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Theorem domnnzr 20651
Description: A domain is a nonzero ring. (Contributed by Mario Carneiro, 28-Mar-2015.)
Assertion
Ref Expression
domnnzr (𝑅 ∈ Domn → 𝑅 ∈ NzRing)

Proof of Theorem domnnzr
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2737 . . 3 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2737 . . 3 (.r𝑅) = (.r𝑅)
3 eqid 2737 . . 3 (0g𝑅) = (0g𝑅)
41, 2, 3isdomn 20650 . 2 (𝑅 ∈ Domn ↔ (𝑅 ∈ NzRing ∧ ∀𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = (0g𝑅) → (𝑥 = (0g𝑅) ∨ 𝑦 = (0g𝑅)))))
54simplbi 496 1 (𝑅 ∈ Domn → 𝑅 ∈ NzRing)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wo 848   = wceq 1542  wcel 2114  wral 3052  cfv 6500  (class class class)co 7368  Basecbs 17148  .rcmulr 17190  0gc0g 17371  NzRingcnzr 20457  Domncdomn 20637
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709  ax-nul 5253
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-ne 2934  df-ral 3053  df-rab 3402  df-v 3444  df-sbc 3743  df-dif 3906  df-un 3908  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-iota 6456  df-fv 6508  df-ov 7371  df-domn 20640
This theorem is referenced by:  domnring  20652  isdomn4  20661  fidomndrng  20718  abvn0b  20781  domnchr  21499  znidomb  21528  nrgdomn  24627  ply1domn  26097  fta1glem1  26141  fta1glem2  26142  fta1b  26145  idomrootle  26146  lgsqrlem4  27328  domnprodn0  33368  domnprodeq0  33369  subrdom  33378  fracfld  33401  qsidomlem1  33544  1arithufdlem1  33636  ply1dg1rt  33672  deg1prod  33675  vietadeg1  33754  assafld  33814  idomnnzpownz  42499  idomnnzgmulnz  42500  deg1gprod  42507  deg1pow  42508  domnexpgn0cl  42890  fiabv  42903  deg1mhm  43554
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