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Theorem dchrrcl 24765
Description: Reverse closure for a Dirichlet character. (Contributed by Mario Carneiro, 12-May-2016.)
Hypotheses
Ref Expression
dchrrcl.g 𝐺 = (DChr‘𝑁)
dchrrcl.b 𝐷 = (Base‘𝐺)
Assertion
Ref Expression
dchrrcl (𝑋𝐷𝑁 ∈ ℕ)

Proof of Theorem dchrrcl
Dummy variables 𝑛 𝑏 𝑥 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-dchr 24758 . . 3 DChr = (𝑛 ∈ ℕ ↦ (ℤ/nℤ‘𝑛) / 𝑧{𝑥 ∈ ((mulGrp‘𝑧) MndHom (mulGrp‘ℂfld)) ∣ (((Base‘𝑧) ∖ (Unit‘𝑧)) × {0}) ⊆ 𝑥} / 𝑏{⟨(Base‘ndx), 𝑏⟩, ⟨(+g‘ndx), ( ∘𝑓 · ↾ (𝑏 × 𝑏))⟩})
21dmmptss 5548 . 2 dom DChr ⊆ ℕ
3 n0i 3879 . . 3 (𝑋𝐷 → ¬ 𝐷 = ∅)
4 dchrrcl.g . . . . 5 𝐺 = (DChr‘𝑁)
5 ndmfv 6128 . . . . 5 𝑁 ∈ dom DChr → (DChr‘𝑁) = ∅)
64, 5syl5eq 2656 . . . 4 𝑁 ∈ dom DChr → 𝐺 = ∅)
7 fveq2 6103 . . . . 5 (𝐺 = ∅ → (Base‘𝐺) = (Base‘∅))
8 dchrrcl.b . . . . 5 𝐷 = (Base‘𝐺)
9 base0 15740 . . . . 5 ∅ = (Base‘∅)
107, 8, 93eqtr4g 2669 . . . 4 (𝐺 = ∅ → 𝐷 = ∅)
116, 10syl 17 . . 3 𝑁 ∈ dom DChr → 𝐷 = ∅)
123, 11nsyl2 141 . 2 (𝑋𝐷𝑁 ∈ dom DChr)
132, 12sseldi 3566 1 (𝑋𝐷𝑁 ∈ ℕ)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4   = wceq 1475  wcel 1977  {crab 2900  csb 3499  cdif 3537  wss 3540  c0 3874  {csn 4125  {cpr 4127  cop 4131   × cxp 5036  dom cdm 5038  cres 5040  cfv 5804  (class class class)co 6549  𝑓 cof 6793  0cc0 9815   · cmul 9820  cn 10897  ndxcnx 15692  Basecbs 15695  +gcplusg 15768   MndHom cmhm 17156  mulGrpcmgp 18312  Unitcui 18462  fldccnfld 19567  ℤ/nczn 19670  DChrcdchr 24757
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833
This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-iota 5768  df-fun 5806  df-fv 5812  df-slot 15699  df-base 15700  df-dchr 24758
This theorem is referenced by:  dchrmhm  24766  dchrf  24767  dchrelbas4  24768  dchrzrh1  24769  dchrzrhcl  24770  dchrzrhmul  24771  dchrmul  24773  dchrmulcl  24774  dchrn0  24775  dchrmulid2  24777  dchrinvcl  24778  dchrghm  24781  dchrabs  24785  dchrinv  24786  dchrsum2  24793  dchrsum  24794  dchr2sum  24798
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