lspsnel6 - Metamath Proof Explorer

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Theorem lspsnel6 20890

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	⊢ (𝜑 → 𝑊 ∈ LMod)
lspsnel5.a	⊢ (𝜑 → 𝑈 ∈ 𝑆)

**Assertion**
Ref	Expression
lspsnel6	⊢ (𝜑 → (𝑋 ∈ 𝑈 ↔ (𝑋 ∈ 𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)))

**Proof of Theorem lspsnel6**
Step	Hyp	Ref	Expression
1		lspsnel5.a	. . . 4 ⊢ (𝜑 → 𝑈 ∈ 𝑆)
2		lspsnel5.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
3		lspsnel5.s	. . . . 5 ⊢ 𝑆 = (LSubSp‘𝑊)
4	2, 3	lssel 20833	. . . 4 ⊢ ((𝑈 ∈ 𝑆 ∧ 𝑋 ∈ 𝑈) → 𝑋 ∈ 𝑉)
5	1, 4	sylan 578	. . 3 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → 𝑋 ∈ 𝑉)
6		lspsnel5.w	. . . . 5 ⊢ (𝜑 → 𝑊 ∈ LMod)
7	6	adantr 479	. . . 4 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → 𝑊 ∈ LMod)
8	1	adantr 479	. . . 4 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → 𝑈 ∈ 𝑆)
9		simpr 483	. . . 4 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → 𝑋 ∈ 𝑈)
10		lspsnel5.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
11	3, 10	lspsnss 20886	. . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆 ∧ 𝑋 ∈ 𝑈) → (𝑁‘{𝑋}) ⊆ 𝑈)
12	7, 8, 9, 11	syl3anc 1368	. . 3 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → (𝑁‘{𝑋}) ⊆ 𝑈)
13	5, 12	jca 510	. 2 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑈) → (𝑋 ∈ 𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈))
14	2, 10	lspsnid 20889	. . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝑋 ∈ 𝑉) → 𝑋 ∈ (𝑁‘{𝑋}))
15	6, 14	sylan 578	. . . 4 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑉) → 𝑋 ∈ (𝑁‘{𝑋}))
16		ssel 3970	. . . 4 ⊢ ((𝑁‘{𝑋}) ⊆ 𝑈 → (𝑋 ∈ (𝑁‘{𝑋}) → 𝑋 ∈ 𝑈))
17	15, 16	syl5com 31	. . 3 ⊢ ((𝜑 ∧ 𝑋 ∈ 𝑉) → ((𝑁‘{𝑋}) ⊆ 𝑈 → 𝑋 ∈ 𝑈))
18	17	impr 453	. 2 ⊢ ((𝜑 ∧ (𝑋 ∈ 𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)) → 𝑋 ∈ 𝑈)
19	13, 18	impbida 799	1 ⊢ (𝜑 → (𝑋 ∈ 𝑈 ↔ (𝑋 ∈ 𝑉 ∧ (𝑁‘{𝑋}) ⊆ 𝑈)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ⊆ wss 3944 {csn 4630 ‘cfv 6549 Basecbs 17183 LModclmod 20755 LSubSpclss 20827 LSpanclspn 20867

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5365 ax-pr 5429

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2930 df-ral 3051 df-rex 3060 df-rmo 3363 df-reu 3364 df-rab 3419 df-v 3463 df-sbc 3774 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-nul 4323 df-if 4531 df-pw 4606 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-int 4951 df-iun 4999 df-br 5150 df-opab 5212 df-mpt 5233 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-rn 5689 df-res 5690 df-ima 5691 df-iota 6501 df-fun 6551 df-fn 6552 df-f 6553 df-f1 6554 df-fo 6555 df-f1o 6556 df-fv 6557 df-riota 7375 df-ov 7422 df-0g 17426 df-mgm 18603 df-sgrp 18682 df-mnd 18698 df-grp 18901 df-lmod 20757 df-lss 20828 df-lsp 20868

This theorem is referenced by: lspsnel5 20891 lsmelval2 20982 dihjat1lem 41028

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