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Theorem tgextahpl 33069
Description: The generic open half-plane core. From a point 𝑋 between 𝐴 and 𝐷 that is on the half-line from 𝐶 through 𝑊, with 𝑊 off line 𝐴𝐶, both 𝑋 and 𝐷 and both 𝑋 and 𝑊 land on the same side of line 𝐴𝐶 (two colhp 29248 applications), and hpgcom 29245 / hpgtr 29246 compose them. 𝑋 ≠ 𝐶 is read off .xk by hlne1 29071, so no 𝑥 = 𝐶 case reaches here. The $d s are on proof dummies only -- colhp 29248's class abstraction needs its own bound variables -- so nothing propagates to callers. (Contributed by JAG, 12-Aug-2026.)
Hypotheses
Ref Expression
tgextahpl.p 𝑃 = (Base‘𝐺)
tgextahpl.m − = (dist‘𝐺)
tgextahpl.i 𝐼 = (Itv‘𝐺)
tgextahpl.l 𝐿 = (LineG‘𝐺)
tgextahpl.k 𝐾 = (hlG‘𝐺)
tgextahpl.g (𝜑 → 𝐺 ∈ TarskiG)
tgextahpl.a (𝜑 → 𝐴 ∈ 𝑃)
tgextahpl.c (𝜑 → 𝐶 ∈ 𝑃)
tgextahpl.d (𝜑 → 𝐷 ∈ 𝑃)
tgextahpl.w (𝜑 → 𝑊 ∈ 𝑃)
tgextahpl.x (𝜑 → 𝑋 ∈ 𝑃)
tgextahpl.ncd (𝜑 → ¬ (𝐴 ∈ (𝐶𝐿𝐷) ∨ 𝐶 = 𝐷))
tgextahpl.nw (𝜑 → ¬ 𝑊 ∈ (𝐴𝐿𝐶))
tgextahpl.xad (𝜑 → 𝑋 ∈ (𝐴𝐼𝐷))
tgextahpl.xk (𝜑 → 𝑋(𝐾‘𝐶)𝑊)
Assertion
Ref Expression
tgextahpl (𝜑 → 𝑊((hpG‘𝐺)‘(𝐴𝐿𝐶))𝐷)

Proof of Theorem tgextahpl
Dummy variables 𝑎 𝑏 𝑡 𝑣 𝑢 𝑤 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 tgextahpl.p . 2 𝑃 = (Base‘𝐺)
2 tgextahpl.i . 2 𝐼 = (Itv‘𝐺)
3 tgextahpl.l . 2 𝐿 = (LineG‘𝐺)
4 tgextahpl.g . 2 (𝜑 → 𝐺 ∈ TarskiG)
5 tgextahpl.a . . 3 (𝜑 → 𝐴 ∈ 𝑃)
6 tgextahpl.c . . 3 (𝜑 → 𝐶 ∈ 𝑃)
7 tgextahpl.d . . . 4 (𝜑 → 𝐷 ∈ 𝑃)
8 tgextahpl.ncd . . . 4 (𝜑 → ¬ (𝐴 ∈ (𝐶𝐿𝐷) ∨ 𝐶 = 𝐷))
91, 2, 3, 4, 5, 6, 7, 8ncolne1 29093 . . 3 (𝜑 → 𝐴 ≠ 𝐶)
101, 2, 3, 4, 5, 6, 9tgelrnln 29098 . 2 (𝜑 → (𝐴𝐿𝐶) ∈ ran 𝐿)
11 tgextahpl.w . 2 (𝜑 → 𝑊 ∈ 𝑃)
12 simpl 488 . . . . . 6 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → 𝑢 = 𝑎)
1312eleq1d 2845 . . . . 5 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → (𝑢 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ↔ 𝑎 ∈ (𝑃 ∖ (𝐴𝐿𝐶))))
14 simpr 490 . . . . . 6 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → 𝑣 = 𝑏)
1514eleq1d 2845 . . . . 5 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → (𝑣 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ↔ 𝑏 ∈ (𝑃 ∖ (𝐴𝐿𝐶))))
1613, 15anbi12d 644 . . . 4 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → ((𝑢 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑣 ∈ (𝑃 ∖ (𝐴𝐿𝐶))) ↔ (𝑎 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑏 ∈ (𝑃 ∖ (𝐴𝐿𝐶)))))
17 simpr 490 . . . . . 6 (((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) ∧ 𝑤 = 𝑡) → 𝑤 = 𝑡)
18 simpll 779 . . . . . . 7 (((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) ∧ 𝑤 = 𝑡) → 𝑢 = 𝑎)
19 simplr 781 . . . . . . 7 (((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) ∧ 𝑤 = 𝑡) → 𝑣 = 𝑏)
2018, 19oveq12d 7438 . . . . . 6 (((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) ∧ 𝑤 = 𝑡) → (𝑢𝐼𝑣) = (𝑎𝐼𝑏))
2117, 20eleq12d 2854 . . . . 5 (((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) ∧ 𝑤 = 𝑡) → (𝑤 ∈ (𝑢𝐼𝑣) ↔ 𝑡 ∈ (𝑎𝐼𝑏)))
2221cbvrexdva 3243 . . . 4 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → (∃𝑤 ∈ (𝐴𝐿𝐶)𝑤 ∈ (𝑢𝐼𝑣) ↔ ∃𝑡 ∈ (𝐴𝐿𝐶)𝑡 ∈ (𝑎𝐼𝑏)))
2316, 22anbi12d 644 . . 3 ((𝑢 = 𝑎 ∧ 𝑣 = 𝑏) → (((𝑢 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑣 ∈ (𝑃 ∖ (𝐴𝐿𝐶))) ∧ ∃𝑤 ∈ (𝐴𝐿𝐶)𝑤 ∈ (𝑢𝐼𝑣)) ↔ ((𝑎 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑏 ∈ (𝑃 ∖ (𝐴𝐿𝐶))) ∧ ∃𝑡 ∈ (𝐴𝐿𝐶)𝑡 ∈ (𝑎𝐼𝑏))))
2423cbvopabv 5177 . 2 {⟨𝑢, 𝑣⟩ ∣ ((𝑢 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑣 ∈ (𝑃 ∖ (𝐴𝐿𝐶))) ∧ ∃𝑤 ∈ (𝐴𝐿𝐶)𝑤 ∈ (𝑢𝐼𝑣))} = {⟨𝑎, 𝑏⟩ ∣ ((𝑎 ∈ (𝑃 ∖ (𝐴𝐿𝐶)) ∧ 𝑏 ∈ (𝑃 ∖ (𝐴𝐿𝐶))) ∧ ∃𝑡 ∈ (𝐴𝐿𝐶)𝑡 ∈ (𝑎𝐼𝑏))}
25 tgextahpl.x . 2 (𝜑 → 𝑋 ∈ 𝑃)
26 tgextahpl.xk . . . . 5 (𝜑 → 𝑋(𝐾‘𝐶)𝑊)
27 tgextahpl.nw . . . . . 6 (𝜑 → ¬ 𝑊 ∈ (𝐴𝐿𝐶))
28 tgextahpl.k . . . . . . . 8 𝐾 = (hlG‘𝐺)
2911adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑊 ∈ 𝑃)
3025adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑋 ∈ 𝑃)
316adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐶 ∈ 𝑃)
324adantr 486 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐺 ∈ TarskiG)
3326adantr 486 . . . . . . . . 9 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑋(𝐾‘𝐶)𝑊)
341, 2, 28, 30, 29, 31, 32, 33hlcomd 29070 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑊(𝐾‘𝐶)𝑋)
351, 2, 28, 29, 30, 31, 32, 3, 34hlln 29073 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑊 ∈ (𝑋𝐿𝐶))
365adantr 486 . . . . . . . . 9 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐴 ∈ 𝑃)
379adantr 486 . . . . . . . . 9 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐴 ≠ 𝐶)
381, 2, 3, 32, 36, 31, 37tglinecom 29103 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → (𝐴𝐿𝐶) = (𝐶𝐿𝐴))
399necomd 3010 . . . . . . . . . . 11 (𝜑 → 𝐶 ≠ 𝐴)
4039adantr 486 . . . . . . . . . 10 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐶 ≠ 𝐴)
411, 2, 28, 25, 11, 6, 4, 26hlne1 29071 . . . . . . . . . . 11 (𝜑 → 𝑋 ≠ 𝐶)
4241adantr 486 . . . . . . . . . 10 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑋 ≠ 𝐶)
43 simpr 490 . . . . . . . . . . 11 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑋 ∈ (𝐴𝐿𝐶))
4443, 38eleqtrd 2862 . . . . . . . . . 10 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑋 ∈ (𝐶𝐿𝐴))
451, 2, 3, 32, 31, 36, 40, 30, 42, 44tglineelsb2 29100 . . . . . . . . 9 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → (𝐶𝐿𝐴) = (𝐶𝐿𝑋))
4641necomd 3010 . . . . . . . . . . 11 (𝜑 → 𝐶 ≠ 𝑋)
4746adantr 486 . . . . . . . . . 10 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐶 ≠ 𝑋)
481, 2, 3, 32, 31, 30, 47tglinecom 29103 . . . . . . . . 9 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → (𝐶𝐿𝑋) = (𝑋𝐿𝐶))
4945, 48eqtrd 2795 . . . . . . . 8 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → (𝐶𝐿𝐴) = (𝑋𝐿𝐶))
5038, 49eqtrd 2795 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → (𝐴𝐿𝐶) = (𝑋𝐿𝐶))
5135, 50eleqtrrd 2863 . . . . . 6 ((𝜑 ∧ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝑊 ∈ (𝐴𝐿𝐶))
5227, 51mtand 828 . . . . 5 (𝜑 → ¬ 𝑋 ∈ (𝐴𝐿𝐶))
5326, 52jca 521 . . . 4 (𝜑 → (𝑋(𝐾‘𝐶)𝑊 ∧ ¬ 𝑋 ∈ (𝐴𝐿𝐶)))
541, 2, 3, 4, 5, 6, 9tglinerflx2 29102 . . . . 5 (𝜑 → 𝐶 ∈ (𝐴𝐿𝐶))
554adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → 𝐺 ∈ TarskiG)
5625adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → 𝑋 ∈ 𝑃)
5711adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → 𝑊 ∈ 𝑃)
586adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → 𝐶 ∈ 𝑃)
59 simpr 490 . . . . . . 7 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → 𝑋 ∈ (𝐶𝐼𝑊))
601, 3, 2, 55, 56, 57, 58, 59btwncolg2 29019 . . . . . 6 ((𝜑 ∧ 𝑋 ∈ (𝐶𝐼𝑊)) → (𝐶 ∈ (𝑋𝐿𝑊) ∨ 𝑋 = 𝑊))
614adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝐺 ∈ TarskiG)
6225adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝑋 ∈ 𝑃)
6311adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝑊 ∈ 𝑃)
646adantr 486 . . . . . . 7 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝐶 ∈ 𝑃)
65 tgextahpl.m . . . . . . . 8 − = (dist‘𝐺)
66 simpr 490 . . . . . . . 8 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝑊 ∈ (𝐶𝐼𝑋))
671, 65, 2, 61, 64, 63, 62, 66tgbtwncom 28951 . . . . . . 7 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → 𝑊 ∈ (𝑋𝐼𝐶))
681, 3, 2, 61, 62, 63, 64, 67btwncolg3 29020 . . . . . 6 ((𝜑 ∧ 𝑊 ∈ (𝐶𝐼𝑋)) → (𝐶 ∈ (𝑋𝐿𝑊) ∨ 𝑋 = 𝑊))
691, 2, 28, 25, 11, 6, 4ishlg 29068 . . . . . . . 8 (𝜑 → (𝑋(𝐾‘𝐶)𝑊 ↔ (𝑋 ≠ 𝐶 ∧ 𝑊 ≠ 𝐶 ∧ (𝑋 ∈ (𝐶𝐼𝑊) ∨ 𝑊 ∈ (𝐶𝐼𝑋)))))
7026, 69mpbid 235 . . . . . . 7 (𝜑 → (𝑋 ≠ 𝐶 ∧ 𝑊 ≠ 𝐶 ∧ (𝑋 ∈ (𝐶𝐼𝑊) ∨ 𝑊 ∈ (𝐶𝐼𝑋))))
7170simp3d 1162 . . . . . 6 (𝜑 → (𝑋 ∈ (𝐶𝐼𝑊) ∨ 𝑊 ∈ (𝐶𝐼𝑋)))
7260, 68, 71mpjaodan 973 . . . . 5 (𝜑 → (𝐶 ∈ (𝑋𝐿𝑊) ∨ 𝑋 = 𝑊))
731, 2, 3, 4, 10, 25, 24, 11, 54, 72, 28colhp 29248 . . . 4 (𝜑 → (𝑋((hpG‘𝐺)‘(𝐴𝐿𝐶))𝑊 ↔ (𝑋(𝐾‘𝐶)𝑊 ∧ ¬ 𝑋 ∈ (𝐴𝐿𝐶))))
7453, 73mpbird 260 . . 3 (𝜑 → 𝑋((hpG‘𝐺)‘(𝐴𝐿𝐶))𝑊)
751, 2, 3, 4, 10, 25, 24, 11, 74hpgcom 29245 . 2 (𝜑 → 𝑊((hpG‘𝐺)‘(𝐴𝐿𝐶))𝑋)
76 tgextahpl.xad . . . . 5 (𝜑 → 𝑋 ∈ (𝐴𝐼𝐷))
771, 2, 3, 4, 5, 6, 7, 8ncolne2 29094 . . . . 5 (𝜑 → 𝐴 ≠ 𝐷)
781, 2, 3, 4, 5, 6, 9tglinerflx1 29101 . . . . . . 7 (𝜑 → 𝐴 ∈ (𝐴𝐿𝐶))
79 nelne2 3053 . . . . . . 7 ((𝐴 ∈ (𝐴𝐿𝐶) ∧ ¬ 𝑋 ∈ (𝐴𝐿𝐶)) → 𝐴 ≠ 𝑋)
8078, 52, 79syl2anc 596 . . . . . 6 (𝜑 → 𝐴 ≠ 𝑋)
8180necomd 3010 . . . . 5 (𝜑 → 𝑋 ≠ 𝐴)
821, 2, 28, 5, 7, 25, 4, 6, 76, 77, 81btwnhl1 29078 . . . 4 (𝜑 → 𝑋(𝐾‘𝐴)𝐷)
8382, 52jca 521 . . 3 (𝜑 → (𝑋(𝐾‘𝐴)𝐷 ∧ ¬ 𝑋 ∈ (𝐴𝐿𝐶)))
841, 3, 2, 4, 25, 7, 5, 76btwncolg2 29019 . . . 4 (𝜑 → (𝐴 ∈ (𝑋𝐿𝐷) ∨ 𝑋 = 𝐷))
851, 2, 3, 4, 10, 25, 24, 7, 78, 84, 28colhp 29248 . . 3 (𝜑 → (𝑋((hpG‘𝐺)‘(𝐴𝐿𝐶))𝐷 ↔ (𝑋(𝐾‘𝐴)𝐷 ∧ ¬ 𝑋 ∈ (𝐴𝐿𝐶))))
8683, 85mpbird 260 . 2 (𝜑 → 𝑋((hpG‘𝐺)‘(𝐴𝐿𝐶))𝐷)
871, 2, 3, 4, 10, 11, 24, 25, 75, 7, 86hpgtr 29246 1 (𝜑 → 𝑊((hpG‘𝐺)‘(𝐴𝐿𝐶))𝐷)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ∧ wa 401   ∨ wo 861   ∧ w3a 1103   = wceq 1569   ∈ wcel 2144   ≠ wne 2955  ∃wrex 3086   ∖ cdif 4045   class class class wbr 5102  {copab 5166  ‘cfv 6538  (class class class)co 7420  Basecbs 17387  distcds 17437  TarskiGcstrkg 28889  Itvcitv 28895  LineGclng 28896  hlGchlg 29063  hpGchpg 29235
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-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390  ax-un 7751  ax-cnex 11256  ax-resscn 11257  ax-1cn 11258  ax-icn 11259  ax-addcl 11260  ax-addrcl 11261  ax-mulcl 11262  ax-mulrcl 11263  ax-mulcom 11264  ax-addass 11265  ax-mulass 11266  ax-distr 11267  ax-i2m1 11268  ax-1ne0 11269  ax-1rid 11270  ax-rnegex 11271  ax-rrecex 11272  ax-cnre 11273  ax-pre-lttri 11274  ax-pre-lttrn 11275  ax-pre-ltadd 11276  ax-pre-mulgt0 11277
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-nel 3062  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-pss 4014  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-tp 4588  df-op 4590  df-uni 4867  df-int 4907  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-tr 5212  df-id 5545  df-eprel 5550  df-po 5558  df-so 5559  df-fr 5603  df-we 5605  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-riota 7377  df-ov 7423  df-oprab 7424  df-mpo 7425  df-om 7878  df-1st 8001  df-2nd 8002  df-frecs 8299  df-wrecs 8330  df-recs 8379  df-rdg 8418  df-1o 8476  df-oadd 8480  df-er 8717  df-map 8849  df-pm 8850  df-en 8974  df-dom 8975  df-sdom 8976  df-fin 8977  df-dju 9982  df-card 10020  df-pnf 11345  df-mnf 11346  df-xr 11347  df-ltxr 11348  df-le 11349  df-sub 11543  df-neg 11544  df-nn 12336  df-2 12405  df-3 12406  df-n0 12607  df-xnn0 12680  df-z 12694  df-uz 12966  df-fz 13640  df-fzo 13789  df-hash 14475  df-word 14659  df-concat 14716  df-s1 14743  df-s2 14999  df-s3 15000  df-trkgc 28910  df-trkgb 28911  df-trkgcb 28912  df-trkgld 28914  df-trkg 28915  df-cgrg 28974  df-leg 29046  df-hlg 29064  df-mir 29125  df-rag 29169  df-perpg 29171  df-hpg 29236
This theorem is used by:  tgextahp  33073
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