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Theorem domnnzr 20566
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 2738 . . 3 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2738 . . 3 (.r𝑅) = (.r𝑅)
3 eqid 2738 . . 3 (0g𝑅) = (0g𝑅)
41, 2, 3isdomn 20565 . 2 (𝑅 ∈ Domn ↔ (𝑅 ∈ NzRing ∧ ∀𝑥 ∈ (Base‘𝑅)∀𝑦 ∈ (Base‘𝑅)((𝑥(.r𝑅)𝑦) = (0g𝑅) → (𝑥 = (0g𝑅) ∨ 𝑦 = (0g𝑅)))))
54simplbi 498 1 (𝑅 ∈ Domn → 𝑅 ∈ NzRing)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wo 844   = wceq 1539  wcel 2106  wral 3064  cfv 6433  (class class class)co 7275  Basecbs 16912  .rcmulr 16963  0gc0g 17150  NzRingcnzr 20528  Domncdomn 20551
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-nul 5230
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-iota 6391  df-fv 6441  df-ov 7278  df-domn 20555
This theorem is referenced by:  domnring  20567  opprdomn  20572  abvn0b  20573  fidomndrng  20579  domnchr  20736  znidomb  20769  nrgdomn  23835  ply1domn  25288  fta1glem1  25330  fta1glem2  25331  fta1b  25334  lgsqrlem4  26497  qsidomlem1  31628  isdomn4  40172  idomrootle  41020  deg1mhm  41032
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