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Theorem mircinv 29122

Description: The center point is invariant of a point inversion. (Contributed by Thierry Arnoux, 25-Aug-2019.)

**Hypotheses**
Ref	Expression
mirval.p	⊢ 𝑃 = (Base‘𝐺)
mirval.d	⊢ − = (dist‘𝐺)
mirval.i	⊢ 𝐼 = (Itv‘𝐺)
mirval.l	⊢ 𝐿 = (LineG‘𝐺)
mirval.s	⊢ 𝑆 = (pInvG‘𝐺)
mirval.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
mirval.a	⊢ (𝜑 → 𝐴 ∈ 𝑃)
mirfv.m	⊢ 𝑀 = (𝑆‘𝐴)

**Assertion**
Ref	Expression
mircinv	⊢ (𝜑 → (𝑀‘𝐴) = 𝐴)

**Proof of Theorem mircinv**
Step	Hyp	Ref	Expression
1		eqid 2761	. 2 ⊢ 𝐴 = 𝐴
2		mirval.p	. . 3 ⊢ 𝑃 = (Base‘𝐺)
3		mirval.d	. . 3 ⊢ − = (dist‘𝐺)
4		mirval.i	. . 3 ⊢ 𝐼 = (Itv‘𝐺)
5		mirval.l	. . 3 ⊢ 𝐿 = (LineG‘𝐺)
6		mirval.s	. . 3 ⊢ 𝑆 = (pInvG‘𝐺)
7		mirval.g	. . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
8		mirval.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
9		mirfv.m	. . 3 ⊢ 𝑀 = (𝑆‘𝐴)
10	2, 3, 4, 5, 6, 7, 8, 9, 8	mirinv 29120	. 2 ⊢ (𝜑 → ((𝑀‘𝐴) = 𝐴 ↔ 𝐴 = 𝐴))
11	1, 10	mpbiri 261	1 ⊢ (𝜑 → (𝑀‘𝐴) = 𝐴)

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2145 ‘cfv 6531 Basecbs 17367 distcds 17417 TarskiGcstrkg 28871 Itvcitv 28877 LineGclng 28878 pInvGcmir 29106

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-rep 5232 ax-sep 5249 ax-nul 5260 ax-pr 5391

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-trkgc 28892 df-trkgb 28893 df-trkgcb 28894 df-trkg 28897 df-mir 29107

This theorem is used by: mirln 29130 mirconn 29132 mirbtwnhl 29134 midexlem 29146 ragtrivb 29159 colperpexlem1 29188 colperpexlem3 29190 midex 29195 mirplncl 29255 lmieu 29271 prlngmid2 29421

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