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Theorem rrextdrg 34333
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 2769 . . . 4 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2769 . . . 4 ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅))) = ((dist‘𝑅) ↾ ((Base‘𝑅) × (Base‘𝑅)))
3 eqid 2769 . . . 4 (ℤMod‘𝑅) = (ℤMod‘𝑅)
41, 2, 3isrrext 34331 . . 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 1161 . 2 (𝑅 ∈ ℝExt → (𝑅 ∈ NrmRing ∧ 𝑅 ∈ DivRing))
65simprd 500 1 (𝑅 ∈ ℝExt → 𝑅 ∈ DivRing)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 400   = wceq 1567  wcel 2149   × cxp 5657  cres 5661  cfv 6534  0cc0 11096  Basecbs 17265  distcds 17315  DivRingcdr 20809  metUnifcmetu 21478  ℤModczlm 21615  chrcchr 21616  UnifStcuss 24375  CUnifSpccusp 24418  NrmRingcnrg 24701  NrmModcnlm 24702   ℝExt crrext 34325
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-rab 3424  df-v 3465  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5111  df-opab 5175  df-xp 5665  df-res 5671  df-iota 6490  df-fv 6542  df-rrext 34330
This theorem is referenced by:  rrhfe  34343  rrhcne  34344  rrhqima  34345  rrh0  34346  sitgclg  34673
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