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Theorem cpmidpmatlem1 20494
 Description: Lemma 1 for cpmidpmat 20497. (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 6103 . . 3 (𝑘 = 𝐿 → ((coe1𝐾)‘𝑘) = ((coe1𝐾)‘𝐿))
21oveq1d 6564 . 2 (𝑘 = 𝐿 → (((coe1𝐾)‘𝑘) 𝑂) = (((coe1𝐾)‘𝐿) 𝑂))
3 cpmidpmat.g . 2 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1𝐾)‘𝑘) 𝑂))
4 ovex 6577 . 2 (((coe1𝐾)‘𝐿) 𝑂) ∈ V
52, 3, 4fvmpt 6191 1 (𝐿 ∈ ℕ0 → (𝐺𝐿) = (((coe1𝐾)‘𝐿) 𝑂))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   = wceq 1475   ∈ wcel 1977   ↦ cmpt 4643  ‘cfv 5804  (class class class)co 6549  ℕ0cn0 11169  Basecbs 15695   ·𝑠 cvsca 15772  .gcmg 17363  mulGrpcmgp 18312  1rcur 18324  algSccascl 19132  var1cv1 19367  Poly1cpl1 19368  coe1cco1 19369   Mat cmat 20032   matToPolyMat cmat2pmat 20328   CharPlyMat cchpmat 20450 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-sep 4709  ax-nul 4717  ax-pr 4833 This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3an 1033  df-tru 1478  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ral 2901  df-rex 2902  df-rab 2905  df-v 3175  df-sbc 3403  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-nul 3875  df-if 4037  df-sn 4126  df-pr 4128  df-op 4132  df-uni 4373  df-br 4584  df-opab 4644  df-mpt 4645  df-id 4953  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-iota 5768  df-fun 5806  df-fv 5812  df-ov 6552 This theorem is referenced by:  cpmidpmat  20497
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