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Theorem mdetfval 21195
Description: First substitution for the determinant definition. (Contributed by Stefan O'Rear, 9-Sep-2015.) (Revised by SO, 9-Jul-2018.)
Hypotheses
Ref Expression
mdetfval.d 𝐷 = (𝑁 maDet 𝑅)
mdetfval.a 𝐴 = (𝑁 Mat 𝑅)
mdetfval.b 𝐵 = (Base‘𝐴)
mdetfval.p 𝑃 = (Base‘(SymGrp‘𝑁))
mdetfval.y 𝑌 = (ℤRHom‘𝑅)
mdetfval.s 𝑆 = (pmSgn‘𝑁)
mdetfval.t · = (.r𝑅)
mdetfval.u 𝑈 = (mulGrp‘𝑅)
Assertion
Ref Expression
mdetfval 𝐷 = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))))))
Distinct variable groups:   𝐵,𝑚   𝑚,𝑝,𝑥,𝑁   𝑃,𝑚   𝑅,𝑚,𝑝,𝑥   𝑆,𝑚   · ,𝑚   𝑈,𝑚   𝑚,𝑌
Allowed substitution hints:   𝐴(𝑥,𝑚,𝑝)   𝐵(𝑥,𝑝)   𝐷(𝑥,𝑚,𝑝)   𝑃(𝑥,𝑝)   𝑆(𝑥,𝑝)   · (𝑥,𝑝)   𝑈(𝑥,𝑝)   𝑌(𝑥,𝑝)

Proof of Theorem mdetfval
Dummy variables 𝑦 𝑧 𝑛 𝑟 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 mdetfval.d . 2 𝐷 = (𝑁 maDet 𝑅)
2 oveq12 7158 . . . . . . . 8 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑛 Mat 𝑟) = (𝑁 Mat 𝑅))
3 mdetfval.a . . . . . . . 8 𝐴 = (𝑁 Mat 𝑅)
42, 3syl6eqr 2877 . . . . . . 7 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑛 Mat 𝑟) = 𝐴)
54fveq2d 6665 . . . . . 6 ((𝑛 = 𝑁𝑟 = 𝑅) → (Base‘(𝑛 Mat 𝑟)) = (Base‘𝐴))
6 mdetfval.b . . . . . 6 𝐵 = (Base‘𝐴)
75, 6syl6eqr 2877 . . . . 5 ((𝑛 = 𝑁𝑟 = 𝑅) → (Base‘(𝑛 Mat 𝑟)) = 𝐵)
8 simpr 488 . . . . . 6 ((𝑛 = 𝑁𝑟 = 𝑅) → 𝑟 = 𝑅)
9 simpl 486 . . . . . . . . . 10 ((𝑛 = 𝑁𝑟 = 𝑅) → 𝑛 = 𝑁)
109fveq2d 6665 . . . . . . . . 9 ((𝑛 = 𝑁𝑟 = 𝑅) → (SymGrp‘𝑛) = (SymGrp‘𝑁))
1110fveq2d 6665 . . . . . . . 8 ((𝑛 = 𝑁𝑟 = 𝑅) → (Base‘(SymGrp‘𝑛)) = (Base‘(SymGrp‘𝑁)))
12 mdetfval.p . . . . . . . 8 𝑃 = (Base‘(SymGrp‘𝑁))
1311, 12syl6eqr 2877 . . . . . . 7 ((𝑛 = 𝑁𝑟 = 𝑅) → (Base‘(SymGrp‘𝑛)) = 𝑃)
14 fveq2 6661 . . . . . . . . . 10 (𝑟 = 𝑅 → (.r𝑟) = (.r𝑅))
1514adantl 485 . . . . . . . . 9 ((𝑛 = 𝑁𝑟 = 𝑅) → (.r𝑟) = (.r𝑅))
16 mdetfval.t . . . . . . . . 9 · = (.r𝑅)
1715, 16syl6eqr 2877 . . . . . . . 8 ((𝑛 = 𝑁𝑟 = 𝑅) → (.r𝑟) = · )
188fveq2d 6665 . . . . . . . . . . 11 ((𝑛 = 𝑁𝑟 = 𝑅) → (ℤRHom‘𝑟) = (ℤRHom‘𝑅))
19 mdetfval.y . . . . . . . . . . 11 𝑌 = (ℤRHom‘𝑅)
2018, 19syl6eqr 2877 . . . . . . . . . 10 ((𝑛 = 𝑁𝑟 = 𝑅) → (ℤRHom‘𝑟) = 𝑌)
21 fveq2 6661 . . . . . . . . . . . 12 (𝑛 = 𝑁 → (pmSgn‘𝑛) = (pmSgn‘𝑁))
2221adantr 484 . . . . . . . . . . 11 ((𝑛 = 𝑁𝑟 = 𝑅) → (pmSgn‘𝑛) = (pmSgn‘𝑁))
23 mdetfval.s . . . . . . . . . . 11 𝑆 = (pmSgn‘𝑁)
2422, 23syl6eqr 2877 . . . . . . . . . 10 ((𝑛 = 𝑁𝑟 = 𝑅) → (pmSgn‘𝑛) = 𝑆)
2520, 24coeq12d 5722 . . . . . . . . 9 ((𝑛 = 𝑁𝑟 = 𝑅) → ((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛)) = (𝑌𝑆))
2625fveq1d 6663 . . . . . . . 8 ((𝑛 = 𝑁𝑟 = 𝑅) → (((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝) = ((𝑌𝑆)‘𝑝))
27 fveq2 6661 . . . . . . . . . . 11 (𝑟 = 𝑅 → (mulGrp‘𝑟) = (mulGrp‘𝑅))
2827adantl 485 . . . . . . . . . 10 ((𝑛 = 𝑁𝑟 = 𝑅) → (mulGrp‘𝑟) = (mulGrp‘𝑅))
29 mdetfval.u . . . . . . . . . 10 𝑈 = (mulGrp‘𝑅)
3028, 29syl6eqr 2877 . . . . . . . . 9 ((𝑛 = 𝑁𝑟 = 𝑅) → (mulGrp‘𝑟) = 𝑈)
319mpteq1d 5141 . . . . . . . . 9 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥)) = (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))
3230, 31oveq12d 7167 . . . . . . . 8 ((𝑛 = 𝑁𝑟 = 𝑅) → ((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥))) = (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))
3317, 26, 32oveq123d 7170 . . . . . . 7 ((𝑛 = 𝑁𝑟 = 𝑅) → ((((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝)(.r𝑟)((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥)))) = (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))))
3413, 33mpteq12dv 5137 . . . . . 6 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑝 ∈ (Base‘(SymGrp‘𝑛)) ↦ ((((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝)(.r𝑟)((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥))))) = (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))
358, 34oveq12d 7167 . . . . 5 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑟 Σg (𝑝 ∈ (Base‘(SymGrp‘𝑛)) ↦ ((((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝)(.r𝑟)((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥)))))) = (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))))))
367, 35mpteq12dv 5137 . . . 4 ((𝑛 = 𝑁𝑟 = 𝑅) → (𝑚 ∈ (Base‘(𝑛 Mat 𝑟)) ↦ (𝑟 Σg (𝑝 ∈ (Base‘(SymGrp‘𝑛)) ↦ ((((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝)(.r𝑟)((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥))))))) = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))))
37 df-mdet 21194 . . . 4 maDet = (𝑛 ∈ V, 𝑟 ∈ V ↦ (𝑚 ∈ (Base‘(𝑛 Mat 𝑟)) ↦ (𝑟 Σg (𝑝 ∈ (Base‘(SymGrp‘𝑛)) ↦ ((((ℤRHom‘𝑟) ∘ (pmSgn‘𝑛))‘𝑝)(.r𝑟)((mulGrp‘𝑟) Σg (𝑥𝑛 ↦ ((𝑝𝑥)𝑚𝑥))))))))
386fvexi 6675 . . . . 5 𝐵 ∈ V
3938mptex 6977 . . . 4 (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))) ∈ V
4036, 37, 39ovmpoa 7298 . . 3 ((𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑁 maDet 𝑅) = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))))
4137reldmmpo 7278 . . . . . 6 Rel dom maDet
4241ovprc 7187 . . . . 5 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑁 maDet 𝑅) = ∅)
43 mpt0 6479 . . . . 5 (𝑚 ∈ ∅ ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))) = ∅
4442, 43syl6eqr 2877 . . . 4 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑁 maDet 𝑅) = (𝑚 ∈ ∅ ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))))
45 df-mat 21017 . . . . . . . . . 10 Mat = (𝑦 ∈ Fin, 𝑧 ∈ V ↦ ((𝑧 freeLMod (𝑦 × 𝑦)) sSet ⟨(.r‘ndx), (𝑧 maMul ⟨𝑦, 𝑦, 𝑦⟩)⟩))
4645reldmmpo 7278 . . . . . . . . 9 Rel dom Mat
4746ovprc 7187 . . . . . . . 8 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑁 Mat 𝑅) = ∅)
483, 47syl5eq 2871 . . . . . . 7 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → 𝐴 = ∅)
4948fveq2d 6665 . . . . . 6 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (Base‘𝐴) = (Base‘∅))
50 base0 16536 . . . . . 6 ∅ = (Base‘∅)
5149, 6, 503eqtr4g 2884 . . . . 5 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → 𝐵 = ∅)
5251mpteq1d 5141 . . . 4 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))) = (𝑚 ∈ ∅ ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))))
5344, 52eqtr4d 2862 . . 3 (¬ (𝑁 ∈ V ∧ 𝑅 ∈ V) → (𝑁 maDet 𝑅) = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥))))))))
5440, 53pm2.61i 185 . 2 (𝑁 maDet 𝑅) = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))))))
551, 54eqtri 2847 1 𝐷 = (𝑚𝐵 ↦ (𝑅 Σg (𝑝𝑃 ↦ (((𝑌𝑆)‘𝑝) · (𝑈 Σg (𝑥𝑁 ↦ ((𝑝𝑥)𝑚𝑥)))))))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wa 399   = wceq 1538  wcel 2115  Vcvv 3480  c0 4276  cop 4556  cotp 4558  cmpt 5132   × cxp 5540  ccom 5546  cfv 6343  (class class class)co 7149  Fincfn 8505  ndxcnx 16480   sSet csts 16481  Basecbs 16483  .rcmulr 16566   Σg cgsu 16714  SymGrpcsymg 18495  pmSgncpsgn 18617  mulGrpcmgp 19239  ℤRHomczrh 20647   freeLMod cfrlm 20890   maMul cmmul 20994   Mat cmat 21016   maDet cmdat 21193
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 1912  ax-6 1971  ax-7 2016  ax-8 2117  ax-9 2125  ax-10 2146  ax-11 2162  ax-12 2179  ax-ext 2796  ax-rep 5176  ax-sep 5189  ax-nul 5196  ax-pow 5253  ax-pr 5317
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2071  df-mo 2624  df-eu 2655  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2964  df-ne 3015  df-ral 3138  df-rex 3139  df-reu 3140  df-rab 3142  df-v 3482  df-sbc 3759  df-csb 3867  df-dif 3922  df-un 3924  df-in 3926  df-ss 3936  df-nul 4277  df-if 4451  df-sn 4551  df-pr 4553  df-op 4557  df-uni 4825  df-iun 4907  df-br 5053  df-opab 5115  df-mpt 5133  df-id 5447  df-xp 5548  df-rel 5549  df-cnv 5550  df-co 5551  df-dm 5552  df-rn 5553  df-res 5554  df-ima 5555  df-iota 6302  df-fun 6345  df-fn 6346  df-f 6347  df-f1 6348  df-fo 6349  df-f1o 6350  df-fv 6351  df-ov 7152  df-oprab 7153  df-mpo 7154  df-slot 16487  df-base 16489  df-mat 21017  df-mdet 21194
This theorem is referenced by:  mdetleib  21196  nfimdetndef  21198  mdetfval1  21199  mdet0pr  21201  mdetf  21204
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