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Theorem lshplss 36974
Description: A hyperplane is a subspace. (Contributed by NM, 3-Jul-2014.)
Hypotheses
Ref Expression
lshplss.s 𝑆 = (LSubSp‘𝑊)
lshplss.h 𝐻 = (LSHyp‘𝑊)
lshplss.w (𝜑𝑊 ∈ LMod)
lshplss.u (𝜑𝑈𝐻)
Assertion
Ref Expression
lshplss (𝜑𝑈𝑆)

Proof of Theorem lshplss
Dummy variable 𝑣 is distinct from all other variables.
StepHypRef Expression
1 lshplss.u . . 3 (𝜑𝑈𝐻)
2 lshplss.w . . . 4 (𝜑𝑊 ∈ LMod)
3 eqid 2739 . . . . 5 (Base‘𝑊) = (Base‘𝑊)
4 eqid 2739 . . . . 5 (LSpan‘𝑊) = (LSpan‘𝑊)
5 lshplss.s . . . . 5 𝑆 = (LSubSp‘𝑊)
6 lshplss.h . . . . 5 𝐻 = (LSHyp‘𝑊)
73, 4, 5, 6islshp 36972 . . . 4 (𝑊 ∈ LMod → (𝑈𝐻 ↔ (𝑈𝑆𝑈 ≠ (Base‘𝑊) ∧ ∃𝑣 ∈ (Base‘𝑊)((LSpan‘𝑊)‘(𝑈 ∪ {𝑣})) = (Base‘𝑊))))
82, 7syl 17 . . 3 (𝜑 → (𝑈𝐻 ↔ (𝑈𝑆𝑈 ≠ (Base‘𝑊) ∧ ∃𝑣 ∈ (Base‘𝑊)((LSpan‘𝑊)‘(𝑈 ∪ {𝑣})) = (Base‘𝑊))))
91, 8mpbid 231 . 2 (𝜑 → (𝑈𝑆𝑈 ≠ (Base‘𝑊) ∧ ∃𝑣 ∈ (Base‘𝑊)((LSpan‘𝑊)‘(𝑈 ∪ {𝑣})) = (Base‘𝑊)))
109simp1d 1140 1 (𝜑𝑈𝑆)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  w3a 1085   = wceq 1541  wcel 2109  wne 2944  wrex 3066  cun 3889  {csn 4566  cfv 6430  Basecbs 16893  LModclmod 20104  LSubSpclss 20174  LSpanclspn 20214  LSHypclsh 36968
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1801  ax-4 1815  ax-5 1916  ax-6 1974  ax-7 2014  ax-8 2111  ax-9 2119  ax-10 2140  ax-11 2157  ax-12 2174  ax-ext 2710  ax-sep 5226  ax-nul 5233  ax-pr 5355
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1544  df-fal 1554  df-ex 1786  df-nf 1790  df-sb 2071  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-rab 3074  df-v 3432  df-dif 3894  df-un 3896  df-in 3898  df-ss 3908  df-nul 4262  df-if 4465  df-sn 4567  df-pr 4569  df-op 4573  df-uni 4845  df-br 5079  df-opab 5141  df-mpt 5162  df-id 5488  df-xp 5594  df-rel 5595  df-cnv 5596  df-co 5597  df-dm 5598  df-iota 6388  df-fun 6432  df-fv 6438  df-lshyp 36970
This theorem is referenced by:  lshpnel  36976  lshpnelb  36977  lshpne0  36979  lshpdisj  36980  lshpcmp  36981  lshpsmreu  37102  lshpkrlem1  37103  lshpkrlem5  37107  lshpkr  37110  dochshpncl  39377  dochshpsat  39447  lclkrlem2f  39505
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