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Theorem lspexch 20120
Description: Exchange property for span of a pair. TODO: see if a version with Y,Z and X,Z reversed will shorten proofs (analogous to lspexchn1 20121 versus lspexchn2 20122); look for lspexch 20120 and prcom 4634 in same proof. TODO: would a hypothesis of ¬ 𝑋 ∈ (𝑁‘{𝑍}) instead of (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍}) be better overall? This would be shorter and also satisfy the 𝑋0 condition. Here and also lspindp* and all proofs affected by them (all in NM's mathbox); there are 58 hypotheses with the pattern as of 24-May-2015. (Contributed by NM, 11-Apr-2015.)
Hypotheses
Ref Expression
lspexch.v 𝑉 = (Base‘𝑊)
lspexch.o 0 = (0g𝑊)
lspexch.n 𝑁 = (LSpan‘𝑊)
lspexch.w (𝜑𝑊 ∈ LVec)
lspexch.x (𝜑𝑋 ∈ (𝑉 ∖ { 0 }))
lspexch.y (𝜑𝑌𝑉)
lspexch.z (𝜑𝑍𝑉)
lspexch.q (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍}))
lspexch.e (𝜑𝑋 ∈ (𝑁‘{𝑌, 𝑍}))
Assertion
Ref Expression
lspexch (𝜑𝑌 ∈ (𝑁‘{𝑋, 𝑍}))

Proof of Theorem lspexch
Dummy variables 𝑗 𝑘 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 lspexch.e . . 3 (𝜑𝑋 ∈ (𝑁‘{𝑌, 𝑍}))
2 lspexch.v . . . 4 𝑉 = (Base‘𝑊)
3 eqid 2736 . . . 4 (+g𝑊) = (+g𝑊)
4 eqid 2736 . . . 4 (Scalar‘𝑊) = (Scalar‘𝑊)
5 eqid 2736 . . . 4 (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊))
6 eqid 2736 . . . 4 ( ·𝑠𝑊) = ( ·𝑠𝑊)
7 lspexch.n . . . 4 𝑁 = (LSpan‘𝑊)
8 lspexch.w . . . . 5 (𝜑𝑊 ∈ LVec)
9 lveclmod 20097 . . . . 5 (𝑊 ∈ LVec → 𝑊 ∈ LMod)
108, 9syl 17 . . . 4 (𝜑𝑊 ∈ LMod)
11 lspexch.y . . . 4 (𝜑𝑌𝑉)
12 lspexch.z . . . 4 (𝜑𝑍𝑉)
132, 3, 4, 5, 6, 7, 10, 11, 12lspprel 20085 . . 3 (𝜑 → (𝑋 ∈ (𝑁‘{𝑌, 𝑍}) ↔ ∃𝑗 ∈ (Base‘(Scalar‘𝑊))∃𝑘 ∈ (Base‘(Scalar‘𝑊))𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))))
141, 13mpbid 235 . 2 (𝜑 → ∃𝑗 ∈ (Base‘(Scalar‘𝑊))∃𝑘 ∈ (Base‘(Scalar‘𝑊))𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)))
15 eqid 2736 . . . . . . . 8 (-g𝑊) = (-g𝑊)
16 eqid 2736 . . . . . . . 8 (invg‘(Scalar‘𝑊)) = (invg‘(Scalar‘𝑊))
1783ad2ant1 1135 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑊 ∈ LVec)
1817, 9syl 17 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑊 ∈ LMod)
19 simp2r 1202 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑘 ∈ (Base‘(Scalar‘𝑊)))
20 lspexch.x . . . . . . . . . 10 (𝜑𝑋 ∈ (𝑉 ∖ { 0 }))
21203ad2ant1 1135 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑋 ∈ (𝑉 ∖ { 0 }))
2221eldifad 3865 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑋𝑉)
23123ad2ant1 1135 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑍𝑉)
242, 3, 15, 6, 4, 5, 16, 18, 19, 22, 23lmodsubvs 19909 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑋(-g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)))
25 simp3 1140 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)))
2625eqcomd 2742 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = 𝑋)
27103ad2ant1 1135 . . . . . . . . . 10 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑊 ∈ LMod)
28 lmodgrp 19860 . . . . . . . . . 10 (𝑊 ∈ LMod → 𝑊 ∈ Grp)
2927, 28syl 17 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑊 ∈ Grp)
302, 4, 6, 5lmodvscl 19870 . . . . . . . . . 10 ((𝑊 ∈ LMod ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑍𝑉) → (𝑘( ·𝑠𝑊)𝑍) ∈ 𝑉)
3118, 19, 23, 30syl3anc 1373 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑘( ·𝑠𝑊)𝑍) ∈ 𝑉)
32 simp2l 1201 . . . . . . . . . 10 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑗 ∈ (Base‘(Scalar‘𝑊)))
33113ad2ant1 1135 . . . . . . . . . 10 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑌𝑉)
342, 4, 6, 5lmodvscl 19870 . . . . . . . . . 10 ((𝑊 ∈ LMod ∧ 𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑌𝑉) → (𝑗( ·𝑠𝑊)𝑌) ∈ 𝑉)
3518, 32, 33, 34syl3anc 1373 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑗( ·𝑠𝑊)𝑌) ∈ 𝑉)
362, 3, 15grpsubadd 18405 . . . . . . . . 9 ((𝑊 ∈ Grp ∧ (𝑋𝑉 ∧ (𝑘( ·𝑠𝑊)𝑍) ∈ 𝑉 ∧ (𝑗( ·𝑠𝑊)𝑌) ∈ 𝑉)) → ((𝑋(-g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑗( ·𝑠𝑊)𝑌) ↔ ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = 𝑋))
3729, 22, 31, 35, 36syl13anc 1374 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((𝑋(-g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑗( ·𝑠𝑊)𝑌) ↔ ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = 𝑋))
3826, 37mpbird 260 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑋(-g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑗( ·𝑠𝑊)𝑌))
3924, 38eqtr3d 2773 . . . . . 6 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) = (𝑗( ·𝑠𝑊)𝑌))
40 eqid 2736 . . . . . . 7 (0g‘(Scalar‘𝑊)) = (0g‘(Scalar‘𝑊))
41 eqid 2736 . . . . . . 7 (invr‘(Scalar‘𝑊)) = (invr‘(Scalar‘𝑊))
42 lspexch.q . . . . . . . . . 10 (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍}))
43423ad2ant1 1135 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍}))
44 lspexch.o . . . . . . . . . . . 12 0 = (0g𝑊)
4517adantr 484 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑊 ∈ LVec)
4623adantr 484 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑍𝑉)
4725adantr 484 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)))
48 oveq1 7198 . . . . . . . . . . . . . . . 16 (𝑗 = (0g‘(Scalar‘𝑊)) → (𝑗( ·𝑠𝑊)𝑌) = ((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌))
4948oveq1d 7206 . . . . . . . . . . . . . . 15 (𝑗 = (0g‘(Scalar‘𝑊)) → ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)))
502, 4, 6, 40, 44lmod0vs 19886 . . . . . . . . . . . . . . . . . 18 ((𝑊 ∈ LMod ∧ 𝑌𝑉) → ((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌) = 0 )
5118, 33, 50syl2anc 587 . . . . . . . . . . . . . . . . 17 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌) = 0 )
5251oveq1d 7206 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = ( 0 (+g𝑊)(𝑘( ·𝑠𝑊)𝑍)))
532, 3, 44lmod0vlid 19883 . . . . . . . . . . . . . . . . 17 ((𝑊 ∈ LMod ∧ (𝑘( ·𝑠𝑊)𝑍) ∈ 𝑉) → ( 0 (+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑘( ·𝑠𝑊)𝑍))
5418, 31, 53syl2anc 587 . . . . . . . . . . . . . . . 16 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ( 0 (+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑘( ·𝑠𝑊)𝑍))
5552, 54eqtrd 2771 . . . . . . . . . . . . . . 15 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((0g‘(Scalar‘𝑊))( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑘( ·𝑠𝑊)𝑍))
5649, 55sylan9eqr 2793 . . . . . . . . . . . . . 14 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) = (𝑘( ·𝑠𝑊)𝑍))
5747, 56eqtrd 2771 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑋 = (𝑘( ·𝑠𝑊)𝑍))
582, 6, 4, 5, 7, 18, 19, 23lspsneli 19992 . . . . . . . . . . . . . 14 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑘( ·𝑠𝑊)𝑍) ∈ (𝑁‘{𝑍}))
5958adantr 484 . . . . . . . . . . . . 13 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → (𝑘( ·𝑠𝑊)𝑍) ∈ (𝑁‘{𝑍}))
6057, 59eqeltrd 2831 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑋 ∈ (𝑁‘{𝑍}))
61 eldifsni 4689 . . . . . . . . . . . . . 14 (𝑋 ∈ (𝑉 ∖ { 0 }) → 𝑋0 )
6221, 61syl 17 . . . . . . . . . . . . 13 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑋0 )
6362adantr 484 . . . . . . . . . . . 12 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → 𝑋0 )
642, 44, 7, 45, 46, 60, 63lspsneleq 20106 . . . . . . . . . . 11 (((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) ∧ 𝑗 = (0g‘(Scalar‘𝑊))) → (𝑁‘{𝑋}) = (𝑁‘{𝑍}))
6564ex 416 . . . . . . . . . 10 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑗 = (0g‘(Scalar‘𝑊)) → (𝑁‘{𝑋}) = (𝑁‘{𝑍})))
6665necon3d 2953 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((𝑁‘{𝑋}) ≠ (𝑁‘{𝑍}) → 𝑗 ≠ (0g‘(Scalar‘𝑊))))
6743, 66mpd 15 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑗 ≠ (0g‘(Scalar‘𝑊)))
68 eldifsn 4686 . . . . . . . 8 (𝑗 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0g‘(Scalar‘𝑊))}) ↔ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑗 ≠ (0g‘(Scalar‘𝑊))))
6932, 67, 68sylanbrc 586 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑗 ∈ ((Base‘(Scalar‘𝑊)) ∖ {(0g‘(Scalar‘𝑊))}))
704lmodfgrp 19862 . . . . . . . . . . 11 (𝑊 ∈ LMod → (Scalar‘𝑊) ∈ Grp)
7127, 70syl 17 . . . . . . . . . 10 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (Scalar‘𝑊) ∈ Grp)
725, 16grpinvcl 18369 . . . . . . . . . 10 (((Scalar‘𝑊) ∈ Grp ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) → ((invg‘(Scalar‘𝑊))‘𝑘) ∈ (Base‘(Scalar‘𝑊)))
7371, 19, 72syl2anc 587 . . . . . . . . 9 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((invg‘(Scalar‘𝑊))‘𝑘) ∈ (Base‘(Scalar‘𝑊)))
742, 4, 6, 5lmodvscl 19870 . . . . . . . . 9 ((𝑊 ∈ LMod ∧ ((invg‘(Scalar‘𝑊))‘𝑘) ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑍𝑉) → (((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍) ∈ 𝑉)
7518, 73, 23, 74syl3anc 1373 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍) ∈ 𝑉)
762, 3lmodvacl 19867 . . . . . . . 8 ((𝑊 ∈ LMod ∧ 𝑋𝑉 ∧ (((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍) ∈ 𝑉) → (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) ∈ 𝑉)
7718, 22, 75, 76syl3anc 1373 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) ∈ 𝑉)
782, 6, 4, 5, 40, 41, 17, 69, 77, 33lvecinv 20104 . . . . . 6 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) = (𝑗( ·𝑠𝑊)𝑌) ↔ 𝑌 = (((invr‘(Scalar‘𝑊))‘𝑗)( ·𝑠𝑊)(𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)))))
7939, 78mpbid 235 . . . . 5 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑌 = (((invr‘(Scalar‘𝑊))‘𝑗)( ·𝑠𝑊)(𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍))))
80 eqid 2736 . . . . . . 7 (LSubSp‘𝑊) = (LSubSp‘𝑊)
812, 80, 7, 18, 22, 23lspprcl 19969 . . . . . 6 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑁‘{𝑋, 𝑍}) ∈ (LSubSp‘𝑊))
824lvecdrng 20096 . . . . . . . 8 (𝑊 ∈ LVec → (Scalar‘𝑊) ∈ DivRing)
8317, 82syl 17 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (Scalar‘𝑊) ∈ DivRing)
845, 40, 41drnginvrcl 19738 . . . . . . 7 (((Scalar‘𝑊) ∈ DivRing ∧ 𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑗 ≠ (0g‘(Scalar‘𝑊))) → ((invr‘(Scalar‘𝑊))‘𝑗) ∈ (Base‘(Scalar‘𝑊)))
8583, 32, 67, 84syl3anc 1373 . . . . . 6 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((invr‘(Scalar‘𝑊))‘𝑗) ∈ (Base‘(Scalar‘𝑊)))
86 eqid 2736 . . . . . . . . . 10 (1r‘(Scalar‘𝑊)) = (1r‘(Scalar‘𝑊))
872, 4, 6, 86lmodvs1 19881 . . . . . . . . 9 ((𝑊 ∈ LMod ∧ 𝑋𝑉) → ((1r‘(Scalar‘𝑊))( ·𝑠𝑊)𝑋) = 𝑋)
8818, 22, 87syl2anc 587 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → ((1r‘(Scalar‘𝑊))( ·𝑠𝑊)𝑋) = 𝑋)
8988oveq1d 7206 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((1r‘(Scalar‘𝑊))( ·𝑠𝑊)𝑋)(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) = (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)))
904lmodring 19861 . . . . . . . . 9 (𝑊 ∈ LMod → (Scalar‘𝑊) ∈ Ring)
915, 86ringidcl 19540 . . . . . . . . 9 ((Scalar‘𝑊) ∈ Ring → (1r‘(Scalar‘𝑊)) ∈ (Base‘(Scalar‘𝑊)))
9218, 90, 913syl 18 . . . . . . . 8 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (1r‘(Scalar‘𝑊)) ∈ (Base‘(Scalar‘𝑊)))
932, 3, 6, 4, 5, 7, 18, 92, 73, 22, 23lsppreli 20081 . . . . . . 7 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((1r‘(Scalar‘𝑊))( ·𝑠𝑊)𝑋)(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) ∈ (𝑁‘{𝑋, 𝑍}))
9489, 93eqeltrrd 2832 . . . . . 6 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) ∈ (𝑁‘{𝑋, 𝑍}))
954, 6, 5, 80lssvscl 19946 . . . . . 6 (((𝑊 ∈ LMod ∧ (𝑁‘{𝑋, 𝑍}) ∈ (LSubSp‘𝑊)) ∧ (((invr‘(Scalar‘𝑊))‘𝑗) ∈ (Base‘(Scalar‘𝑊)) ∧ (𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍)) ∈ (𝑁‘{𝑋, 𝑍}))) → (((invr‘(Scalar‘𝑊))‘𝑗)( ·𝑠𝑊)(𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍))) ∈ (𝑁‘{𝑋, 𝑍}))
9618, 81, 85, 94, 95syl22anc 839 . . . . 5 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → (((invr‘(Scalar‘𝑊))‘𝑗)( ·𝑠𝑊)(𝑋(+g𝑊)(((invg‘(Scalar‘𝑊))‘𝑘)( ·𝑠𝑊)𝑍))) ∈ (𝑁‘{𝑋, 𝑍}))
9779, 96eqeltrd 2831 . . . 4 ((𝜑 ∧ (𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) ∧ 𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍))) → 𝑌 ∈ (𝑁‘{𝑋, 𝑍}))
98973exp 1121 . . 3 (𝜑 → ((𝑗 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑘 ∈ (Base‘(Scalar‘𝑊))) → (𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) → 𝑌 ∈ (𝑁‘{𝑋, 𝑍}))))
9998rexlimdvv 3202 . 2 (𝜑 → (∃𝑗 ∈ (Base‘(Scalar‘𝑊))∃𝑘 ∈ (Base‘(Scalar‘𝑊))𝑋 = ((𝑗( ·𝑠𝑊)𝑌)(+g𝑊)(𝑘( ·𝑠𝑊)𝑍)) → 𝑌 ∈ (𝑁‘{𝑋, 𝑍})))
10014, 99mpd 15 1 (𝜑𝑌 ∈ (𝑁‘{𝑋, 𝑍}))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  w3a 1089   = wceq 1543  wcel 2112  wne 2932  wrex 3052  cdif 3850  {csn 4527  {cpr 4529  cfv 6358  (class class class)co 7191  Basecbs 16666  +gcplusg 16749  Scalarcsca 16752   ·𝑠 cvsca 16753  0gc0g 16898  Grpcgrp 18319  invgcminusg 18320  -gcsg 18321  1rcur 19470  Ringcrg 19516  invrcinvr 19643  DivRingcdr 19721  LModclmod 19853  LSubSpclss 19922  LSpanclspn 19962  LVecclvec 20093
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2018  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2160  ax-12 2177  ax-ext 2708  ax-rep 5164  ax-sep 5177  ax-nul 5184  ax-pow 5243  ax-pr 5307  ax-un 7501  ax-cnex 10750  ax-resscn 10751  ax-1cn 10752  ax-icn 10753  ax-addcl 10754  ax-addrcl 10755  ax-mulcl 10756  ax-mulrcl 10757  ax-mulcom 10758  ax-addass 10759  ax-mulass 10760  ax-distr 10761  ax-i2m1 10762  ax-1ne0 10763  ax-1rid 10764  ax-rnegex 10765  ax-rrecex 10766  ax-cnre 10767  ax-pre-lttri 10768  ax-pre-lttrn 10769  ax-pre-ltadd 10770  ax-pre-mulgt0 10771
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3or 1090  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2728  df-clel 2809  df-nfc 2879  df-ne 2933  df-nel 3037  df-ral 3056  df-rex 3057  df-reu 3058  df-rmo 3059  df-rab 3060  df-v 3400  df-sbc 3684  df-csb 3799  df-dif 3856  df-un 3858  df-in 3860  df-ss 3870  df-pss 3872  df-nul 4224  df-if 4426  df-pw 4501  df-sn 4528  df-pr 4530  df-tp 4532  df-op 4534  df-uni 4806  df-int 4846  df-iun 4892  df-br 5040  df-opab 5102  df-mpt 5121  df-tr 5147  df-id 5440  df-eprel 5445  df-po 5453  df-so 5454  df-fr 5494  df-we 5496  df-xp 5542  df-rel 5543  df-cnv 5544  df-co 5545  df-dm 5546  df-rn 5547  df-res 5548  df-ima 5549  df-pred 6140  df-ord 6194  df-on 6195  df-lim 6196  df-suc 6197  df-iota 6316  df-fun 6360  df-fn 6361  df-f 6362  df-f1 6363  df-fo 6364  df-f1o 6365  df-fv 6366  df-riota 7148  df-ov 7194  df-oprab 7195  df-mpo 7196  df-om 7623  df-1st 7739  df-2nd 7740  df-tpos 7946  df-wrecs 8025  df-recs 8086  df-rdg 8124  df-er 8369  df-en 8605  df-dom 8606  df-sdom 8607  df-pnf 10834  df-mnf 10835  df-xr 10836  df-ltxr 10837  df-le 10838  df-sub 11029  df-neg 11030  df-nn 11796  df-2 11858  df-3 11859  df-ndx 16669  df-slot 16670  df-base 16672  df-sets 16673  df-ress 16674  df-plusg 16762  df-mulr 16763  df-0g 16900  df-mgm 18068  df-sgrp 18117  df-mnd 18128  df-submnd 18173  df-grp 18322  df-minusg 18323  df-sbg 18324  df-subg 18494  df-cntz 18665  df-lsm 18979  df-cmn 19126  df-abl 19127  df-mgp 19459  df-ur 19471  df-ring 19518  df-oppr 19595  df-dvdsr 19613  df-unit 19614  df-invr 19644  df-drng 19723  df-lmod 19855  df-lss 19923  df-lsp 19963  df-lvec 20094
This theorem is referenced by:  lspexchn1  20121  lspindp1  20124  mapdh8ab  39477  mapdh8ad  39479  mapdh8b  39480  mapdh8c  39481  mapdh8e  39484
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