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Theorem lspsnel6 20256
Description: Relationship between a vector and the 1-dim (or 0-dim) subspace it generates. (Contributed by NM, 8-Aug-2014.) (Revised by Mario Carneiro, 8-Jan-2015.)
Hypotheses
Ref Expression
lspsnel5.v 𝑉 = (Base‘𝑊)
lspsnel5.s 𝑆 = (LSubSp‘𝑊)
lspsnel5.n 𝑁 = (LSpan‘𝑊)
lspsnel5.w (𝜑𝑊 ∈ LMod)
lspsnel5.a (𝜑𝑈𝑆)
Assertion
Ref Expression
lspsnel6 (𝜑 → (𝑋𝑈 ↔ (𝑋𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)))

Proof of Theorem lspsnel6
StepHypRef Expression
1 lspsnel5.a . . . 4 (𝜑𝑈𝑆)
2 lspsnel5.v . . . . 5 𝑉 = (Base‘𝑊)
3 lspsnel5.s . . . . 5 𝑆 = (LSubSp‘𝑊)
42, 3lssel 20199 . . . 4 ((𝑈𝑆𝑋𝑈) → 𝑋𝑉)
51, 4sylan 580 . . 3 ((𝜑𝑋𝑈) → 𝑋𝑉)
6 lspsnel5.w . . . . 5 (𝜑𝑊 ∈ LMod)
76adantr 481 . . . 4 ((𝜑𝑋𝑈) → 𝑊 ∈ LMod)
81adantr 481 . . . 4 ((𝜑𝑋𝑈) → 𝑈𝑆)
9 simpr 485 . . . 4 ((𝜑𝑋𝑈) → 𝑋𝑈)
10 lspsnel5.n . . . . 5 𝑁 = (LSpan‘𝑊)
113, 10lspsnss 20252 . . . 4 ((𝑊 ∈ LMod ∧ 𝑈𝑆𝑋𝑈) → (𝑁‘{𝑋}) ⊆ 𝑈)
127, 8, 9, 11syl3anc 1370 . . 3 ((𝜑𝑋𝑈) → (𝑁‘{𝑋}) ⊆ 𝑈)
135, 12jca 512 . 2 ((𝜑𝑋𝑈) → (𝑋𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈))
142, 10lspsnid 20255 . . . . 5 ((𝑊 ∈ LMod ∧ 𝑋𝑉) → 𝑋 ∈ (𝑁‘{𝑋}))
156, 14sylan 580 . . . 4 ((𝜑𝑋𝑉) → 𝑋 ∈ (𝑁‘{𝑋}))
16 ssel 3914 . . . 4 ((𝑁‘{𝑋}) ⊆ 𝑈 → (𝑋 ∈ (𝑁‘{𝑋}) → 𝑋𝑈))
1715, 16syl5com 31 . . 3 ((𝜑𝑋𝑉) → ((𝑁‘{𝑋}) ⊆ 𝑈𝑋𝑈))
1817impr 455 . 2 ((𝜑 ∧ (𝑋𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)) → 𝑋𝑈)
1913, 18impbida 798 1 (𝜑 → (𝑋𝑈 ↔ (𝑋𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396   = wceq 1539  wcel 2106  wss 3887  {csn 4561  cfv 6433  Basecbs 16912  LModclmod 20123  LSubSpclss 20193  LSpanclspn 20233
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-rep 5209  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352
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-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rmo 3071  df-reu 3072  df-rab 3073  df-v 3434  df-sbc 3717  df-csb 3833  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-int 4880  df-iun 4926  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-riota 7232  df-ov 7278  df-0g 17152  df-mgm 18326  df-sgrp 18375  df-mnd 18386  df-grp 18580  df-lmod 20125  df-lss 20194  df-lsp 20234
This theorem is referenced by:  lspsnel5  20257  lsmelval2  20347  dihjat1lem  39442
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