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Theorem btwnhl2 28699
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 2737 . . . 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 28574 . . 3 (𝜑𝐶 ∈ (𝐵𝐼𝐴))
1211orcd 874 . 2 (𝜑 → (𝐶 ∈ (𝐵𝐼𝐴) ∨ 𝐴 ∈ (𝐵𝐼𝐶)))
13 ishlg.k . . 3 𝐾 = (hlG‘𝐺)
143, 5, 13, 8, 7, 9, 6ishlg 28688 . 2 (𝜑 → (𝐶(𝐾𝐵)𝐴 ↔ (𝐶𝐵𝐴𝐵 ∧ (𝐶 ∈ (𝐵𝐼𝐴) ∨ 𝐴 ∈ (𝐵𝐼𝐶)))))
151, 2, 12, 14mpbir3and 1344 1 (𝜑𝐶(𝐾𝐵)𝐴)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wo 848   = wceq 1542  wcel 2114  wne 2933   class class class wbr 5086  cfv 6494  (class class class)co 7362  Basecbs 17174  distcds 17224  TarskiGcstrkg 28513  Itvcitv 28519  hlGchlg 28686
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5213  ax-sep 5232  ax-nul 5242  ax-pow 5304  ax-pr 5372  ax-un 7684
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-reu 3344  df-rab 3391  df-v 3432  df-sbc 3730  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-pw 4544  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-iun 4936  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5521  df-xp 5632  df-rel 5633  df-cnv 5634  df-co 5635  df-dm 5636  df-rn 5637  df-res 5638  df-ima 5639  df-iota 6450  df-fun 6496  df-fn 6497  df-f 6498  df-f1 6499  df-fo 6500  df-f1o 6501  df-fv 6502  df-ov 7365  df-trkgc 28534  df-trkgb 28535  df-trkgcb 28536  df-trkg 28539  df-hlg 28687
This theorem is referenced by:  hlpasch  28842
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