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Theorem istrkgc 27705
Description: Property of being a Tarski geometry - congruence part. (Contributed by Thierry Arnoux, 14-Mar-2019.)
Hypotheses
Ref Expression
istrkg.p 𝑃 = (Baseβ€˜πΊ)
istrkg.d βˆ’ = (distβ€˜πΊ)
istrkg.i 𝐼 = (Itvβ€˜πΊ)
Assertion
Ref Expression
istrkgc (𝐺 ∈ TarskiGC ↔ (𝐺 ∈ V ∧ (βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯) ∧ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦))))
Distinct variable groups:   π‘₯,𝑦,𝑧,𝐼   π‘₯,𝑃,𝑦,𝑧   π‘₯, βˆ’ ,𝑦,𝑧
Allowed substitution hints:   𝐺(π‘₯,𝑦,𝑧)

Proof of Theorem istrkgc
Dummy variables 𝑓 𝑑 𝑝 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 istrkg.p . . 3 𝑃 = (Baseβ€˜πΊ)
2 istrkg.d . . 3 βˆ’ = (distβ€˜πΊ)
3 simpl 484 . . . . 5 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ 𝑝 = 𝑃)
4 simpr 486 . . . . . . . 8 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ 𝑑 = βˆ’ )
54oveqd 7426 . . . . . . 7 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (π‘₯𝑑𝑦) = (π‘₯ βˆ’ 𝑦))
64oveqd 7426 . . . . . . 7 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (𝑦𝑑π‘₯) = (𝑦 βˆ’ π‘₯))
75, 6eqeq12d 2749 . . . . . 6 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ ((π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ↔ (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯)))
83, 7raleqbidv 3343 . . . . 5 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (βˆ€π‘¦ ∈ 𝑝 (π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ↔ βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯)))
93, 8raleqbidv 3343 . . . 4 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 (π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ↔ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯)))
104oveqd 7426 . . . . . . . . 9 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (𝑧𝑑𝑧) = (𝑧 βˆ’ 𝑧))
115, 10eqeq12d 2749 . . . . . . . 8 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) ↔ (π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧)))
1211imbi1d 342 . . . . . . 7 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦) ↔ ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦)))
133, 12raleqbidv 3343 . . . . . 6 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦) ↔ βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦)))
143, 13raleqbidv 3343 . . . . 5 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (βˆ€π‘¦ ∈ 𝑝 βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦) ↔ βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦)))
153, 14raleqbidv 3343 . . . 4 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ (βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦) ↔ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦)))
169, 15anbi12d 632 . . 3 ((𝑝 = 𝑃 ∧ 𝑑 = βˆ’ ) β†’ ((βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 (π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ∧ βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦)) ↔ (βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯) ∧ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦))))
171, 2, 16sbcie2s 17094 . 2 (𝑓 = 𝐺 β†’ ([(Baseβ€˜π‘“) / 𝑝][(distβ€˜π‘“) / 𝑑](βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 (π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ∧ βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦)) ↔ (βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯) ∧ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦))))
18 df-trkgc 27699 . 2 TarskiGC = {𝑓 ∣ [(Baseβ€˜π‘“) / 𝑝][(distβ€˜π‘“) / 𝑑](βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 (π‘₯𝑑𝑦) = (𝑦𝑑π‘₯) ∧ βˆ€π‘₯ ∈ 𝑝 βˆ€π‘¦ ∈ 𝑝 βˆ€π‘§ ∈ 𝑝 ((π‘₯𝑑𝑦) = (𝑧𝑑𝑧) β†’ π‘₯ = 𝑦))}
1917, 18elab4g 3674 1 (𝐺 ∈ TarskiGC ↔ (𝐺 ∈ V ∧ (βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 (π‘₯ βˆ’ 𝑦) = (𝑦 βˆ’ π‘₯) ∧ βˆ€π‘₯ ∈ 𝑃 βˆ€π‘¦ ∈ 𝑃 βˆ€π‘§ ∈ 𝑃 ((π‘₯ βˆ’ 𝑦) = (𝑧 βˆ’ 𝑧) β†’ π‘₯ = 𝑦))))
Colors of variables: wff setvar class
Syntax hints:   β†’ wi 4   ↔ wb 205   ∧ wa 397   = wceq 1542   ∈ wcel 2107  βˆ€wral 3062  Vcvv 3475  [wsbc 3778  β€˜cfv 6544  (class class class)co 7409  Basecbs 17144  distcds 17206  TarskiGCcstrkgc 27679  Itvcitv 27684
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-ext 2704  ax-nul 5307
This theorem depends on definitions:  df-bi 206  df-an 398  df-or 847  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1783  df-sb 2069  df-clab 2711  df-cleq 2725  df-clel 2811  df-ne 2942  df-ral 3063  df-rab 3434  df-v 3477  df-sbc 3779  df-dif 3952  df-un 3954  df-in 3956  df-ss 3966  df-nul 4324  df-if 4530  df-sn 4630  df-pr 4632  df-op 4636  df-uni 4910  df-br 5150  df-iota 6496  df-fv 6552  df-ov 7412  df-trkgc 27699
This theorem is referenced by:  axtgcgrrflx  27713  axtgcgrid  27714  f1otrg  28122  xmstrkgc  28143  eengtrkg  28244
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