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Theorem btwnhl2 28591
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 (𝜑𝐴𝑃)
ishlg.b (𝜑𝐵𝑃)
ishlg.c (𝜑𝐶𝑃)
hlln.1 (𝜑𝐺 ∈ TarskiG)
hltr.d (𝜑𝐷𝑃)
btwnhl1.1 (𝜑𝐶 ∈ (𝐴𝐼𝐵))
btwnhl1.2 (𝜑𝐴𝐵)
btwnhl2.3 (𝜑𝐶𝐵)
Assertion
Ref Expression
btwnhl2 (𝜑𝐶(𝐾𝐵)𝐴)

Proof of Theorem btwnhl2
StepHypRef Expression
1 btwnhl2.3 . 2 (𝜑𝐶𝐵)
2 btwnhl1.2 . 2 (𝜑𝐴𝐵)
3 ishlg.p . . . 4 𝑃 = (Base‘𝐺)
4 eqid 2731 . . . 4 (dist‘𝐺) = (dist‘𝐺)
5 ishlg.i . . . 4 𝐼 = (Itv‘𝐺)
6 hlln.1 . . . 4 (𝜑𝐺 ∈ TarskiG)
7 ishlg.a . . . 4 (𝜑𝐴𝑃)
8 ishlg.c . . . 4 (𝜑𝐶𝑃)
9 ishlg.b . . . 4 (𝜑𝐵𝑃)
10 btwnhl1.1 . . . 4 (𝜑𝐶 ∈ (𝐴𝐼𝐵))
113, 4, 5, 6, 7, 8, 9, 10tgbtwncom 28466 . . 3 (𝜑𝐶 ∈ (𝐵𝐼𝐴))
1211orcd 873 . 2 (𝜑 → (𝐶 ∈ (𝐵𝐼𝐴) ∨ 𝐴 ∈ (𝐵𝐼𝐶)))
13 ishlg.k . . 3 𝐾 = (hlG‘𝐺)
143, 5, 13, 8, 7, 9, 6ishlg 28580 . 2 (𝜑 → (𝐶(𝐾𝐵)𝐴 ↔ (𝐶𝐵𝐴𝐵 ∧ (𝐶 ∈ (𝐵𝐼𝐴) ∨ 𝐴 ∈ (𝐵𝐼𝐶)))))
151, 2, 12, 14mpbir3and 1343 1 (𝜑𝐶(𝐾𝐵)𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wo 847   = wceq 1541  wcel 2111  wne 2928   class class class wbr 5089  cfv 6481  (class class class)co 7346  Basecbs 17120  distcds 17170  TarskiGcstrkg 28405  Itvcitv 28411  hlGchlg 28578
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5215  ax-sep 5232  ax-nul 5242  ax-pow 5301  ax-pr 5368  ax-un 7668
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-ral 3048  df-rex 3057  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4281  df-if 4473  df-pw 4549  df-sn 4574  df-pr 4576  df-op 4580  df-uni 4857  df-iun 4941  df-br 5090  df-opab 5152  df-mpt 5171  df-id 5509  df-xp 5620  df-rel 5621  df-cnv 5622  df-co 5623  df-dm 5624  df-rn 5625  df-res 5626  df-ima 5627  df-iota 6437  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-fv 6489  df-ov 7349  df-trkgc 28426  df-trkgb 28427  df-trkgcb 28428  df-trkg 28431  df-hlg 28579
This theorem is referenced by:  hlpasch  28734
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