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Theorem mircinv 29173

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 2763	. 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 29171	. 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 2147 ‘cfv 6561 Basecbs 17419 distcds 17469 TarskiGcstrkg 28922 Itvcitv 28928 LineGclng 28929 pInvGcmir 29157

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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5236 ax-sep 5253 ax-nul 5264 ax-pr 5396

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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-iun 4956 df-br 5107 df-opab 5172 df-mpt 5191 df-id 5551 df-xp 5662 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-res 5668 df-ima 5669 df-iota 6515 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7403 df-ov 7449 df-trkgc 28943 df-trkgb 28944 df-trkgcb 28945 df-trkg 28948 df-mir 29158

This theorem is used by: mirln 29181 mirconn 29183 mirbtwnhl 29185 midexlem 29197 ragtrivb 29210 colperpexlem1 29239 colperpexlem3 29241 midex 29246 mirplncl 29306 lmieu 29322 prlngmid2 29472

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