Theorem ismir 26448

Description: Property of the image by the point inversion function. Definition 7.5 of [Schwabhauser] p. 49. (Contributed by Thierry Arnoux, 3-Jun-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)
mirfv.b	⊢ (𝜑 → 𝐵 ∈ 𝑃)
ismir.1	⊢ (𝜑 → 𝐶 ∈ 𝑃)
ismir.2	⊢ (𝜑 → (𝐴 − 𝐶) = (𝐴 − 𝐵))
ismir.3	⊢ (𝜑 → 𝐴 ∈ (𝐶𝐼𝐵))

Assertion

Ref	Expression
ismir	⊢ (𝜑 → 𝐶 = (𝑀‘𝐵))

Proof of Theorem ismir

Dummy variable 𝑧 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		mirval.p	. . 3 ⊢ 𝑃 = (Base‘𝐺)
2		mirval.d	. . 3 ⊢ − = (dist‘𝐺)
3		mirval.i	. . 3 ⊢ 𝐼 = (Itv‘𝐺)
4		mirval.l	. . 3 ⊢ 𝐿 = (LineG‘𝐺)
5		mirval.s	. . 3 ⊢ 𝑆 = (pInvG‘𝐺)
6		mirval.g	. . 3 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
7		mirval.a	. . 3 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
8		mirfv.m	. . 3 ⊢ 𝑀 = (𝑆‘𝐴)
9		mirfv.b	. . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
10	1, 2, 3, 4, 5, 6, 7, 8, 9	mirfv 26445	. 2 ⊢ (𝜑 → (𝑀‘𝐵) = (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵))))
11		ismir.2	. . 3 ⊢ (𝜑 → (𝐴 − 𝐶) = (𝐴 − 𝐵))
12		ismir.3	. . 3 ⊢ (𝜑 → 𝐴 ∈ (𝐶𝐼𝐵))
13		ismir.1	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
14	1, 2, 3, 6, 9, 7	mirreu3 26443	. . . 4 ⊢ (𝜑 → ∃!𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵)))
15		oveq2 7167	. . . . . . 7 ⊢ (𝑧 = 𝐶 → (𝐴 − 𝑧) = (𝐴 − 𝐶))
16	15	eqeq1d 2826	. . . . . 6 ⊢ (𝑧 = 𝐶 → ((𝐴 − 𝑧) = (𝐴 − 𝐵) ↔ (𝐴 − 𝐶) = (𝐴 − 𝐵)))
17		oveq1 7166	. . . . . . 7 ⊢ (𝑧 = 𝐶 → (𝑧𝐼𝐵) = (𝐶𝐼𝐵))
18	17	eleq2d 2901	. . . . . 6 ⊢ (𝑧 = 𝐶 → (𝐴 ∈ (𝑧𝐼𝐵) ↔ 𝐴 ∈ (𝐶𝐼𝐵)))
19	16, 18	anbi12d 632	. . . . 5 ⊢ (𝑧 = 𝐶 → (((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵)) ↔ ((𝐴 − 𝐶) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝐶𝐼𝐵))))
20	19	riota2 7142	. . . 4 ⊢ ((𝐶 ∈ 𝑃 ∧ ∃!𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵))) → (((𝐴 − 𝐶) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝐶𝐼𝐵)) ↔ (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵))) = 𝐶))
21	13, 14, 20	syl2anc 586	. . 3 ⊢ (𝜑 → (((𝐴 − 𝐶) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝐶𝐼𝐵)) ↔ (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵))) = 𝐶))
22	11, 12, 21	mpbi2and 710	. 2 ⊢ (𝜑 → (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝐵) ∧ 𝐴 ∈ (𝑧𝐼𝐵))) = 𝐶)
23	10, 22	eqtr2d 2860	1 ⊢ (𝜑 → 𝐶 = (𝑀‘𝐵))

Syntax hints:   → wi 4   ↔ wb 208   ∧ wa 398   = wceq 1536   ∈ wcel 2113  ∃!wreu 3143  ‘cfv 6358  ℩crio 7116  (class class class)co 7159  Basecbs 16486  distcds 16577  TarskiGcstrkg 26219  Itvcitv 26225  LineGclng 26226  pInvGcmir 26441

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2796  ax-rep 5193  ax-sep 5206  ax-nul 5213  ax-pr 5333

This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2966  df-ne 3020  df-ral 3146  df-rex 3147  df-reu 3148  df-rmo 3149  df-rab 3150  df-v 3499  df-sbc 3776  df-csb 3887  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-nul 4295  df-if 4471  df-pw 4544  df-sn 4571  df-pr 4573  df-op 4577  df-uni 4842  df-iun 4924  df-br 5070  df-opab 5132  df-mpt 5150  df-id 5463  df-xp 5564  df-rel 5565  df-cnv 5566  df-co 5567  df-dm 5568  df-rn 5569  df-res 5570  df-ima 5571  df-iota 6317  df-fun 6360  df-fn 6361  df-f 6362  df-f1 6363  df-fo 6364  df-f1o 6365  df-fv 6366  df-riota 7117  df-ov 7162  df-trkgc 26237  df-trkgb 26238  df-trkgcb 26239  df-trkg 26242  df-mir 26442

This theorem is referenced by:  mirmir  26451  mireq  26454  mirinv  26455  miriso  26459  mirmir2  26463  mirauto  26473  colmid  26477  krippenlem  26479  midexlem  26481  mideulem2  26523  opphllem  26524  midcom  26571  trgcopyeulem  26594