ref	Expression
1		hlcomd.1	. . 3 ⊢ (𝜑 → 𝐴(𝐾‘𝐶)𝐵)
2		ishlg.p	. . . 4 ⊢ 𝑃 = (Base‘𝐺)
3		ishlg.i	. . . 4 ⊢ 𝐼 = (Itv‘𝐺)
4		ishlg.k	. . . 4 ⊢ 𝐾 = (hlG‘𝐺)
5		ishlg.a	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
6		ishlg.b	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
7		ishlg.c	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
8		ishlg.g	. . . 4 ⊢ (𝜑 → 𝐺 ∈ 𝑉)
9	2, 3, 4, 5, 6, 7, 8	ishlg 28469	. . 3 ⊢ (𝜑 → (𝐴(𝐾‘𝐶)𝐵 ↔ (𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶 ∧ (𝐴 ∈ (𝐶𝐼𝐵) ∨ 𝐵 ∈ (𝐶𝐼𝐴)))))
10	1, 9	mpbid 231	. 2 ⊢ (𝜑 → (𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶 ∧ (𝐴 ∈ (𝐶𝐼𝐵) ∨ 𝐵 ∈ (𝐶𝐼𝐴))))
11	10	simp2d 1140	1 ⊢ (𝜑 → 𝐵 ≠ 𝐶)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∨ wo 845 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2930 class class class wbr 5148 ‘cfv 6547 (class class class)co 7417 Basecbs 17180 Itvcitv 28300 hlGchlg 28467

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5364 ax-pr 5428 ax-un 7739

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-ral 3052 df-rex 3061 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3775 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5575 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-iota 6499 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-ov 7420 df-hlg 28468

This theorem is referenced by: hltr 28477 hlperpnel 28592 opphllem4 28617 opphllem5 28618 opphl 28621 hlpasch 28623 colhp 28637 iscgra1 28677 cgrane3 28681 cgrane4 28682 cgracgr 28685 inaghl 28712

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