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Theorem rrextdrg 34007
Description: An extension of is a division ring. (Contributed by Thierry Arnoux, 2-May-2018.)
Assertion
Ref Expression
rrextdrg (𝑅 ∈ ℝExt → 𝑅 ∈ DivRing)

Proof of Theorem rrextdrg
StepHypRef Expression
1 eqid 2731 . . . 4 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2731 . . . 4 ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) = ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅)))
3 eqid 2731 . . . 4 (ℤMod‘𝑅) = (ℤMod‘𝑅)
41, 2, 3isrrext 34005 . . 3 (𝑅 ∈ ℝExt ↔ ((𝑅 ∈ NrmRing ∧ 𝑅 ∈ DivRing) ∧ ((ℤMod‘𝑅) ∈ NrmMod ∧ (chr‘𝑅) = 0) ∧ (𝑅 ∈ CUnifSp ∧ (UnifSt‘𝑅) = (metUnif‘((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅)))))))
54simp1bi 1145 . 2 (𝑅 ∈ ℝExt → (𝑅 ∈ NrmRing ∧ 𝑅 ∈ DivRing))
65simprd 495 1 (𝑅 ∈ ℝExt → 𝑅 ∈ DivRing)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395   = wceq 1541  wcel 2111   × cxp 5609  cres 5613  cfv 6476  0cc0 11001  Basecbs 17115  distcds 17165  DivRingcdr 20639  metUnifcmetu 21277  ℤModczlm 21432  chrcchr 21433  UnifStcuss 24163  CUnifSpccusp 24206  NrmRingcnrg 24489  NrmModcnlm 24490   ℝExt crrext 33999
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-ext 2703
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2710  df-cleq 2723  df-clel 2806  df-rab 3396  df-v 3438  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-nul 4279  df-if 4471  df-sn 4572  df-pr 4574  df-op 4578  df-uni 4855  df-br 5087  df-opab 5149  df-xp 5617  df-res 5623  df-iota 6432  df-fv 6484  df-rrext 34004
This theorem is referenced by:  rrhfe  34017  rrhcne  34018  rrhqima  34019  rrh0  34020  sitgclg  34347
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