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Theorem rloc1r 33834
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 2761 . . . . 5 (Base‘𝑅) = (Base‘𝑅)
3 eqid 2761 . . . . 5 (.r‘𝑅) = (.r‘𝑅)
4 eqid 2761 . . . . 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 33832 . . . 4 (𝜑 → 𝐿 ∈ CRing)
109crngringd 20473 . . 3 (𝜑 → 𝐿 ∈ Ring)
11 eqid 2761 . . . . . . . . . 10 (mulGrp‘𝑅) = (mulGrp‘𝑅)
1211, 2mgpbas 20365 . . . . . . . . 9 (Base‘𝑅) = (Base‘(mulGrp‘𝑅))
1312submss 19004 . . . . . . . 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 20409 . . . . . . . . 9 1 = (0g‘(mulGrp‘𝑅))
1716subm0cl 19006 . . . . . . . 8 (𝑆 ∈ (SubMnd‘(mulGrp‘𝑅)) → 1 ∈ 𝑆)
188, 17syl 18 . . . . . . 7 (𝜑 → 1 ∈ 𝑆)
1914, 18sseldd 3932 . . . . . 6 (𝜑 → 1 ∈ (Base‘𝑅))
2019, 18opelxpd 5690 . . . . 5 (𝜑 → ⟨ 1 , 1 ⟩ ∈ ((Base‘𝑅) × 𝑆))
216ovexi 7454 . . . . . 6 ∼ ∈ V
2221ecelqsi 8790 . . . . 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 2761 . . . . 5 (-g‘𝑅) = (-g‘𝑅)
26 eqid 2761 . . . . 5 ((Base‘𝑅) × 𝑆) = ((Base‘𝑅) × 𝑆)
272, 24, 3, 25, 26, 5, 6, 7, 14rlocbas 33829 . . . 4 (𝜑 → (((Base‘𝑅) × 𝑆) / ∼ ) = (Base‘𝐿))
2823, 27eleqtrd 2863 . . 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 2761 . . . . . . . . 9 (.r‘𝐿) = (.r‘𝐿)
362, 3, 4, 5, 6, 29, 30, 31, 32, 33, 34, 35rlocmulval 33831 . . . . . . . 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 20473 . . . . . . . . . . 11 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑅 ∈ Ring)
382, 3, 15, 37, 32ringlidmd 20501 . . . . . . . . . 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 3932 . . . . . . . . . . 11 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → 𝑏 ∈ (Base‘𝑅))
412, 3, 15, 37, 40ringlidmd 20501 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ( 1 (.r‘𝑅)𝑏) = 𝑏)
4238, 41opeq12d 4841 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ⟨( 1 (.r‘𝑅)𝑎), ( 1 (.r‘𝑅)𝑏)⟩ = ⟨𝑎, 𝑏⟩)
4342eceq1d 8758 . . . . . . . 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 2796 . . . . . . 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 7436 . . . . . . 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 2806 . . . . . 6 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥)
4827eqcomd 2767 . . . . . . . . 9 (𝜑 → (Base‘𝐿) = (((Base‘𝑅) × 𝑆) / ∼ ))
4948eleq2d 2847 . . . . . . . 8 (𝜑 → (𝑥 ∈ (Base‘𝐿) ↔ 𝑥 ∈ (((Base‘𝑅) × 𝑆) / ∼ )))
5049biimpa 482 . . . . . . 7 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → 𝑥 ∈ (((Base‘𝑅) × 𝑆) / ∼ ))
5150elrlocbasi 33828 . . . . . 6 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → ∃𝑎 ∈ (Base‘𝑅)∃𝑏 ∈ 𝑆 𝑥 = [⟨𝑎, 𝑏⟩] ∼ )
5247, 51r19.29vva 3223 . . . . 5 ((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) → ([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥)
532, 3, 4, 5, 6, 29, 30, 32, 31, 34, 33, 35rlocmulval 33831 . . . . . . . 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 20502 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑎(.r‘𝑅) 1 ) = 𝑎)
552, 3, 15, 37, 40ringridmd 20502 . . . . . . . . . 10 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑏(.r‘𝑅) 1 ) = 𝑏)
5654, 55opeq12d 4841 . . . . . . . . 9 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ⟨(𝑎(.r‘𝑅) 1 ), (𝑏(.r‘𝑅) 1 )⟩ = ⟨𝑎, 𝑏⟩)
5756eceq1d 8758 . . . . . . . 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 2796 . . . . . . 7 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → ([⟨𝑎, 𝑏⟩] ∼ (.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = [⟨𝑎, 𝑏⟩] ∼ )
5945oveq1d 7435 . . . . . . 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 2806 . . . . . 6 (((((𝜑 ∧ 𝑥 ∈ (Base‘𝐿)) ∧ 𝑎 ∈ (Base‘𝑅)) ∧ 𝑏 ∈ 𝑆) ∧ 𝑥 = [⟨𝑎, 𝑏⟩] ∼ ) → (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥)
6160, 51r19.29vva 3223 . . . . 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 3155 . . 3 (𝜑 → ∀𝑥 ∈ (Base‘𝐿)(([⟨ 1 , 1 ⟩] ∼ (.r‘𝐿)𝑥) = 𝑥 ∧ (𝑥(.r‘𝐿)[⟨ 1 , 1 ⟩] ∼ ) = 𝑥))
64 eqid 2761 . . . . 5 (Base‘𝐿) = (Base‘𝐿)
65 eqid 2761 . . . . 5 (1r‘𝐿) = (1r‘𝐿)
6664, 35, 65isringid 20500 . . . 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 2815 1 (𝜑 → 𝐼 = (1r‘𝐿))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∧ wa 401   = wceq 1570   ∈ wcel 2145  ∀wral 3077   ⊆ wss 3899  ⟨cop 4590   × cxp 5649  ‘cfv 6538  (class class class)co 7420  [cec 8715   / cqs 8716  Basecbs 17387  +gcplusg 17428  .rcmulr 17429  0gc0g 17610  SubMndcsubmnd 18977  -gcsg 19146  mulGrpcmgp 20360  1rcur 20407  Ringcrg 20459  CRingccrg 20460   ~RL cerl 33814   RLocal crloc 33815
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-pow 5327  ax-pr 5391  ax-un 7751  ax-cnex 11256  ax-resscn 11257  ax-1cn 11258  ax-icn 11259  ax-addcl 11260  ax-addrcl 11261  ax-mulcl 11262  ax-mulrcl 11263  ax-mulcom 11264  ax-addass 11265  ax-mulass 11266  ax-distr 11267  ax-i2m1 11268  ax-1ne0 11269  ax-1rid 11270  ax-rnegex 11271  ax-rrecex 11272  ax-cnre 11273  ax-pre-lttri 11274  ax-pre-lttrn 11275  ax-pre-ltadd 11276  ax-pre-mulgt0 11277
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 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-nel 3063  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-pss 3919  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-tp 4589  df-op 4591  df-uni 4868  df-iun 4953  df-br 5104  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5546  df-eprel 5551  df-po 5559  df-so 5560  df-fr 5604  df-we 5606  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-pred 6304  df-ord 6365  df-on 6366  df-lim 6367  df-suc 6368  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-riota 7377  df-ov 7423  df-oprab 7424  df-mpo 7425  df-om 7878  df-1st 8001  df-2nd 8002  df-frecs 8299  df-wrecs 8330  df-recs 8379  df-rdg 8418  df-1o 8476  df-er 8717  df-ec 8719  df-qs 8723  df-en 8974  df-dom 8975  df-sdom 8976  df-fin 8977  df-sup 9434  df-inf 9435  df-pnf 11345  df-mnf 11346  df-xr 11347  df-ltxr 11348  df-le 11349  df-sub 11543  df-neg 11544  df-nn 12336  df-2 12405  df-3 12406  df-4 12407  df-5 12408  df-6 12409  df-7 12410  df-8 12411  df-9 12412  df-n0 12607  df-z 12694  df-dec 12815  df-uz 12966  df-fz 13640  df-struct 17325  df-sets 17342  df-slot 17360  df-ndx 17372  df-base 17388  df-ress 17409  df-plusg 17441  df-mulr 17442  df-sca 17444  df-vsca 17445  df-ip 17446  df-tset 17447  df-ple 17448  df-ds 17450  df-0g 17612  df-imas 17680  df-qus 17681  df-mgm 18816  df-sgrp 18908  df-mnd 18924  df-submnd 18979  df-grp 19147  df-minusg 19148  df-sbg 19149  df-cmn 19996  df-abl 19997  df-mgp 20361  df-rng 20375  df-ur 20408  df-ring 20461  df-cring 20462  df-erl 33816  df-rloc 33817
This theorem is used by:  rlocf1  33835  rlocinvunit  33836  rlocisunit  33837  fracfld  33870  zringfrac  34086
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