MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  lss1 Structured version   Visualization version   GIF version

Theorem lss1 20209
Description: The set of vectors in a left module is a subspace. (Contributed by NM, 8-Dec-2013.) (Revised by Mario Carneiro, 19-Jun-2014.)
Hypotheses
Ref Expression
lssss.v 𝑉 = (Base‘𝑊)
lssss.s 𝑆 = (LSubSp‘𝑊)
Assertion
Ref Expression
lss1 (𝑊 ∈ LMod → 𝑉𝑆)

Proof of Theorem lss1
Dummy variables 𝑎 𝑏 𝑥 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqidd 2740 . 2 (𝑊 ∈ LMod → (Scalar‘𝑊) = (Scalar‘𝑊))
2 eqidd 2740 . 2 (𝑊 ∈ LMod → (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊)))
3 lssss.v . . 3 𝑉 = (Base‘𝑊)
43a1i 11 . 2 (𝑊 ∈ LMod → 𝑉 = (Base‘𝑊))
5 eqidd 2740 . 2 (𝑊 ∈ LMod → (+g𝑊) = (+g𝑊))
6 eqidd 2740 . 2 (𝑊 ∈ LMod → ( ·𝑠𝑊) = ( ·𝑠𝑊))
7 lssss.s . . 3 𝑆 = (LSubSp‘𝑊)
87a1i 11 . 2 (𝑊 ∈ LMod → 𝑆 = (LSubSp‘𝑊))
9 ssidd 3945 . 2 (𝑊 ∈ LMod → 𝑉𝑉)
103lmodbn0 20142 . 2 (𝑊 ∈ LMod → 𝑉 ≠ ∅)
11 simpl 483 . . 3 ((𝑊 ∈ LMod ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑎𝑉𝑏𝑉)) → 𝑊 ∈ LMod)
12 eqid 2739 . . . . 5 (Scalar‘𝑊) = (Scalar‘𝑊)
13 eqid 2739 . . . . 5 ( ·𝑠𝑊) = ( ·𝑠𝑊)
14 eqid 2739 . . . . 5 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
153, 12, 13, 14lmodvscl 20149 . . . 4 ((𝑊 ∈ LMod ∧ 𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑎𝑉) → (𝑥( ·𝑠𝑊)𝑎) ∈ 𝑉)
16153adant3r3 1183 . . 3 ((𝑊 ∈ LMod ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑎𝑉𝑏𝑉)) → (𝑥( ·𝑠𝑊)𝑎) ∈ 𝑉)
17 simpr3 1195 . . 3 ((𝑊 ∈ LMod ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑎𝑉𝑏𝑉)) → 𝑏𝑉)
18 eqid 2739 . . . 4 (+g𝑊) = (+g𝑊)
193, 18lmodvacl 20146 . . 3 ((𝑊 ∈ LMod ∧ (𝑥( ·𝑠𝑊)𝑎) ∈ 𝑉𝑏𝑉) → ((𝑥( ·𝑠𝑊)𝑎)(+g𝑊)𝑏) ∈ 𝑉)
2011, 16, 17, 19syl3anc 1370 . 2 ((𝑊 ∈ LMod ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑎𝑉𝑏𝑉)) → ((𝑥( ·𝑠𝑊)𝑎)(+g𝑊)𝑏) ∈ 𝑉)
211, 2, 4, 5, 6, 8, 9, 10, 20islssd 20206 1 (𝑊 ∈ LMod → 𝑉𝑆)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396  w3a 1086   = wceq 1539  wcel 2107  cfv 6437  (class class class)co 7284  Basecbs 16921  +gcplusg 16971  Scalarcsca 16974   ·𝑠 cvsca 16975  LModclmod 20132  LSubSpclss 20202
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 1914  ax-6 1972  ax-7 2012  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2155  ax-12 2172  ax-ext 2710  ax-sep 5224  ax-nul 5231  ax-pow 5289  ax-pr 5353
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 2069  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ne 2945  df-ral 3070  df-rex 3071  df-rmo 3072  df-reu 3073  df-rab 3074  df-v 3435  df-sbc 3718  df-dif 3891  df-un 3893  df-in 3895  df-ss 3905  df-nul 4258  df-if 4461  df-pw 4536  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4841  df-br 5076  df-opab 5138  df-mpt 5159  df-id 5490  df-xp 5596  df-rel 5597  df-cnv 5598  df-co 5599  df-dm 5600  df-iota 6395  df-fun 6439  df-fv 6445  df-riota 7241  df-ov 7287  df-0g 17161  df-mgm 18335  df-sgrp 18384  df-mnd 18395  df-grp 18589  df-lmod 20134  df-lss 20203
This theorem is referenced by:  lssuni  20210  islss3  20230  lssmre  20237  lspf  20245  lspval  20246  lmhmrnlss  20321  lidl1  20500  isphld  20868  ocv1  20893  aspval  21086  islshpcv  37074  dochexmidlem8  39488  hdmaprnlem4N  39874  lnmfg  40914
  Copyright terms: Public domain W3C validator