lsppratlem4 - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > lsppratlem4		Structured version Visualization version GIF version

Theorem lsppratlem4 21040

Description: Lemma for lspprat 21043. In the second case of lsppratlem1 21037, 𝑦 ∈ (𝑁‘{𝑋, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑌}) and 𝑦 ∉ (𝑁‘{𝑥}) implies 𝑌 ∈ (𝑁‘{𝑥, 𝑦}) and thus 𝑋 ∈ (𝑁‘{𝑥, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑦}) as well. (Contributed by NM, 29-Aug-2014.)

**Hypotheses**
Ref	Expression
lspprat.v	⊢ 𝑉 = (Base‘𝑊)
lspprat.s	⊢ 𝑆 = (LSubSp‘𝑊)
lspprat.n	⊢ 𝑁 = (LSpan‘𝑊)
lspprat.w	⊢ (𝜑 → 𝑊 ∈ LVec)
lspprat.u	⊢ (𝜑 → 𝑈 ∈ 𝑆)
lspprat.x	⊢ (𝜑 → 𝑋 ∈ 𝑉)
lspprat.y	⊢ (𝜑 → 𝑌 ∈ 𝑉)
lspprat.p	⊢ (𝜑 → 𝑈 ⊊ (𝑁‘{𝑋, 𝑌}))
lsppratlem1.o	⊢ 0 = (0_g‘𝑊)
lsppratlem1.x2	⊢ (𝜑 → 𝑥 ∈ (𝑈 ∖ { 0 }))
lsppratlem1.y2	⊢ (𝜑 → 𝑦 ∈ (𝑈 ∖ (𝑁‘{𝑥})))
lsppratlem4.x3	⊢ (𝜑 → 𝑋 ∈ (𝑁‘{𝑥, 𝑌}))

**Assertion**
Ref	Expression
lsppratlem4	⊢ (𝜑 → (𝑋 ∈ (𝑁‘{𝑥, 𝑦}) ∧ 𝑌 ∈ (𝑁‘{𝑥, 𝑦})))

**Proof of Theorem lsppratlem4**
Step	Hyp	Ref	Expression
1		lspprat.w	. . . . 5 ⊢ (𝜑 → 𝑊 ∈ LVec)
2		lveclmod 20993	. . . . 5 ⊢ (𝑊 ∈ LVec → 𝑊 ∈ LMod)
3	1, 2	syl 17	. . . 4 ⊢ (𝜑 → 𝑊 ∈ LMod)
4		lspprat.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
5		lspprat.s	. . . . 5 ⊢ 𝑆 = (LSubSp‘𝑊)
6		lspprat.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
7		lspprat.u	. . . . . . . 8 ⊢ (𝜑 → 𝑈 ∈ 𝑆)
8	4, 5	lssss 20822	. . . . . . . 8 ⊢ (𝑈 ∈ 𝑆 → 𝑈 ⊆ 𝑉)
9	7, 8	syl 17	. . . . . . 7 ⊢ (𝜑 → 𝑈 ⊆ 𝑉)
10	9	ssdifssd 4135	. . . . . 6 ⊢ (𝜑 → (𝑈 ∖ { 0 }) ⊆ 𝑉)
11		lsppratlem1.x2	. . . . . 6 ⊢ (𝜑 → 𝑥 ∈ (𝑈 ∖ { 0 }))
12	10, 11	sseldd 3973	. . . . 5 ⊢ (𝜑 → 𝑥 ∈ 𝑉)
13	9	ssdifssd 4135	. . . . . 6 ⊢ (𝜑 → (𝑈 ∖ (𝑁‘{𝑥})) ⊆ 𝑉)
14		lsppratlem1.y2	. . . . . 6 ⊢ (𝜑 → 𝑦 ∈ (𝑈 ∖ (𝑁‘{𝑥})))
15	13, 14	sseldd 3973	. . . . 5 ⊢ (𝜑 → 𝑦 ∈ 𝑉)
16	4, 5, 6, 3, 12, 15	lspprcl 20864	. . . 4 ⊢ (𝜑 → (𝑁‘{𝑥, 𝑦}) ∈ 𝑆)
17		df-pr 4627	. . . . 5 ⊢ {𝑥, 𝑌} = ({𝑥} ∪ {𝑌})
18		snsspr1 4813	. . . . . . 7 ⊢ {𝑥} ⊆ {𝑥, 𝑦}
19	12, 15	prssd 4821	. . . . . . . 8 ⊢ (𝜑 → {𝑥, 𝑦} ⊆ 𝑉)
20	4, 6	lspssid 20871	. . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ {𝑥, 𝑦} ⊆ 𝑉) → {𝑥, 𝑦} ⊆ (𝑁‘{𝑥, 𝑦}))
21	3, 19, 20	syl2anc 582	. . . . . . 7 ⊢ (𝜑 → {𝑥, 𝑦} ⊆ (𝑁‘{𝑥, 𝑦}))
22	18, 21	sstrid 3984	. . . . . 6 ⊢ (𝜑 → {𝑥} ⊆ (𝑁‘{𝑥, 𝑦}))
23	12	snssd 4808	. . . . . . . . 9 ⊢ (𝜑 → {𝑥} ⊆ 𝑉)
24		lspprat.y	. . . . . . . . 9 ⊢ (𝜑 → 𝑌 ∈ 𝑉)
25		lspprat.p	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝑈 ⊊ (𝑁‘{𝑋, 𝑌}))
26	25	pssssd 4089	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑈 ⊆ (𝑁‘{𝑋, 𝑌}))
27	4, 5, 6, 3, 12, 24	lspprcl 20864	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑁‘{𝑥, 𝑌}) ∈ 𝑆)
28		df-pr 4627	. . . . . . . . . . . . . . 15 ⊢ {𝑋, 𝑌} = ({𝑋} ∪ {𝑌})
29		lsppratlem4.x3	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → 𝑋 ∈ (𝑁‘{𝑥, 𝑌}))
30	29	snssd 4808	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → {𝑋} ⊆ (𝑁‘{𝑥, 𝑌}))
31		snsspr2 4814	. . . . . . . . . . . . . . . . 17 ⊢ {𝑌} ⊆ {𝑥, 𝑌}
32	12, 24	prssd 4821	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → {𝑥, 𝑌} ⊆ 𝑉)
33	4, 6	lspssid 20871	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑊 ∈ LMod ∧ {𝑥, 𝑌} ⊆ 𝑉) → {𝑥, 𝑌} ⊆ (𝑁‘{𝑥, 𝑌}))
34	3, 32, 33	syl2anc 582	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → {𝑥, 𝑌} ⊆ (𝑁‘{𝑥, 𝑌}))
35	31, 34	sstrid 3984	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → {𝑌} ⊆ (𝑁‘{𝑥, 𝑌}))
36	30, 35	unssd 4180	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ({𝑋} ∪ {𝑌}) ⊆ (𝑁‘{𝑥, 𝑌}))
37	28, 36	eqsstrid 4021	. . . . . . . . . . . . . 14 ⊢ (𝜑 → {𝑋, 𝑌} ⊆ (𝑁‘{𝑥, 𝑌}))
38	5, 6	lspssp 20874	. . . . . . . . . . . . . 14 ⊢ ((𝑊 ∈ LMod ∧ (𝑁‘{𝑥, 𝑌}) ∈ 𝑆 ∧ {𝑋, 𝑌} ⊆ (𝑁‘{𝑥, 𝑌})) → (𝑁‘{𝑋, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑌}))
39	3, 27, 37, 38	syl3anc 1368	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑁‘{𝑋, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑌}))
40	26, 39	sstrd 3983	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝑈 ⊆ (𝑁‘{𝑥, 𝑌}))
41	17	fveq2i 6894	. . . . . . . . . . . 12 ⊢ (𝑁‘{𝑥, 𝑌}) = (𝑁‘({𝑥} ∪ {𝑌}))
42	40, 41	sseqtrdi 4023	. . . . . . . . . . 11 ⊢ (𝜑 → 𝑈 ⊆ (𝑁‘({𝑥} ∪ {𝑌})))
43	42	ssdifd 4133	. . . . . . . . . 10 ⊢ (𝜑 → (𝑈 ∖ (𝑁‘{𝑥})) ⊆ ((𝑁‘({𝑥} ∪ {𝑌})) ∖ (𝑁‘{𝑥})))
44	43, 14	sseldd 3973	. . . . . . . . 9 ⊢ (𝜑 → 𝑦 ∈ ((𝑁‘({𝑥} ∪ {𝑌})) ∖ (𝑁‘{𝑥})))
45	4, 5, 6	lspsolv 21033	. . . . . . . . 9 ⊢ ((𝑊 ∈ LVec ∧ ({𝑥} ⊆ 𝑉 ∧ 𝑌 ∈ 𝑉 ∧ 𝑦 ∈ ((𝑁‘({𝑥} ∪ {𝑌})) ∖ (𝑁‘{𝑥})))) → 𝑌 ∈ (𝑁‘({𝑥} ∪ {𝑦})))
46	1, 23, 24, 44, 45	syl13anc 1369	. . . . . . . 8 ⊢ (𝜑 → 𝑌 ∈ (𝑁‘({𝑥} ∪ {𝑦})))
47		df-pr 4627	. . . . . . . . 9 ⊢ {𝑥, 𝑦} = ({𝑥} ∪ {𝑦})
48	47	fveq2i 6894	. . . . . . . 8 ⊢ (𝑁‘{𝑥, 𝑦}) = (𝑁‘({𝑥} ∪ {𝑦}))
49	46, 48	eleqtrrdi 2836	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ (𝑁‘{𝑥, 𝑦}))
50	49	snssd 4808	. . . . . 6 ⊢ (𝜑 → {𝑌} ⊆ (𝑁‘{𝑥, 𝑦}))
51	22, 50	unssd 4180	. . . . 5 ⊢ (𝜑 → ({𝑥} ∪ {𝑌}) ⊆ (𝑁‘{𝑥, 𝑦}))
52	17, 51	eqsstrid 4021	. . . 4 ⊢ (𝜑 → {𝑥, 𝑌} ⊆ (𝑁‘{𝑥, 𝑦}))
53	5, 6	lspssp 20874	. . . 4 ⊢ ((𝑊 ∈ LMod ∧ (𝑁‘{𝑥, 𝑦}) ∈ 𝑆 ∧ {𝑥, 𝑌} ⊆ (𝑁‘{𝑥, 𝑦})) → (𝑁‘{𝑥, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑦}))
54	3, 16, 52, 53	syl3anc 1368	. . 3 ⊢ (𝜑 → (𝑁‘{𝑥, 𝑌}) ⊆ (𝑁‘{𝑥, 𝑦}))
55	54, 29	sseldd 3973	. 2 ⊢ (𝜑 → 𝑋 ∈ (𝑁‘{𝑥, 𝑦}))
56	55, 49	jca 510	1 ⊢ (𝜑 → (𝑋 ∈ (𝑁‘{𝑥, 𝑦}) ∧ 𝑌 ∈ (𝑁‘{𝑥, 𝑦})))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1533 ∈ wcel 2098 ∖ cdif 3937 ∪ cun 3938 ⊆ wss 3940 ⊊ wpss 3941 {csn 4624 {cpr 4626 ‘cfv 6542 Basecbs 17177 0_gc0g 17418 LModclmod 20745 LSubSpclss 20817 LSpanclspn 20857 LVecclvec 20989

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 5280 ax-sep 5294 ax-nul 5301 ax-pow 5359 ax-pr 5423 ax-un 7737 ax-cnex 11192 ax-resscn 11193 ax-1cn 11194 ax-icn 11195 ax-addcl 11196 ax-addrcl 11197 ax-mulcl 11198 ax-mulrcl 11199 ax-mulcom 11200 ax-addass 11201 ax-mulass 11202 ax-distr 11203 ax-i2m1 11204 ax-1ne0 11205 ax-1rid 11206 ax-rnegex 11207 ax-rrecex 11208 ax-cnre 11209 ax-pre-lttri 11210 ax-pre-lttrn 11211 ax-pre-ltadd 11212 ax-pre-mulgt0 11213

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 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 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3770 df-csb 3886 df-dif 3943 df-un 3945 df-in 3947 df-ss 3957 df-pss 3960 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5227 df-tr 5261 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 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-riota 7371 df-ov 7418 df-oprab 7419 df-mpo 7420 df-om 7868 df-1st 7989 df-2nd 7990 df-tpos 8228 df-frecs 8283 df-wrecs 8314 df-recs 8388 df-rdg 8427 df-er 8721 df-en 8961 df-dom 8962 df-sdom 8963 df-pnf 11278 df-mnf 11279 df-xr 11280 df-ltxr 11281 df-le 11282 df-sub 11474 df-neg 11475 df-nn 12241 df-2 12303 df-3 12304 df-sets 17130 df-slot 17148 df-ndx 17160 df-base 17178 df-ress 17207 df-plusg 17243 df-mulr 17244 df-0g 17420 df-mgm 18597 df-sgrp 18676 df-mnd 18692 df-grp 18895 df-minusg 18896 df-sbg 18897 df-cmn 19739 df-abl 19740 df-mgp 20077 df-rng 20095 df-ur 20124 df-ring 20177 df-oppr 20275 df-dvdsr 20298 df-unit 20299 df-invr 20329 df-drng 20628 df-lmod 20747 df-lss 20818 df-lsp 20858 df-lvec 20990

This theorem is referenced by: lsppratlem5 21041

W3C validator