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Theorem nlmngp 24638
Description: A normed module is a normed group. (Contributed by Mario Carneiro, 4-Oct-2015.)
Assertion
Ref Expression
nlmngp (𝑊 ∈ NrmMod → 𝑊 ∈ NrmGrp)

Proof of Theorem nlmngp
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2737 . . . 4 (Base‘𝑊) = (Base‘𝑊)
2 eqid 2737 . . . 4 (norm‘𝑊) = (norm‘𝑊)
3 eqid 2737 . . . 4 ( ·𝑠𝑊) = ( ·𝑠𝑊)
4 eqid 2737 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2737 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
6 eqid 2737 . . . 4 (norm‘(Scalar‘𝑊)) = (norm‘(Scalar‘𝑊))
71, 2, 3, 4, 5, 6isnlm 24636 . . 3 (𝑊 ∈ NrmMod ↔ ((𝑊 ∈ NrmGrp ∧ 𝑊 ∈ LMod ∧ (Scalar‘𝑊) ∈ NrmRing) ∧ ∀𝑥 ∈ (Base‘(Scalar‘𝑊))∀𝑦 ∈ (Base‘𝑊)((norm‘𝑊)‘(𝑥( ·𝑠𝑊)𝑦)) = (((norm‘(Scalar‘𝑊))‘𝑥) · ((norm‘𝑊)‘𝑦))))
87simplbi 496 . 2 (𝑊 ∈ NrmMod → (𝑊 ∈ NrmGrp ∧ 𝑊 ∈ LMod ∧ (Scalar‘𝑊) ∈ NrmRing))
98simp1d 1143 1 (𝑊 ∈ NrmMod → 𝑊 ∈ NrmGrp)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1087   = wceq 1542  wcel 2114  wral 3052  cfv 6502  (class class class)co 7370   · cmul 11045  Basecbs 17150  Scalarcsca 17194   ·𝑠 cvsca 17195  LModclmod 20828  normcnm 24537  NrmGrpcngp 24538  NrmRingcnrg 24540  NrmModcnlm 24541
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 5255
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-in 3910  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 6458  df-fv 6510  df-ov 7373  df-nlm 24547
This theorem is referenced by:  nlmdsdi  24642  nlmdsdir  24643  nlmmul0or  24644  nlmvscnlem2  24646  nlmvscnlem1  24647  nlmvscn  24648  nlmtlm  24655  lssnlm  24662  ngpocelbl  24665  isnmhm2  24713  idnmhm  24715  0nmhm  24716  nmoleub2lem  25087  nmoleub2lem3  25088  nmoleub2lem2  25089  nmoleub3  25092  nmhmcn  25093  ncvsm1  25127  ncvsdif  25128  ncvspi  25129  ncvs1  25130  ncvspds  25134  cphngp  25146  ipcnlem2  25217  ipcnlem1  25218  csscld  25222  bnngp  25315  cssbn  25348
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