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Theorem baerlem5abmN 36473
Description: An equality that holds when 𝑋, 𝑌, 𝑍 are independent (non-colinear) vectors. Subtraction versions of first and second equations of part (5) in [Baer] p. 46, conjoined to share commonality in their proofs. TODO: Delete if not be needed. (Contributed by NM, 24-May-2015.) (New usage is discouraged.)
Hypotheses
Ref Expression
baerlem3.v 𝑉 = (Base‘𝑊)
baerlem3.m = (-g𝑊)
baerlem3.o 0 = (0g𝑊)
baerlem3.s = (LSSum‘𝑊)
baerlem3.n 𝑁 = (LSpan‘𝑊)
baerlem3.w (𝜑𝑊 ∈ LVec)
baerlem3.x (𝜑𝑋𝑉)
baerlem3.c (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍}))
baerlem3.d (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍}))
baerlem3.y (𝜑𝑌 ∈ (𝑉 ∖ { 0 }))
baerlem3.z (𝜑𝑍 ∈ (𝑉 ∖ { 0 }))
baerlem5a.p + = (+g𝑊)
Assertion
Ref Expression
baerlem5abmN (𝜑 → ((𝑁‘{(𝑋 (𝑌 𝑍))}) = (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) (𝑁‘{𝑌}))) ∧ (𝑁‘{(𝑌 𝑍)}) = (((𝑁‘{𝑌}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 (𝑌 𝑍))}) (𝑁‘{𝑋})))))

Proof of Theorem baerlem5abmN
StepHypRef Expression
1 baerlem3.y . . . . . . . 8 (𝜑𝑌 ∈ (𝑉 ∖ { 0 }))
21eldifad 3572 . . . . . . 7 (𝜑𝑌𝑉)
3 baerlem3.z . . . . . . . 8 (𝜑𝑍 ∈ (𝑉 ∖ { 0 }))
43eldifad 3572 . . . . . . 7 (𝜑𝑍𝑉)
5 baerlem3.v . . . . . . . 8 𝑉 = (Base‘𝑊)
6 baerlem5a.p . . . . . . . 8 + = (+g𝑊)
7 eqid 2626 . . . . . . . 8 (invg𝑊) = (invg𝑊)
8 baerlem3.m . . . . . . . 8 = (-g𝑊)
95, 6, 7, 8grpsubval 17381 . . . . . . 7 ((𝑌𝑉𝑍𝑉) → (𝑌 𝑍) = (𝑌 + ((invg𝑊)‘𝑍)))
102, 4, 9syl2anc 692 . . . . . 6 (𝜑 → (𝑌 𝑍) = (𝑌 + ((invg𝑊)‘𝑍)))
1110oveq2d 6621 . . . . 5 (𝜑 → (𝑋 (𝑌 𝑍)) = (𝑋 (𝑌 + ((invg𝑊)‘𝑍))))
1211sneqd 4165 . . . 4 (𝜑 → {(𝑋 (𝑌 𝑍))} = {(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))})
1312fveq2d 6154 . . 3 (𝜑 → (𝑁‘{(𝑋 (𝑌 𝑍))}) = (𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}))
14 baerlem3.o . . . 4 0 = (0g𝑊)
15 baerlem3.s . . . 4 = (LSSum‘𝑊)
16 baerlem3.n . . . 4 𝑁 = (LSpan‘𝑊)
17 baerlem3.w . . . 4 (𝜑𝑊 ∈ LVec)
18 baerlem3.x . . . 4 (𝜑𝑋𝑉)
19 lveclmod 19020 . . . . . . 7 (𝑊 ∈ LVec → 𝑊 ∈ LMod)
2017, 19syl 17 . . . . . 6 (𝜑𝑊 ∈ LMod)
215, 7lmodvnegcl 18820 . . . . . 6 ((𝑊 ∈ LMod ∧ 𝑍𝑉) → ((invg𝑊)‘𝑍) ∈ 𝑉)
2220, 4, 21syl2anc 692 . . . . 5 (𝜑 → ((invg𝑊)‘𝑍) ∈ 𝑉)
23 eqid 2626 . . . . . . 7 (LSubSp‘𝑊) = (LSubSp‘𝑊)
245, 23, 16, 20, 2, 4lspprcl 18892 . . . . . . 7 (𝜑 → (𝑁‘{𝑌, 𝑍}) ∈ (LSubSp‘𝑊))
25 baerlem3.c . . . . . . 7 (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, 𝑍}))
265, 14, 23, 20, 24, 18, 25lssneln0 18866 . . . . . 6 (𝜑𝑋 ∈ (𝑉 ∖ { 0 }))
275, 16, 17, 18, 2, 4, 25lspindpi 19046 . . . . . . 7 (𝜑 → ((𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}) ∧ (𝑁‘{𝑋}) ≠ (𝑁‘{𝑍})))
2827simpld 475 . . . . . 6 (𝜑 → (𝑁‘{𝑋}) ≠ (𝑁‘{𝑌}))
295, 14, 16, 17, 26, 2, 28lspsnne1 19031 . . . . 5 (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌}))
30 baerlem3.d . . . . . . . . 9 (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{𝑍}))
3130necomd 2851 . . . . . . . 8 (𝜑 → (𝑁‘{𝑍}) ≠ (𝑁‘{𝑌}))
325, 14, 16, 17, 3, 2, 31lspsnne1 19031 . . . . . . 7 (𝜑 → ¬ 𝑍 ∈ (𝑁‘{𝑌}))
335, 16, 17, 18, 4, 2, 32, 25lspexchn2 19045 . . . . . 6 (𝜑 → ¬ 𝑍 ∈ (𝑁‘{𝑌, 𝑋}))
34 lmodgrp 18786 . . . . . . . . . 10 (𝑊 ∈ LMod → 𝑊 ∈ Grp)
3517, 19, 343syl 18 . . . . . . . . 9 (𝜑𝑊 ∈ Grp)
3635adantr 481 . . . . . . . 8 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → 𝑊 ∈ Grp)
374adantr 481 . . . . . . . 8 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → 𝑍𝑉)
385, 7grpinvinv 17398 . . . . . . . 8 ((𝑊 ∈ Grp ∧ 𝑍𝑉) → ((invg𝑊)‘((invg𝑊)‘𝑍)) = 𝑍)
3936, 37, 38syl2anc 692 . . . . . . 7 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → ((invg𝑊)‘((invg𝑊)‘𝑍)) = 𝑍)
4020adantr 481 . . . . . . . 8 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → 𝑊 ∈ LMod)
415, 23, 16, 20, 2, 18lspprcl 18892 . . . . . . . . 9 (𝜑 → (𝑁‘{𝑌, 𝑋}) ∈ (LSubSp‘𝑊))
4241adantr 481 . . . . . . . 8 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → (𝑁‘{𝑌, 𝑋}) ∈ (LSubSp‘𝑊))
43 simpr 477 . . . . . . . 8 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋}))
4423, 7lssvnegcl 18870 . . . . . . . 8 ((𝑊 ∈ LMod ∧ (𝑁‘{𝑌, 𝑋}) ∈ (LSubSp‘𝑊) ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → ((invg𝑊)‘((invg𝑊)‘𝑍)) ∈ (𝑁‘{𝑌, 𝑋}))
4540, 42, 43, 44syl3anc 1323 . . . . . . 7 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → ((invg𝑊)‘((invg𝑊)‘𝑍)) ∈ (𝑁‘{𝑌, 𝑋}))
4639, 45eqeltrrd 2705 . . . . . 6 ((𝜑 ∧ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋})) → 𝑍 ∈ (𝑁‘{𝑌, 𝑋}))
4733, 46mtand 690 . . . . 5 (𝜑 → ¬ ((invg𝑊)‘𝑍) ∈ (𝑁‘{𝑌, 𝑋}))
485, 16, 17, 22, 18, 2, 29, 47lspexchn2 19045 . . . 4 (𝜑 → ¬ 𝑋 ∈ (𝑁‘{𝑌, ((invg𝑊)‘𝑍)}))
495, 7, 16lspsnneg 18920 . . . . . 6 ((𝑊 ∈ LMod ∧ 𝑍𝑉) → (𝑁‘{((invg𝑊)‘𝑍)}) = (𝑁‘{𝑍}))
5020, 4, 49syl2anc 692 . . . . 5 (𝜑 → (𝑁‘{((invg𝑊)‘𝑍)}) = (𝑁‘{𝑍}))
5130, 50neeqtrrd 2870 . . . 4 (𝜑 → (𝑁‘{𝑌}) ≠ (𝑁‘{((invg𝑊)‘𝑍)}))
525, 14, 7grpinvnzcl 17403 . . . . 5 ((𝑊 ∈ Grp ∧ 𝑍 ∈ (𝑉 ∖ { 0 })) → ((invg𝑊)‘𝑍) ∈ (𝑉 ∖ { 0 }))
5335, 3, 52syl2anc 692 . . . 4 (𝜑 → ((invg𝑊)‘𝑍) ∈ (𝑉 ∖ { 0 }))
545, 8, 14, 15, 16, 17, 18, 48, 51, 1, 53, 6baerlem5a 36469 . . 3 (𝜑 → (𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}) = (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{((invg𝑊)‘𝑍)})) ∩ ((𝑁‘{(𝑋 ((invg𝑊)‘𝑍))}) (𝑁‘{𝑌}))))
5550oveq2d 6621 . . . 4 (𝜑 → ((𝑁‘{(𝑋 𝑌)}) (𝑁‘{((invg𝑊)‘𝑍)})) = ((𝑁‘{(𝑋 𝑌)}) (𝑁‘{𝑍})))
565, 6, 8, 7, 35, 18, 4grpsubinv 17404 . . . . . . 7 (𝜑 → (𝑋 ((invg𝑊)‘𝑍)) = (𝑋 + 𝑍))
5756sneqd 4165 . . . . . 6 (𝜑 → {(𝑋 ((invg𝑊)‘𝑍))} = {(𝑋 + 𝑍)})
5857fveq2d 6154 . . . . 5 (𝜑 → (𝑁‘{(𝑋 ((invg𝑊)‘𝑍))}) = (𝑁‘{(𝑋 + 𝑍)}))
5958oveq1d 6620 . . . 4 (𝜑 → ((𝑁‘{(𝑋 ((invg𝑊)‘𝑍))}) (𝑁‘{𝑌})) = ((𝑁‘{(𝑋 + 𝑍)}) (𝑁‘{𝑌})))
6055, 59ineq12d 3798 . . 3 (𝜑 → (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{((invg𝑊)‘𝑍)})) ∩ ((𝑁‘{(𝑋 ((invg𝑊)‘𝑍))}) (𝑁‘{𝑌}))) = (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) (𝑁‘{𝑌}))))
6113, 54, 603eqtrd 2664 . 2 (𝜑 → (𝑁‘{(𝑋 (𝑌 𝑍))}) = (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) (𝑁‘{𝑌}))))
6210sneqd 4165 . . . 4 (𝜑 → {(𝑌 𝑍)} = {(𝑌 + ((invg𝑊)‘𝑍))})
6362fveq2d 6154 . . 3 (𝜑 → (𝑁‘{(𝑌 𝑍)}) = (𝑁‘{(𝑌 + ((invg𝑊)‘𝑍))}))
645, 8, 14, 15, 16, 17, 18, 48, 51, 1, 53, 6baerlem5b 36470 . . 3 (𝜑 → (𝑁‘{(𝑌 + ((invg𝑊)‘𝑍))}) = (((𝑁‘{𝑌}) (𝑁‘{((invg𝑊)‘𝑍)})) ∩ ((𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}) (𝑁‘{𝑋}))))
6550oveq2d 6621 . . . 4 (𝜑 → ((𝑁‘{𝑌}) (𝑁‘{((invg𝑊)‘𝑍)})) = ((𝑁‘{𝑌}) (𝑁‘{𝑍})))
6610eqcomd 2632 . . . . . . . 8 (𝜑 → (𝑌 + ((invg𝑊)‘𝑍)) = (𝑌 𝑍))
6766oveq2d 6621 . . . . . . 7 (𝜑 → (𝑋 (𝑌 + ((invg𝑊)‘𝑍))) = (𝑋 (𝑌 𝑍)))
6867sneqd 4165 . . . . . 6 (𝜑 → {(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))} = {(𝑋 (𝑌 𝑍))})
6968fveq2d 6154 . . . . 5 (𝜑 → (𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}) = (𝑁‘{(𝑋 (𝑌 𝑍))}))
7069oveq1d 6620 . . . 4 (𝜑 → ((𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}) (𝑁‘{𝑋})) = ((𝑁‘{(𝑋 (𝑌 𝑍))}) (𝑁‘{𝑋})))
7165, 70ineq12d 3798 . . 3 (𝜑 → (((𝑁‘{𝑌}) (𝑁‘{((invg𝑊)‘𝑍)})) ∩ ((𝑁‘{(𝑋 (𝑌 + ((invg𝑊)‘𝑍)))}) (𝑁‘{𝑋}))) = (((𝑁‘{𝑌}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 (𝑌 𝑍))}) (𝑁‘{𝑋}))))
7263, 64, 713eqtrd 2664 . 2 (𝜑 → (𝑁‘{(𝑌 𝑍)}) = (((𝑁‘{𝑌}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 (𝑌 𝑍))}) (𝑁‘{𝑋}))))
7361, 72jca 554 1 (𝜑 → ((𝑁‘{(𝑋 (𝑌 𝑍))}) = (((𝑁‘{(𝑋 𝑌)}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 + 𝑍)}) (𝑁‘{𝑌}))) ∧ (𝑁‘{(𝑌 𝑍)}) = (((𝑁‘{𝑌}) (𝑁‘{𝑍})) ∩ ((𝑁‘{(𝑋 (𝑌 𝑍))}) (𝑁‘{𝑋})))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 384   = wceq 1480  wcel 1992  wne 2796  cdif 3557  cin 3559  {csn 4153  {cpr 4155  cfv 5850  (class class class)co 6605  Basecbs 15776  +gcplusg 15857  0gc0g 16016  Grpcgrp 17338  invgcminusg 17339  -gcsg 17340  LSSumclsm 17965  LModclmod 18779  LSubSpclss 18846  LSpanclspn 18885  LVecclvec 19016
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1841  ax-6 1890  ax-7 1937  ax-8 1994  ax-9 2001  ax-10 2021  ax-11 2036  ax-12 2049  ax-13 2250  ax-ext 2606  ax-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6903  ax-cnex 9937  ax-resscn 9938  ax-1cn 9939  ax-icn 9940  ax-addcl 9941  ax-addrcl 9942  ax-mulcl 9943  ax-mulrcl 9944  ax-mulcom 9945  ax-addass 9946  ax-mulass 9947  ax-distr 9948  ax-i2m1 9949  ax-1ne0 9950  ax-1rid 9951  ax-rnegex 9952  ax-rrecex 9953  ax-cnre 9954  ax-pre-lttri 9955  ax-pre-lttrn 9956  ax-pre-ltadd 9957  ax-pre-mulgt0 9958
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1883  df-eu 2478  df-mo 2479  df-clab 2613  df-cleq 2619  df-clel 2622  df-nfc 2756  df-ne 2797  df-nel 2900  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3193  df-sbc 3423  df-csb 3520  df-dif 3563  df-un 3565  df-in 3567  df-ss 3574  df-pss 3576  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-tp 4158  df-op 4160  df-uni 4408  df-int 4446  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-tr 4718  df-eprel 4990  df-id 4994  df-po 5000  df-so 5001  df-fr 5038  df-we 5040  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-pred 5642  df-ord 5688  df-on 5689  df-lim 5690  df-suc 5691  df-iota 5813  df-fun 5852  df-fn 5853  df-f 5854  df-f1 5855  df-fo 5856  df-f1o 5857  df-fv 5858  df-riota 6566  df-ov 6608  df-oprab 6609  df-mpt2 6610  df-om 7014  df-1st 7116  df-2nd 7117  df-tpos 7298  df-wrecs 7353  df-recs 7414  df-rdg 7452  df-er 7688  df-en 7901  df-dom 7902  df-sdom 7903  df-pnf 10021  df-mnf 10022  df-xr 10023  df-ltxr 10024  df-le 10025  df-sub 10213  df-neg 10214  df-nn 10966  df-2 11024  df-3 11025  df-ndx 15779  df-slot 15780  df-base 15781  df-sets 15782  df-ress 15783  df-plusg 15870  df-mulr 15871  df-0g 16018  df-mgm 17158  df-sgrp 17200  df-mnd 17211  df-submnd 17252  df-grp 17341  df-minusg 17342  df-sbg 17343  df-subg 17507  df-cntz 17666  df-lsm 17967  df-cmn 18111  df-abl 18112  df-mgp 18406  df-ur 18418  df-ring 18465  df-oppr 18539  df-dvdsr 18557  df-unit 18558  df-invr 18588  df-drng 18665  df-lmod 18781  df-lss 18847  df-lsp 18886  df-lvec 19017
This theorem is referenced by: (None)
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