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Mirrors > Home > MPE Home > Th. List > lsscl | Structured version Visualization version GIF version |
Description: Closure property of a subspace. (Contributed by NM, 8-Dec-2013.) (Revised by Mario Carneiro, 8-Jan-2015.) |
Ref | Expression |
---|---|
lsscl.f | ⊢ 𝐹 = (Scalar‘𝑊) |
lsscl.b | ⊢ 𝐵 = (Base‘𝐹) |
lsscl.p | ⊢ + = (+g‘𝑊) |
lsscl.t | ⊢ · = ( ·𝑠 ‘𝑊) |
lsscl.s | ⊢ 𝑆 = (LSubSp‘𝑊) |
Ref | Expression |
---|---|
lsscl | ⊢ ((𝑈 ∈ 𝑆 ∧ (𝑍 ∈ 𝐵 ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈)) → ((𝑍 · 𝑋) + 𝑌) ∈ 𝑈) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | lsscl.f | . . . 4 ⊢ 𝐹 = (Scalar‘𝑊) | |
2 | lsscl.b | . . . 4 ⊢ 𝐵 = (Base‘𝐹) | |
3 | eqid 2738 | . . . 4 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
4 | lsscl.p | . . . 4 ⊢ + = (+g‘𝑊) | |
5 | lsscl.t | . . . 4 ⊢ · = ( ·𝑠 ‘𝑊) | |
6 | lsscl.s | . . . 4 ⊢ 𝑆 = (LSubSp‘𝑊) | |
7 | 1, 2, 3, 4, 5, 6 | islss 20196 | . . 3 ⊢ (𝑈 ∈ 𝑆 ↔ (𝑈 ⊆ (Base‘𝑊) ∧ 𝑈 ≠ ∅ ∧ ∀𝑥 ∈ 𝐵 ∀𝑎 ∈ 𝑈 ∀𝑏 ∈ 𝑈 ((𝑥 · 𝑎) + 𝑏) ∈ 𝑈)) |
8 | 7 | simp3bi 1146 | . 2 ⊢ (𝑈 ∈ 𝑆 → ∀𝑥 ∈ 𝐵 ∀𝑎 ∈ 𝑈 ∀𝑏 ∈ 𝑈 ((𝑥 · 𝑎) + 𝑏) ∈ 𝑈) |
9 | oveq1 7282 | . . . . 5 ⊢ (𝑥 = 𝑍 → (𝑥 · 𝑎) = (𝑍 · 𝑎)) | |
10 | 9 | oveq1d 7290 | . . . 4 ⊢ (𝑥 = 𝑍 → ((𝑥 · 𝑎) + 𝑏) = ((𝑍 · 𝑎) + 𝑏)) |
11 | 10 | eleq1d 2823 | . . 3 ⊢ (𝑥 = 𝑍 → (((𝑥 · 𝑎) + 𝑏) ∈ 𝑈 ↔ ((𝑍 · 𝑎) + 𝑏) ∈ 𝑈)) |
12 | oveq2 7283 | . . . . 5 ⊢ (𝑎 = 𝑋 → (𝑍 · 𝑎) = (𝑍 · 𝑋)) | |
13 | 12 | oveq1d 7290 | . . . 4 ⊢ (𝑎 = 𝑋 → ((𝑍 · 𝑎) + 𝑏) = ((𝑍 · 𝑋) + 𝑏)) |
14 | 13 | eleq1d 2823 | . . 3 ⊢ (𝑎 = 𝑋 → (((𝑍 · 𝑎) + 𝑏) ∈ 𝑈 ↔ ((𝑍 · 𝑋) + 𝑏) ∈ 𝑈)) |
15 | oveq2 7283 | . . . 4 ⊢ (𝑏 = 𝑌 → ((𝑍 · 𝑋) + 𝑏) = ((𝑍 · 𝑋) + 𝑌)) | |
16 | 15 | eleq1d 2823 | . . 3 ⊢ (𝑏 = 𝑌 → (((𝑍 · 𝑋) + 𝑏) ∈ 𝑈 ↔ ((𝑍 · 𝑋) + 𝑌) ∈ 𝑈)) |
17 | 11, 14, 16 | rspc3v 3573 | . 2 ⊢ ((𝑍 ∈ 𝐵 ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈) → (∀𝑥 ∈ 𝐵 ∀𝑎 ∈ 𝑈 ∀𝑏 ∈ 𝑈 ((𝑥 · 𝑎) + 𝑏) ∈ 𝑈 → ((𝑍 · 𝑋) + 𝑌) ∈ 𝑈)) |
18 | 8, 17 | mpan9 507 | 1 ⊢ ((𝑈 ∈ 𝑆 ∧ (𝑍 ∈ 𝐵 ∧ 𝑋 ∈ 𝑈 ∧ 𝑌 ∈ 𝑈)) → ((𝑍 · 𝑋) + 𝑌) ∈ 𝑈) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1086 = wceq 1539 ∈ wcel 2106 ≠ wne 2943 ∀wral 3064 ⊆ wss 3887 ∅c0 4256 ‘cfv 6433 (class class class)co 7275 Basecbs 16912 +gcplusg 16962 Scalarcsca 16965 ·𝑠 cvsca 16966 LSubSpclss 20193 |
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-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-rab 3073 df-v 3434 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-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-iota 6391 df-fun 6435 df-fv 6441 df-ov 7278 df-lss 20194 |
This theorem is referenced by: lssvsubcl 20205 lssvacl 20216 lssvscl 20217 islss3 20221 lssintcl 20226 lspsolvlem 20404 lbsextlem2 20421 isphld 20859 |
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