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Theorem cpmidpmatlem1 21481
Description: Lemma 1 for cpmidpmat 21484. (Contributed by AV, 13-Nov-2019.)
Hypotheses
Ref Expression
cpmidgsum.a 𝐴 = (𝑁 Mat 𝑅)
cpmidgsum.b 𝐵 = (Base‘𝐴)
cpmidgsum.p 𝑃 = (Poly1𝑅)
cpmidgsum.y 𝑌 = (𝑁 Mat 𝑃)
cpmidgsum.x 𝑋 = (var1𝑅)
cpmidgsum.e = (.g‘(mulGrp‘𝑃))
cpmidgsum.m · = ( ·𝑠𝑌)
cpmidgsum.1 1 = (1r𝑌)
cpmidgsum.u 𝑈 = (algSc‘𝑃)
cpmidgsum.c 𝐶 = (𝑁 CharPlyMat 𝑅)
cpmidgsum.k 𝐾 = (𝐶𝑀)
cpmidgsum.h 𝐻 = (𝐾 · 1 )
cpmidgsumm2pm.o 𝑂 = (1r𝐴)
cpmidgsumm2pm.m = ( ·𝑠𝐴)
cpmidgsumm2pm.t 𝑇 = (𝑁 matToPolyMat 𝑅)
cpmidpmat.g 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1𝐾)‘𝑘) 𝑂))
Assertion
Ref Expression
cpmidpmatlem1 (𝐿 ∈ ℕ0 → (𝐺𝐿) = (((coe1𝐾)‘𝐿) 𝑂))
Distinct variable groups:   𝐵,𝑘   𝑘,𝐻   𝑘,𝑁   𝑃,𝑘   𝑅,𝑘   𝑘,𝑌   𝑘,𝐾   𝑘,𝐿   𝑘,𝑂   ,𝑘
Allowed substitution hints:   𝐴(𝑘)   𝐶(𝑘)   𝑇(𝑘)   · (𝑘)   𝑈(𝑘)   1 (𝑘)   (𝑘)   𝐺(𝑘)   𝑀(𝑘)   𝑋(𝑘)

Proof of Theorem cpmidpmatlem1
StepHypRef Expression
1 fveq2 6673 . . 3 (𝑘 = 𝐿 → ((coe1𝐾)‘𝑘) = ((coe1𝐾)‘𝐿))
21oveq1d 7174 . 2 (𝑘 = 𝐿 → (((coe1𝐾)‘𝑘) 𝑂) = (((coe1𝐾)‘𝐿) 𝑂))
3 cpmidpmat.g . 2 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1𝐾)‘𝑘) 𝑂))
4 ovex 7192 . 2 (((coe1𝐾)‘𝐿) 𝑂) ∈ V
52, 3, 4fvmpt 6771 1 (𝐿 ∈ ℕ0 → (𝐺𝐿) = (((coe1𝐾)‘𝐿) 𝑂))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1536  wcel 2113  cmpt 5149  cfv 6358  (class class class)co 7159  0cn0 11900  Basecbs 16486   ·𝑠 cvsca 16572  .gcmg 18227  mulGrpcmgp 19242  1rcur 19254  algSccascl 20087  var1cv1 20347  Poly1cpl1 20348  coe1cco1 20349   Mat cmat 21019   matToPolyMat cmat2pmat 21315   CharPlyMat cchpmat 21437
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1969  ax-7 2014  ax-8 2115  ax-9 2123  ax-10 2144  ax-11 2160  ax-12 2176  ax-ext 2796  ax-sep 5206  ax-nul 5213  ax-pr 5333
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3an 1085  df-tru 1539  df-ex 1780  df-nf 1784  df-sb 2069  df-mo 2621  df-eu 2653  df-clab 2803  df-cleq 2817  df-clel 2896  df-nfc 2966  df-ral 3146  df-rex 3147  df-rab 3150  df-v 3499  df-sbc 3776  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-nul 4295  df-if 4471  df-sn 4571  df-pr 4573  df-op 4577  df-uni 4842  df-br 5070  df-opab 5132  df-mpt 5150  df-id 5463  df-xp 5564  df-rel 5565  df-cnv 5566  df-co 5567  df-dm 5568  df-iota 6317  df-fun 6360  df-fv 6366  df-ov 7162
This theorem is referenced by:  cpmidpmat  21484
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