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Theorem rloc1r 33933
Description: The multiplicative identity of a ring localization. (Contributed by Thierry Arnoux, 4-May-2025.)
Hypotheses
Ref Expression
rloc0g.1 0 = (0g‘𝑅)
rloc0g.2 1 = (1r‘𝑅)
rloc0g.3 𝐿 = (𝑅 RLocal 𝑆)
rloc0g.4 ∼ = (𝑅 ~RL 𝑆)
rloc0g.5 (𝜑 → 𝑅 ∈ CRing)
rloc0g.6 (𝜑 → 𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)))
rloc1r.i 𝐼 = [⟨ 1 , 1 ⟩] ∼
Assertion
Ref Expression
rloc1r (𝜑 → 𝐼 = (1r‘𝐿))

Proof of Theorem rloc1r
Dummy variables 𝑎 𝑏 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 rloc1r.i . 2 𝐼 = [⟨ 1 , 1 ⟩] ∼
2 eqid 2763 . . . . 5 (Base‘𝑅) = (Base‘𝑅)
3 eqid 2763 . . . . 5 (.r‘𝑅) = (.r‘𝑅)
4 eqid 2763 . . . . 5 (+g‘𝑅) = (+g‘𝑅)
5 rloc0g.3 . . . . 5 𝐿 = (𝑅 RLocal 𝑆)
6 rloc0g.4 . . . . 5 ∼ = (𝑅 ~RL 𝑆)
7 rloc0g.5 . . . . 5 (𝜑 → 𝑅 ∈ CRing)
8 rloc0g.6 . . . . 5 (𝜑 → 𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)))
92, 3, 4, 5, 6, 7, 8rloccring 33931 . . . 4 (𝜑 → 𝐿 ∈ CRing)
109crngringd 20524 . . 3 (𝜑 → 𝐿 ∈ Ring)
11 eqid 2763 . . . . . . . . . 10 (mulGrp‘𝑅) = (mulGrp‘𝑅)
1211, 2mgpbas 20416 . . . . . . . . 9 (Base‘𝑅) = (Base‘(mulGrp‘𝑅))
1312submss 19054 . . . . . . . 8 (𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)) → 𝑆 ⊆ (Base‘𝑅))
148, 13syl 18 . . . . . . 7 (𝜑 → 𝑆 ⊆ (Base‘𝑅))
15 rloc0g.2 . . . . . . . . . 10 1 = (1r‘𝑅)
1611, 15ringidval 20460 . . . . . . . . 9 1 = (0g‘(mulGrp‘𝑅))
1716subm0cl 19056 . . . . . . . 8 (𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)) → 1 ∈ 𝑆)
188, 17syl 18 . . . . . . 7 (𝜑 → 1 ∈ 𝑆)
1914, 18sseldd 3914 . . . . . 6 (𝜑 → 1 ∈ (Base‘𝑅))
2019, 18opelxpd 5697 . . . . 5 (𝜑 → ⟨ 1 , 1 ⟩ ∈ ((Base‘𝑅) × 𝑆))
216ovexi 7485 . . . . . 6 ∼ ∈ V
2221ecelqsi 8828 . . . . 5 (⟨ 1 , 1 ⟩ ∈ ((Base‘𝑅) × 𝑆) → [⟨ 1 , 1 ⟩] ∼ ∈ (((Base‘𝑅) × 𝑆) / ∼ ))
2320, 22syl 18 . . . 4 (𝜑 → [⟨ 1 , 1 ⟩] ∼ ∈ (((Base‘𝑅) × 𝑆) / ∼ ))
24 rloc0g.1 . . . . 5 0 = (0g‘𝑅)
25 eqid 2763 . . . . 5 (-g‘𝑅) = (-g‘𝑅)
26 eqid 2763 . . . . 5 ((Base‘𝑅) × 𝑆) = ((Base‘𝑅) × 𝑆)
272, 24, 3, 25, 26, 5, 6, 7, 14rlocbas 33928 . . . 4 (𝜑 → (((Base‘𝑅) × 𝑆) / ∼ ) = (Base‘𝐿))
2823, 27eleqtrd 2866 . . 3 (𝜑 → [⟨ 1 , 1 ⟩] ∼ ∈ (Base‘𝐿))
297ad4antr 745 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑅 ∈ CRing)
308ad4antr 745 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)))
3119ad4antr 745 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 1 ∈ (Base‘𝑅))
32 simpllr 788 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑎 ∈ (Base‘𝑅))
3330, 17syl 18 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 1 ∈ 𝑆)
34 simplr 781 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑏 ∈ 𝑆)
35 eqid 2763 . . . . . . . . 9 (.r‘𝐿) = (.r‘𝐿)
362, 3, 4, 5, 6, 29, 30, 31, 32, 33, 34, 35rlocmulval 33930 . . . . . . . 8 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)[⟨𝑎, 𝑏⟩] ∼ ) = [⟨( 1 (.r‘𝑅)𝑎), ( 1 (.r‘𝑅)𝑏)⟩] ∼ )
3729crngringd 20524 . . . . . . . . . . 11 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑅 ∈ Ring)
382, 3, 15, 37, 32ringlidmd 20552 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ( 1 (.r‘𝑅)𝑎) = 𝑎)
3930, 13syl 18 . . . . . . . . . . . 12 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑆 ⊆ (Base‘𝑅))
4039, 34sseldd 3914 . . . . . . . . . . 11 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑏 ∈ (Base‘𝑅))
412, 3, 15, 37, 40ringlidmd 20552 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ( 1 (.r‘𝑅)𝑏) = 𝑏)
4238, 41opeq12d 4853 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ⟨( 1 (.r‘𝑅)𝑎), ( 1 (.r‘𝑅)𝑏)⟩ = ⟨𝑎, 𝑏⟩)
4342eceq1d 8796 . . . . . . . 8 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → [⟨( 1 (.r‘𝑅)𝑎), ( 1 (.r‘𝑅)𝑏)⟩] ∼ = [⟨𝑎, 𝑏⟩] ∼ )
4436, 43eqtrd 2798 . . . . . . 7 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)[⟨𝑎, 𝑏⟩] ∼ ) = [⟨𝑎, 𝑏⟩] ∼ )
45 simpr 490 . . . . . . . 8 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑥 = [⟨𝑎, 𝑏⟩] ∼ )
4645oveq2d 7467 . . . . . . 7 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)[⟨𝑎, 𝑏⟩] ∼ ))
4744, 46, 453eqtr4d 2808 . . . . . 6 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥)
4827eqcomd 2769 . . . . . . . . 9 (𝜑 → (Base‘𝐿) = (((Base‘𝑅) × 𝑆) / ∼ ))
4948eleq2d 2850 . . . . . . . 8 (𝜑 → (𝑥 ∈ (Base‘𝐿) ↔ 𝑥 ∈ (((Base‘𝑅) × 𝑆) / ∼ )))
5049biimpa 482 . . . . . . 7 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → 𝑥 ∈ (((Base‘𝑅) × 𝑆) / ∼ ))
5150elrlocbasi 33927 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → ∃𝑎 ∈ (Base‘𝑅)∃𝑏 ∈ 𝑆 𝑥 = [⟨𝑎, 𝑏⟩] ∼ )
5247, 51r19.29vva 3226 . . . . 5 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥)
532, 3, 4, 5, 6, 29, 30, 32, 31, 34, 33, 35rlocmulval 33930 . . . . . . . 8 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨𝑎, 𝑏⟩] ∼ (.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = [⟨(𝑎(.r‘𝑅) 1 ), (𝑏(.r‘𝑅) 1 )⟩] ∼ )
542, 3, 15, 37, 32ringridmd 20553 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑎(.r‘𝑅) 1 ) = 𝑎)
552, 3, 15, 37, 40ringridmd 20553 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑏(.r‘𝑅) 1 ) = 𝑏)
5654, 55opeq12d 4853 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ⟨(𝑎(.r‘𝑅) 1 ), (𝑏(.r‘𝑅) 1 )⟩ = ⟨𝑎, 𝑏⟩)
5756eceq1d 8796 . . . . . . . 8 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → [⟨(𝑎(.r‘𝑅) 1 ), (𝑏(.r‘𝑅) 1 )⟩] ∼ = [⟨𝑎, 𝑏⟩] ∼ )
5853, 57eqtrd 2798 . . . . . . 7 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨𝑎, 𝑏⟩] ∼ (.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = [⟨𝑎, 𝑏⟩] ∼ )
5945oveq1d 7466 . . . . . . 7 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = ([⟨𝑎, 𝑏⟩] ∼ (.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ))
6058, 59, 453eqtr4d 2808 . . . . . 6 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥)
6160, 51r19.29vva 3226 . . . . 5 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥)
6252, 61jca 521 . . . 4 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → (([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥))
6362ralrimiva 3158 . . 3 (𝜑 → ∀𝑥 ∈ (Base‘𝐿)(([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥))
64 eqid 2763 . . . . 5 (Base‘𝐿) = (Base‘𝐿)
65 eqid 2763 . . . . 5 (1r‘𝐿) = (1r‘𝐿)
6664, 35, 65isringid 20551 . . . 4 (𝐿 ∈ Ring → (([⟨ 1 , 1 ⟩] ∼ ∈ (Base‘𝐿) ∧ ∀𝑥 ∈ (Base‘𝐿)(([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥)) ↔ (1r‘𝐿) = [⟨ 1 , 1 ⟩] ∼ ))
6766biimpa 482 . . 3 ((𝐿 ∈ Ring ∧ ([⟨ 1 , 1 ⟩] ∼ ∈ (Base‘𝐿) ∧ ∀𝑥 ∈ (Base‘𝐿)(([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥))) → (1r‘𝐿) = [⟨ 1 , 1 ⟩] ∼ )
6810, 28, 63, 67syl12anc 850 . 2 (𝜑 → (1r‘𝐿) = [⟨ 1 , 1 ⟩] ∼ )
691, 68eqtr4id 2817 1 (𝜑 → 𝐼 = (1r‘𝐿))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2147  ∀wral 3080   ⊆ wss 3900  ⟨cop 4840   × cxp 5656  ‘cfv 6566  (class class class)co 7451  [cec 8753   / cqs 8754  Basecbs 17431  +gcplusg 17472  .rcmulr 17473  0gc0g 17660  SubMndcsubmnd 19027  -gcsg 19196  mulGrpcmgp 20411  1rcur 20458  Ringcrg 20510  CRingccrg 20511   ~RL cerl 33913   RLocal crloc 33914
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 5238  ax-sep 5255  ax-nul 5266  ax-pow 5334  ax-pr 5398  ax-un 7783  ax-cnex 11295  ax-resscn 11296  ax-1cn 11297  ax-icn 11298  ax-addcl 11299  ax-addrcl 11300  ax-mulcl 11301  ax-mulrcl 11302  ax-mulcom 11303  ax-addass 11304  ax-mulass 11305  ax-distr 11306  ax-i2m1 11307  ax-1ne0 11308  ax-1rid 11309  ax-rnegex 11310  ax-rrecex 11311  ax-cnre 11312  ax-pre-lttri 11313  ax-pre-lttrn 11314  ax-pre-ltadd 11315  ax-pre-mulgt0 11316
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  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-nel 3066  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-pss 4017  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-tp 4593  df-op 4841  df-uni 4873  df-iun 4958  df-br 5109  df-opab 5174  df-mpt 5193  df-tr 5219  df-id 5553  df-eprel 5558  df-po 5566  df-so 5567  df-fr 5611  df-we 5613  df-xp 5664  df-rel 5665  df-cnv 5666  df-co 5667  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-pred 6330  df-ord 6391  df-on 6392  df-lim 6393  df-suc 6394  df-iota 6520  df-fun 6568  df-fn 6569  df-f 6570  df-f1 6571  df-fo 6572  df-f1o 6573  df-fv 6574  df-riota 7408  df-ov 7454  df-oprab 7455  df-mpo 7456  df-om 7912  df-1st 8035  df-2nd 8036  df-frecs 8337  df-wrecs 8368  df-recs 8417  df-rdg 8456  df-1o 8514  df-er 8755  df-ec 8757  df-qs 8761  df-en 9012  df-dom 9013  df-sdom 9014  df-fin 9015  df-sup 9471  df-inf 9472  df-pnf 11384  df-mnf 11385  df-xr 11386  df-ltxr 11387  df-le 11388  df-sub 11582  df-neg 11583  df-nn 12376  df-2 12445  df-3 12446  df-4 12447  df-5 12448  df-6 12449  df-7 12450  df-8 12451  df-9 12452  df-n0 12647  df-z 12734  df-dec 12855  df-uz 13006  df-fz 13680  df-struct 17369  df-sets 17386  df-slot 17404  df-ndx 17416  df-base 17432  df-ress 17453  df-plusg 17486  df-mulr 17487  df-sca 17489  df-vsca 17490  df-ip 17491  df-tset 17492  df-ple 17493  df-ds 17495  df-0g 17662  df-imas 17730  df-qus 17731  df-mgm 18866  df-sgrp 18958  df-mnd 18974  df-submnd 19029  df-grp 19197  df-minusg 19198  df-sbg 19199  df-cmn 20047  df-abl 20048  df-mgp 20412  df-rng 20426  df-ur 20459  df-ring 20512  df-cring 20513  df-erl 33915  df-rloc 33916
This theorem is used by:  rlocf1  33934  rlocinvunit  33935  rlocisunit  33936  fracfld  33974  zringfrac  34189
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