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Theorem nrgring 25037
Description: A normed ring is a ring. (Contributed by Mario Carneiro, 4-Oct-2015.)
Assertion
Ref Expression
nrgring (𝑅 ∈ NrmRing → 𝑅 ∈ Ring)

Proof of Theorem nrgring
StepHypRef Expression
1 eqid 2763 . . 3 (norm‘𝑅) = (norm‘𝑅)
2 eqid 2763 . . 3 (AbsVal‘𝑅) = (AbsVal‘𝑅)
31, 2nrgabv 25035 . 2 (𝑅 ∈ NrmRing → (norm‘𝑅) ∈ (AbsVal‘𝑅))
42abvrcl 21121 . 2 ((norm‘𝑅) ∈ (AbsVal‘𝑅) → 𝑅 ∈ Ring)
53, 4syl 18 1 (𝑅 ∈ NrmRing → 𝑅 ∈ Ring)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147  ‘cfv 6566  Ringcrg 20510  AbsValcabv 21116  normcnm 24950  NrmRingcnrg 24953
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-10 2180  ax-11 2197  ax-12 2216  ax-ext 2735  ax-sep 5255  ax-nul 5266  ax-pr 5398
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2102  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2839  df-nfc 2913  df-ne 2960  df-rab 3417  df-v 3456  df-ss 3901  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-sn 4589  df-pr 4591  df-op 4841  df-uni 4873  df-br 5109  df-opab 5174  df-mpt 5193  df-xp 5664  df-rel 5665  df-cnv 5666  df-dm 5668  df-rn 5669  df-res 5670  df-ima 5671  df-iota 6520  df-fv 6574  df-abv 21117  df-nrg 24959
This theorem is used by:  nrgdsdi  25039  nrgdsdir  25040  nmdvr  25044  nrgtgp  25046  rlmnlm  25062  nrgtrg  25064  nrginvrcnlem  25065  nrginvrcn  25066  nrgtdrg  25067  rlmbn  25737  iistmd  34645  zrhnm  34710  cnzh  34711  rezh  34712
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