ellcoellss - Mathbox for Alexander van der Vekens

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Theorem ellcoellss 47203

Description: Every linear combination of a subset of a linear subspace is also contained in the linear subspace. (Contributed by AV, 20-Apr-2019.) (Proof shortened by AV, 30-Jul-2019.)

**Assertion**
Ref	Expression
ellcoellss	⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → ∀𝑥 ∈ (𝑀 LinCo 𝑉)𝑥 ∈ 𝑆)

Distinct variable groups: 𝑥,𝑀 𝑥,𝑆 𝑥,𝑉

Proof of Theorem ellcoellss Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simp1 1134	. . . 4 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → 𝑀 ∈ LMod)
2		eqid 2730	. . . . . . 7 ⊢ (Base‘𝑀) = (Base‘𝑀)
3		eqid 2730	. . . . . . 7 ⊢ (LSubSp‘𝑀) = (LSubSp‘𝑀)
4	2, 3	lssss 20691	. . . . . 6 ⊢ (𝑆 ∈ (LSubSp‘𝑀) → 𝑆 ⊆ (Base‘𝑀))
5	4	3ad2ant2 1132	. . . . 5 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → 𝑆 ⊆ (Base‘𝑀))
6		sstr 3989	. . . . . . . 8 ⊢ ((𝑉 ⊆ 𝑆 ∧ 𝑆 ⊆ (Base‘𝑀)) → 𝑉 ⊆ (Base‘𝑀))
7		fvex 6903	. . . . . . . . . 10 ⊢ (Base‘𝑀) ∈ V
8	7	ssex 5320	. . . . . . . . 9 ⊢ (𝑉 ⊆ (Base‘𝑀) → 𝑉 ∈ V)
9		elpwg 4604	. . . . . . . . . 10 ⊢ (𝑉 ∈ V → (𝑉 ∈ 𝒫 (Base‘𝑀) ↔ 𝑉 ⊆ (Base‘𝑀)))
10	9	biimprd 247	. . . . . . . . 9 ⊢ (𝑉 ∈ V → (𝑉 ⊆ (Base‘𝑀) → 𝑉 ∈ 𝒫 (Base‘𝑀)))
11	8, 10	mpcom 38	. . . . . . . 8 ⊢ (𝑉 ⊆ (Base‘𝑀) → 𝑉 ∈ 𝒫 (Base‘𝑀))
12	6, 11	syl 17	. . . . . . 7 ⊢ ((𝑉 ⊆ 𝑆 ∧ 𝑆 ⊆ (Base‘𝑀)) → 𝑉 ∈ 𝒫 (Base‘𝑀))
13	12	ex 411	. . . . . 6 ⊢ (𝑉 ⊆ 𝑆 → (𝑆 ⊆ (Base‘𝑀) → 𝑉 ∈ 𝒫 (Base‘𝑀)))
14	13	3ad2ant3 1133	. . . . 5 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → (𝑆 ⊆ (Base‘𝑀) → 𝑉 ∈ 𝒫 (Base‘𝑀)))
15	5, 14	mpd 15	. . . 4 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → 𝑉 ∈ 𝒫 (Base‘𝑀))
16		eqid 2730	. . . . 5 ⊢ (Scalar‘𝑀) = (Scalar‘𝑀)
17		eqid 2730	. . . . 5 ⊢ (Base‘(Scalar‘𝑀)) = (Base‘(Scalar‘𝑀))
18	2, 16, 17	lcoval 47180	. . . 4 ⊢ ((𝑀 ∈ LMod ∧ 𝑉 ∈ 𝒫 (Base‘𝑀)) → (𝑥 ∈ (𝑀 LinCo 𝑉) ↔ (𝑥 ∈ (Base‘𝑀) ∧ ∃𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉)(𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉)))))
19	1, 15, 18	syl2anc 582	. . 3 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → (𝑥 ∈ (𝑀 LinCo 𝑉) ↔ (𝑥 ∈ (Base‘𝑀) ∧ ∃𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉)(𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉)))))
20		lincellss 47194	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀))) → (𝑓( linC ‘𝑀)𝑉) ∈ 𝑆))
21	20	imp 405	. . . . . . . . . . . 12 ⊢ (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ (𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀)))) → (𝑓( linC ‘𝑀)𝑉) ∈ 𝑆)
22		eleq1 2819	. . . . . . . . . . . 12 ⊢ (𝑥 = (𝑓( linC ‘𝑀)𝑉) → (𝑥 ∈ 𝑆 ↔ (𝑓( linC ‘𝑀)𝑉) ∈ 𝑆))
23	21, 22	imbitrrid 245	. . . . . . . . . . 11 ⊢ (𝑥 = (𝑓( linC ‘𝑀)𝑉) → (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ (𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀)))) → 𝑥 ∈ 𝑆))
24	23	expd 414	. . . . . . . . . 10 ⊢ (𝑥 = (𝑓( linC ‘𝑀)𝑉) → ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀))) → 𝑥 ∈ 𝑆)))
25	24	com12 32	. . . . . . . . 9 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → (𝑥 = (𝑓( linC ‘𝑀)𝑉) → ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀))) → 𝑥 ∈ 𝑆)))
26	25	adantr 479	. . . . . . . 8 ⊢ (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ 𝑥 ∈ (Base‘𝑀)) → (𝑥 = (𝑓( linC ‘𝑀)𝑉) → ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀))) → 𝑥 ∈ 𝑆)))
27	26	com13 88	. . . . . . 7 ⊢ ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ 𝑓 finSupp (0_g‘(Scalar‘𝑀))) → (𝑥 = (𝑓( linC ‘𝑀)𝑉) → (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ 𝑥 ∈ (Base‘𝑀)) → 𝑥 ∈ 𝑆)))
28	27	impr 453	. . . . . 6 ⊢ ((𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉) ∧ (𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉))) → (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ 𝑥 ∈ (Base‘𝑀)) → 𝑥 ∈ 𝑆))
29	28	rexlimiva 3145	. . . . 5 ⊢ (∃𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉)(𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉)) → (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ 𝑥 ∈ (Base‘𝑀)) → 𝑥 ∈ 𝑆))
30	29	com12 32	. . . 4 ⊢ (((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) ∧ 𝑥 ∈ (Base‘𝑀)) → (∃𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉)(𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉)) → 𝑥 ∈ 𝑆))
31	30	expimpd 452	. . 3 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → ((𝑥 ∈ (Base‘𝑀) ∧ ∃𝑓 ∈ ((Base‘(Scalar‘𝑀)) ↑_m 𝑉)(𝑓 finSupp (0_g‘(Scalar‘𝑀)) ∧ 𝑥 = (𝑓( linC ‘𝑀)𝑉))) → 𝑥 ∈ 𝑆))
32	19, 31	sylbid 239	. 2 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → (𝑥 ∈ (𝑀 LinCo 𝑉) → 𝑥 ∈ 𝑆))
33	32	ralrimiv 3143	1 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → ∀𝑥 ∈ (𝑀 LinCo 𝑉)𝑥 ∈ 𝑆)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1085 = wceq 1539 ∈ wcel 2104 ∀wral 3059 ∃wrex 3068 Vcvv 3472 ⊆ wss 3947 𝒫 cpw 4601 class class class wbr 5147 ‘cfv 6542 (class class class)co 7411 ↑_m cmap 8822 finSupp cfsupp 9363 Basecbs 17148 Scalarcsca 17204 0_gc0g 17389 LModclmod 20614 LSubSpclss 20686 linC clinc 47172 LinCo clinco 47173

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-se 5631 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-er 8705 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-oi 9507 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-n0 12477 df-z 12563 df-uz 12827 df-fz 13489 df-fzo 13632 df-seq 13971 df-hash 14295 df-sets 17101 df-slot 17119 df-ndx 17131 df-base 17149 df-ress 17178 df-plusg 17214 df-0g 17391 df-gsum 17392 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-submnd 18706 df-grp 18858 df-minusg 18859 df-sbg 18860 df-subg 19039 df-cntz 19222 df-cmn 19691 df-abl 19692 df-mgp 20029 df-ur 20076 df-ring 20129 df-lmod 20616 df-lss 20687 df-linc 47174 df-lco 47175

This theorem is referenced by: lcosslsp 47206

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