ellcoellss - Mathbox for Alexander van der Vekens

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Theorem ellcoellss 47069

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 1136	. . . 4 ⊢ ((𝑀 ∈ LMod ∧ 𝑆 ∈ (LSubSp‘𝑀) ∧ 𝑉 ⊆ 𝑆) → 𝑀 ∈ LMod)
2		eqid 2732	. . . . . . 7 ⊢ (Base‘𝑀) = (Base‘𝑀)
3		eqid 2732	. . . . . . 7 ⊢ (LSubSp‘𝑀) = (LSubSp‘𝑀)
4	2, 3	lssss 20539	. . . . . 6 ⊢ (𝑆 ∈ (LSubSp‘𝑀) → 𝑆 ⊆ (Base‘𝑀))
5	4	3ad2ant2 1134	. . . . 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 6901	. . . . . . . . . 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 413	. . . . . 6 ⊢ (𝑉 ⊆ 𝑆 → (𝑆 ⊆ (Base‘𝑀) → 𝑉 ∈ 𝒫 (Base‘𝑀)))
14	13	3ad2ant3 1135	. . . . 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 2732	. . . . 5 ⊢ (Scalar‘𝑀) = (Scalar‘𝑀)
17		eqid 2732	. . . . 5 ⊢ (Base‘(Scalar‘𝑀)) = (Base‘(Scalar‘𝑀))
18	2, 16, 17	lcoval 47046	. . . 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 584	. . 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 47060	. . . . . . . . . . . . 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 407	. . . . . . . . . . . 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 2821	. . . . . . . . . . . 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 416	. . . . . . . . . 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 481	. . . . . . . 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 455	. . . . . 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 3147	. . . . 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 454	. . 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 3145	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 396 ∧ w3a 1087 = wceq 1541 ∈ wcel 2106 ∀wral 3061 ∃wrex 3070 Vcvv 3474 ⊆ wss 3947 𝒫 cpw 4601 class class class wbr 5147 ‘cfv 6540 (class class class)co 7405 ↑_m cmap 8816 finSupp cfsupp 9357 Basecbs 17140 Scalarcsca 17196 0_gc0g 17381 LModclmod 20463 LSubSpclss 20534 linC clinc 47038 LinCo clinco 47039

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7721 ax-cnex 11162 ax-resscn 11163 ax-1cn 11164 ax-icn 11165 ax-addcl 11166 ax-addrcl 11167 ax-mulcl 11168 ax-mulrcl 11169 ax-mulcom 11170 ax-addass 11171 ax-mulass 11172 ax-distr 11173 ax-i2m1 11174 ax-1ne0 11175 ax-1rid 11176 ax-rnegex 11177 ax-rrecex 11178 ax-cnre 11179 ax-pre-lttri 11180 ax-pre-lttrn 11181 ax-pre-ltadd 11182 ax-pre-mulgt0 11183

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 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 6297 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-isom 6549 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7852 df-1st 7971 df-2nd 7972 df-supp 8143 df-frecs 8262 df-wrecs 8293 df-recs 8367 df-rdg 8406 df-1o 8462 df-er 8699 df-map 8818 df-en 8936 df-dom 8937 df-sdom 8938 df-fin 8939 df-fsupp 9358 df-oi 9501 df-card 9930 df-pnf 11246 df-mnf 11247 df-xr 11248 df-ltxr 11249 df-le 11250 df-sub 11442 df-neg 11443 df-nn 12209 df-2 12271 df-n0 12469 df-z 12555 df-uz 12819 df-fz 13481 df-fzo 13624 df-seq 13963 df-hash 14287 df-sets 17093 df-slot 17111 df-ndx 17123 df-base 17141 df-ress 17170 df-plusg 17206 df-0g 17383 df-gsum 17384 df-mgm 18557 df-sgrp 18606 df-mnd 18622 df-submnd 18668 df-grp 18818 df-minusg 18819 df-sbg 18820 df-subg 18997 df-cntz 19175 df-cmn 19644 df-abl 19645 df-mgp 19982 df-ur 19999 df-ring 20051 df-lmod 20465 df-lss 20535 df-linc 47040 df-lco 47041

This theorem is referenced by: lcosslsp 47072

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