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Theorem ellspsn3 21271
Description: A member of the span of the singleton of a vector is a member of a subspace containing the vector. (elspansn3 32179 analog.) (Contributed by NM, 4-Jul-2014.)
Hypotheses
Ref Expression
lspsnss.s 𝑆 = (LSubSp‘𝑊)
lspsnss.n 𝑁 = (LSpan‘𝑊)
ellspsn3.w (𝜑 → 𝑊 ∈ LMod)
ellspsn3.u (𝜑 → 𝑈 ∈ 𝑆)
ellspsn3.x (𝜑 → 𝑋 ∈ 𝑈)
ellspsn3.y (𝜑 → 𝑌 ∈ (𝑁‘{𝑋}))
Assertion
Ref Expression
ellspsn3 (𝜑 → 𝑌 ∈ 𝑈)

Proof of Theorem ellspsn3
StepHypRef Expression
1 ellspsn3.w . . 3 (𝜑 → 𝑊 ∈ LMod)
2 ellspsn3.u . . 3 (𝜑 → 𝑈 ∈ 𝑆)
3 ellspsn3.x . . 3 (𝜑 → 𝑋 ∈ 𝑈)
4 lspsnss.s . . . 4 𝑆 = (LSubSp‘𝑊)
5 lspsnss.n . . . 4 𝑁 = (LSpan‘𝑊)
64, 5lspsnss 21270 . . 3 ((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆 ∧ 𝑋 ∈ 𝑈) → (𝑁‘{𝑋}) ⊆ 𝑈)
71, 2, 3, 6syl3anc 1398 . 2 (𝜑 → (𝑁‘{𝑋}) ⊆ 𝑈)
8 ellspsn3.y . 2 (𝜑 → 𝑌 ∈ (𝑁‘{𝑋}))
97, 8sseldd 3909 1 (𝜑 → 𝑌 ∈ 𝑈)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   = wceq 1569   ∈ wcel 2144   ⊆ wss 3895  {csn 4584  ‘cfv 6538  LModclmod 21140  LSubSpclss 21211  LSpanclspn 21251
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5326  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rmo 3365  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3847  df-ss 3896  df-dif 4047  df-in 4091  df-un 4151  df-nul 4279  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-int 4907  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5545  df-xp 5656  df-rel 5657  df-cnv 5658  df-co 5659  df-dm 5660  df-rn 5661  df-res 5662  df-ima 5663  df-iota 6494  df-fun 6540  df-fn 6541  df-f 6542  df-f1 6543  df-fo 6544  df-f1o 6545  df-fv 6546  df-riota 7377  df-ov 7423  df-0g 17617  df-mgm 18821  df-sgrp 18913  df-mnd 18929  df-grp 19152  df-lmod 21142  df-lss 21212  df-lsp 21252
This theorem is used by:  ellspsn4  21407
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