lsatfixedN - Mathbox for Norm Megill

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Theorem lsatfixedN 36305

Description: Show equality with the span of the sum of two vectors, one of which (𝑋) is fixed in advance. Compare lspfixed 19893. (Contributed by NM, 29-May-2015.) (New usage is discouraged.)

**Hypotheses**
Ref	Expression
lsatfixed.v	⊢ 𝑉 = (Base‘𝑊)
lsatfixed.p	⊢ + = (+_g‘𝑊)
lsatfixed.o	⊢ 0 = (0_g‘𝑊)
lsatfixed.n	⊢ 𝑁 = (LSpan‘𝑊)
lsatfixed.a	⊢ 𝐴 = (LSAtoms‘𝑊)
lsatfixed.w	⊢ (𝜑 → 𝑊 ∈ LVec)
lsatfixed.q	⊢ (𝜑 → 𝑄 ∈ 𝐴)
lsatfixed.x	⊢ (𝜑 → 𝑋 ∈ 𝑉)
lsatfixed.y	⊢ (𝜑 → 𝑌 ∈ 𝑉)
lsatfixed.e	⊢ (𝜑 → 𝑄 ≠ (𝑁‘{𝑋}))
lsatfixed.f	⊢ (𝜑 → 𝑄 ≠ (𝑁‘{𝑌}))
lsatfixed.g	⊢ (𝜑 → 𝑄 ⊆ (𝑁‘{𝑋, 𝑌}))

**Assertion**
Ref	Expression
lsatfixedN	⊢ (𝜑 → ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑄 = (𝑁‘{(𝑋 + 𝑧)}))

Distinct variable groups: 𝑧,𝑁 𝑧, 0 𝑧, + 𝜑,𝑧 𝑧,𝑄 𝑧,𝑉 𝑧,𝑊 𝑧,𝑋 𝑧,𝑌 Allowed substitution hint: 𝐴(𝑧)

Proof of Theorem lsatfixedN Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		lsatfixed.q	. . 3 ⊢ (𝜑 → 𝑄 ∈ 𝐴)
2		lsatfixed.w	. . . 4 ⊢ (𝜑 → 𝑊 ∈ LVec)
3		lsatfixed.v	. . . . 5 ⊢ 𝑉 = (Base‘𝑊)
4		lsatfixed.n	. . . . 5 ⊢ 𝑁 = (LSpan‘𝑊)
5		lsatfixed.o	. . . . 5 ⊢ 0 = (0_g‘𝑊)
6		lsatfixed.a	. . . . 5 ⊢ 𝐴 = (LSAtoms‘𝑊)
7	3, 4, 5, 6	islsat 36287	. . . 4 ⊢ (𝑊 ∈ LVec → (𝑄 ∈ 𝐴 ↔ ∃𝑤 ∈ (𝑉 ∖ { 0 })𝑄 = (𝑁‘{𝑤})))
8	2, 7	syl 17	. . 3 ⊢ (𝜑 → (𝑄 ∈ 𝐴 ↔ ∃𝑤 ∈ (𝑉 ∖ { 0 })𝑄 = (𝑁‘{𝑤})))
9	1, 8	mpbid 235	. 2 ⊢ (𝜑 → ∃𝑤 ∈ (𝑉 ∖ { 0 })𝑄 = (𝑁‘{𝑤}))
10		lsatfixed.p	. . . . 5 ⊢ + = (+_g‘𝑊)
11	2	3ad2ant1 1130	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑊 ∈ LVec)
12		lsatfixed.x	. . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝑉)
13	12	3ad2ant1 1130	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑋 ∈ 𝑉)
14		lsatfixed.y	. . . . . 6 ⊢ (𝜑 → 𝑌 ∈ 𝑉)
15	14	3ad2ant1 1130	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑌 ∈ 𝑉)
16		simp2 1134	. . . . . 6 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑤 ∈ (𝑉 ∖ { 0 }))
17		simp3 1135	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑄 = (𝑁‘{𝑤}))
18	17	eqcomd 2804	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑁‘{𝑤}) = 𝑄)
19		lsatfixed.e	. . . . . . . 8 ⊢ (𝜑 → 𝑄 ≠ (𝑁‘{𝑋}))
20	19	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑄 ≠ (𝑁‘{𝑋}))
21	18, 20	eqnetrd 3054	. . . . . 6 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑁‘{𝑤}) ≠ (𝑁‘{𝑋}))
22	3, 5, 4, 11, 16, 13, 21	lspsnne1 19882	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → ¬ 𝑤 ∈ (𝑁‘{𝑋}))
23		lsatfixed.f	. . . . . . . 8 ⊢ (𝜑 → 𝑄 ≠ (𝑁‘{𝑌}))
24	23	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑄 ≠ (𝑁‘{𝑌}))
25	18, 24	eqnetrd 3054	. . . . . 6 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑁‘{𝑤}) ≠ (𝑁‘{𝑌}))
26	3, 5, 4, 11, 16, 15, 25	lspsnne1 19882	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → ¬ 𝑤 ∈ (𝑁‘{𝑌}))
27		lsatfixed.g	. . . . . . . 8 ⊢ (𝜑 → 𝑄 ⊆ (𝑁‘{𝑋, 𝑌}))
28	27	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑄 ⊆ (𝑁‘{𝑋, 𝑌}))
29	18, 28	eqsstrd 3953	. . . . . 6 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑁‘{𝑤}) ⊆ (𝑁‘{𝑋, 𝑌}))
30		eqid 2798	. . . . . . 7 ⊢ (LSubSp‘𝑊) = (LSubSp‘𝑊)
31		lveclmod 19871	. . . . . . . . 9 ⊢ (𝑊 ∈ LVec → 𝑊 ∈ LMod)
32	2, 31	syl 17	. . . . . . . 8 ⊢ (𝜑 → 𝑊 ∈ LMod)
33	32	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑊 ∈ LMod)
34	3, 30, 4, 32, 12, 14	lspprcl 19743	. . . . . . . 8 ⊢ (𝜑 → (𝑁‘{𝑋, 𝑌}) ∈ (LSubSp‘𝑊))
35	34	3ad2ant1 1130	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑁‘{𝑋, 𝑌}) ∈ (LSubSp‘𝑊))
36	16	eldifad 3893	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑤 ∈ 𝑉)
37	3, 30, 4, 33, 35, 36	lspsnel5 19760	. . . . . 6 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (𝑤 ∈ (𝑁‘{𝑋, 𝑌}) ↔ (𝑁‘{𝑤}) ⊆ (𝑁‘{𝑋, 𝑌})))
38	29, 37	mpbird 260	. . . . 5 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → 𝑤 ∈ (𝑁‘{𝑋, 𝑌}))
39	3, 10, 5, 4, 11, 13, 15, 22, 26, 38	lspfixed 19893	. . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑤 ∈ (𝑁‘{(𝑋 + 𝑧)}))
40		simpl1 1188	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝜑)
41	40, 2	syl 17	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑊 ∈ LVec)
42		simpl2 1189	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑤 ∈ (𝑉 ∖ { 0 }))
43	40, 32	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑊 ∈ LMod)
44	40, 12	syl 17	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑋 ∈ 𝑉)
45	14	snssd 4702	. . . . . . . . . . . 12 ⊢ (𝜑 → {𝑌} ⊆ 𝑉)
46	3, 4	lspssv 19748	. . . . . . . . . . . 12 ⊢ ((𝑊 ∈ LMod ∧ {𝑌} ⊆ 𝑉) → (𝑁‘{𝑌}) ⊆ 𝑉)
47	32, 45, 46	syl2anc 587	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑁‘{𝑌}) ⊆ 𝑉)
48	47	ssdifssd 4070	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑁‘{𝑌}) ∖ { 0 }) ⊆ 𝑉)
49	48	3ad2ant1 1130	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → ((𝑁‘{𝑌}) ∖ { 0 }) ⊆ 𝑉)
50	49	sselda 3915	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑧 ∈ 𝑉)
51	3, 10	lmodvacl 19641	. . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ 𝑋 ∈ 𝑉 ∧ 𝑧 ∈ 𝑉) → (𝑋 + 𝑧) ∈ 𝑉)
52	43, 44, 50, 51	syl3anc 1368	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → (𝑋 + 𝑧) ∈ 𝑉)
53	3, 5, 4, 41, 42, 52	lspsncmp 19881	. . . . . 6 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → ((𝑁‘{𝑤}) ⊆ (𝑁‘{(𝑋 + 𝑧)}) ↔ (𝑁‘{𝑤}) = (𝑁‘{(𝑋 + 𝑧)})))
54	3, 30, 4	lspsncl 19742	. . . . . . . 8 ⊢ ((𝑊 ∈ LMod ∧ (𝑋 + 𝑧) ∈ 𝑉) → (𝑁‘{(𝑋 + 𝑧)}) ∈ (LSubSp‘𝑊))
55	43, 52, 54	syl2anc 587	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → (𝑁‘{(𝑋 + 𝑧)}) ∈ (LSubSp‘𝑊))
56	42	eldifad 3893	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑤 ∈ 𝑉)
57	3, 30, 4, 43, 55, 56	lspsnel5 19760	. . . . . 6 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → (𝑤 ∈ (𝑁‘{(𝑋 + 𝑧)}) ↔ (𝑁‘{𝑤}) ⊆ (𝑁‘{(𝑋 + 𝑧)})))
58		simpl3 1190	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → 𝑄 = (𝑁‘{𝑤}))
59	58	eqeq1d 2800	. . . . . 6 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → (𝑄 = (𝑁‘{(𝑋 + 𝑧)}) ↔ (𝑁‘{𝑤}) = (𝑁‘{(𝑋 + 𝑧)})))
60	53, 57, 59	3bitr4rd 315	. . . . 5 ⊢ (((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) ∧ 𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })) → (𝑄 = (𝑁‘{(𝑋 + 𝑧)}) ↔ 𝑤 ∈ (𝑁‘{(𝑋 + 𝑧)})))
61	60	rexbidva 3255	. . . 4 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → (∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑄 = (𝑁‘{(𝑋 + 𝑧)}) ↔ ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑤 ∈ (𝑁‘{(𝑋 + 𝑧)})))
62	39, 61	mpbird 260	. . 3 ⊢ ((𝜑 ∧ 𝑤 ∈ (𝑉 ∖ { 0 }) ∧ 𝑄 = (𝑁‘{𝑤})) → ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑄 = (𝑁‘{(𝑋 + 𝑧)}))
63	62	rexlimdv3a 3245	. 2 ⊢ (𝜑 → (∃𝑤 ∈ (𝑉 ∖ { 0 })𝑄 = (𝑁‘{𝑤}) → ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑄 = (𝑁‘{(𝑋 + 𝑧)})))
64	9, 63	mpd 15	1 ⊢ (𝜑 → ∃𝑧 ∈ ((𝑁‘{𝑌}) ∖ { 0 })𝑄 = (𝑁‘{(𝑋 + 𝑧)}))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 ≠ wne 2987 ∃wrex 3107 ∖ cdif 3878 ⊆ wss 3881 {csn 4525 {cpr 4527 ‘cfv 6324 (class class class)co 7135 Basecbs 16475 +_gcplusg 16557 0_gc0g 16705 LModclmod 19627 LSubSpclss 19696 LSpanclspn 19736 LVecclvec 19867 LSAtomsclsa 36270

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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603

This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-tpos 7875 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-3 11689 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-mulr 16571 df-0g 16707 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-submnd 17949 df-grp 18098 df-minusg 18099 df-sbg 18100 df-subg 18268 df-cntz 18439 df-lsm 18753 df-cmn 18900 df-abl 18901 df-mgp 19233 df-ur 19245 df-ring 19292 df-oppr 19369 df-dvdsr 19387 df-unit 19388 df-invr 19418 df-drng 19497 df-lmod 19629 df-lss 19697 df-lsp 19737 df-lvec 19868 df-lsatoms 36272

This theorem is referenced by: hdmaprnlem3eN 39154

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