Users' Mathboxes Mathbox for Thierry Arnoux < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >   Mathboxes  >  btwnlng13 Structured version   Visualization version   GIF version

Theorem btwnlng13 35299
Description: If 𝑍 is between 𝑋 and 𝑌, or 𝑌 is between 𝑋 and 𝑍, then 𝑍 lies on the line 𝑋𝑌. (Contributed by SS, 4-Jun-2026.)
Hypotheses
Ref Expression
btwnlng13.p 𝑃 = (Base‘𝐺)
btwnlng13.i 𝐼 = (Itv‘𝐺)
btwnlng13.l 𝐿 = (LineG‘𝐺)
btwnlng13.g (𝜑 → 𝐺 ∈ TarskiG)
btwnlng13.x (𝜑 → 𝑋 ∈ 𝑃)
btwnlng13.y (𝜑 → 𝑌 ∈ 𝑃)
btwnlng13.z (𝜑 → 𝑍 ∈ 𝑃)
btwnlng13.d (𝜑 → 𝑋 ≠ 𝑌)
btwnlng13.1 (𝜑 → (𝑍 ∈ (𝑋𝐼𝑌) ∨ 𝑌 ∈ (𝑋𝐼𝑍)))
Assertion
Ref Expression
btwnlng13 (𝜑 → 𝑍 ∈ (𝑋𝐿𝑌))

Proof of Theorem btwnlng13
StepHypRef Expression
1 btwnlng13.p . . 3 𝑃 = (Base‘𝐺)
2 btwnlng13.i . . 3 𝐼 = (Itv‘𝐺)
3 btwnlng13.l . . 3 𝐿 = (LineG‘𝐺)
4 btwnlng13.g . . . 4 (𝜑 → 𝐺 ∈ TarskiG)
54adantr 486 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝐺 ∈ TarskiG)
6 btwnlng13.x . . . 4 (𝜑 → 𝑋 ∈ 𝑃)
76adantr 486 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑋 ∈ 𝑃)
8 btwnlng13.y . . . 4 (𝜑 → 𝑌 ∈ 𝑃)
98adantr 486 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑌 ∈ 𝑃)
10 btwnlng13.z . . . 4 (𝜑 → 𝑍 ∈ 𝑃)
1110adantr 486 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑍 ∈ 𝑃)
12 btwnlng13.d . . . 4 (𝜑 → 𝑋 ≠ 𝑌)
1312adantr 486 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑋 ≠ 𝑌)
14 simpr 490 . . 3 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑍 ∈ (𝑋𝐼𝑌))
151, 2, 3, 5, 7, 9, 11, 13, 14btwnlng1 29087 . 2 ((𝜑 ∧ 𝑍 ∈ (𝑋𝐼𝑌)) → 𝑍 ∈ (𝑋𝐿𝑌))
164adantr 486 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝐺 ∈ TarskiG)
176adantr 486 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑋 ∈ 𝑃)
188adantr 486 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑌 ∈ 𝑃)
1910adantr 486 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑍 ∈ 𝑃)
2012adantr 486 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑋 ≠ 𝑌)
21 simpr 490 . . 3 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑌 ∈ (𝑋𝐼𝑍))
221, 2, 3, 16, 17, 18, 19, 20, 21btwnlng3 29089 . 2 ((𝜑 ∧ 𝑌 ∈ (𝑋𝐼𝑍)) → 𝑍 ∈ (𝑋𝐿𝑌))
23 btwnlng13.1 . 2 (𝜑 → (𝑍 ∈ (𝑋𝐼𝑌) ∨ 𝑌 ∈ (𝑋𝐼𝑍)))
2415, 22, 23mpjaodan 973 1 (𝜑 → 𝑍 ∈ (𝑋𝐿𝑌))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   ∨ wo 861   = wceq 1569   ∈ wcel 2144   ≠ wne 2955  ‘cfv 6538  (class class class)co 7420  Basecbs 17387  TarskiGcstrkg 28889  Itvcitv 28895  LineGclng 28896
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-sep 5248  ax-nul 5259  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  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-rab 3413  df-v 3452  df-sbc 3739  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-op 4590  df-uni 4867  df-br 5103  df-opab 5167  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-iota 6494  df-fun 6540  df-fv 6546  df-ov 7423  df-oprab 7424  df-mpo 7425  df-trkg 28915
This theorem is used by:  morleylemrneab  35300
  Copyright terms: Public domain W3C validator