Theorem mirf 28587

Description: Point inversion as function. (Contributed by Thierry Arnoux, 30-May-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
mirf	⊢ (𝜑 → 𝑀:𝑃⟶𝑃)

Proof of Theorem mirf

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		riotaex 7348	. . 3 ⊢ (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑦) ∧ 𝐴 ∈ (𝑧𝐼𝑦))) ∈ V
2	1	a1i 11	. 2 ⊢ ((𝜑 ∧ 𝑦 ∈ 𝑃) → (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑦) ∧ 𝐴 ∈ (𝑧𝐼𝑦))) ∈ V)
3		mirfv.m	. . 3 ⊢ 𝑀 = (𝑆‘𝐴)
4		mirval.p	. . . 4 ⊢ 𝑃 = (Base‘𝐺)
5		mirval.d	. . . 4 ⊢ − = (dist‘𝐺)
6		mirval.i	. . . 4 ⊢ 𝐼 = (Itv‘𝐺)
7		mirval.l	. . . 4 ⊢ 𝐿 = (LineG‘𝐺)
8		mirval.s	. . . 4 ⊢ 𝑆 = (pInvG‘𝐺)
9		mirval.g	. . . 4 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
10		mirval.a	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
11	4, 5, 6, 7, 8, 9, 10	mirval 28582	. . 3 ⊢ (𝜑 → (𝑆‘𝐴) = (𝑦 ∈ 𝑃 ↦ (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑦) ∧ 𝐴 ∈ (𝑧𝐼𝑦)))))
12	3, 11	eqtrid 2776	. 2 ⊢ (𝜑 → 𝑀 = (𝑦 ∈ 𝑃 ↦ (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑦) ∧ 𝐴 ∈ (𝑧𝐼𝑦)))))
13	9	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → 𝐺 ∈ TarskiG)
14	10	adantr 480	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → 𝐴 ∈ 𝑃)
15		simpr 484	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → 𝑥 ∈ 𝑃)
16	4, 5, 6, 7, 8, 13, 14, 3, 15	mirfv 28583	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → (𝑀‘𝑥) = (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑥) ∧ 𝐴 ∈ (𝑧𝐼𝑥))))
17	4, 5, 6, 13, 15, 14	mirreu3 28581	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → ∃!𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑥) ∧ 𝐴 ∈ (𝑧𝐼𝑥)))
18		riotacl 7361	. . . 4 ⊢ (∃!𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑥) ∧ 𝐴 ∈ (𝑧𝐼𝑥)) → (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑥) ∧ 𝐴 ∈ (𝑧𝐼𝑥))) ∈ 𝑃)
19	17, 18	syl 17	. . 3 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → (℩𝑧 ∈ 𝑃 ((𝐴 − 𝑧) = (𝐴 − 𝑥) ∧ 𝐴 ∈ (𝑧𝐼𝑥))) ∈ 𝑃)
20	16, 19	eqeltrd 2828	. 2 ⊢ ((𝜑 ∧ 𝑥 ∈ 𝑃) → (𝑀‘𝑥) ∈ 𝑃)
21	2, 12, 20	fmpt2d 7096	1 ⊢ (𝜑 → 𝑀:𝑃⟶𝑃)

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2109  ∃!wreu 3352  Vcvv 3447   ↦ cmpt 5188  ⟶wf 6507  ‘cfv 6511  ℩crio 7343  (class class class)co 7387  Basecbs 17179  distcds 17229  TarskiGcstrkg 28354  Itvcitv 28360  LineGclng 28361  pInvGcmir 28579

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 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-rep 5234  ax-sep 5251  ax-nul 5261  ax-pr 5387

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-ral 3045  df-rex 3054  df-rmo 3354  df-reu 3355  df-rab 3406  df-v 3449  df-sbc 3754  df-csb 3863  df-dif 3917  df-un 3919  df-in 3921  df-ss 3931  df-nul 4297  df-if 4489  df-pw 4565  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4872  df-iun 4957  df-br 5108  df-opab 5170  df-mpt 5189  df-id 5533  df-xp 5644  df-rel 5645  df-cnv 5646  df-co 5647  df-dm 5648  df-rn 5649  df-res 5650  df-ima 5651  df-iota 6464  df-fun 6513  df-fn 6514  df-f 6515  df-f1 6516  df-fo 6517  df-f1o 6518  df-fv 6519  df-riota 7344  df-ov 7390  df-trkgc 28375  df-trkgb 28376  df-trkgcb 28377  df-trkg 28380  df-mir 28580

This theorem is referenced by:  mircl  28588  mirf1o  28596  mirbtwni  28598  mirbtwnb  28599  mirauto  28611  miduniq2  28614  krippenlem  28617