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Theorem cpmidpmatlem1 21902
Description: Lemma 1 for cpmidpmat 21905. (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 6753 . . 3 (𝑘 = 𝐿 → ((coe1𝐾)‘𝑘) = ((coe1𝐾)‘𝐿))
21oveq1d 7267 . 2 (𝑘 = 𝐿 → (((coe1𝐾)‘𝑘) 𝑂) = (((coe1𝐾)‘𝐿) 𝑂))
3 cpmidpmat.g . 2 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1𝐾)‘𝑘) 𝑂))
4 ovex 7285 . 2 (((coe1𝐾)‘𝐿) 𝑂) ∈ V
52, 3, 4fvmpt 6854 1 (𝐿 ∈ ℕ0 → (𝐺𝐿) = (((coe1𝐾)‘𝐿) 𝑂))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1543  wcel 2112  cmpt 5152  cfv 6415  (class class class)co 7252  0cn0 12138  Basecbs 16815   ·𝑠 cvsca 16867  .gcmg 18590  mulGrpcmgp 19610  1rcur 19627  algSccascl 20944  var1cv1 21232  Poly1cpl1 21233  coe1cco1 21234   Mat cmat 21439   matToPolyMat cmat2pmat 21736   CharPlyMat cchpmat 21858
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 2016  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2160  ax-12 2177  ax-ext 2710  ax-sep 5216  ax-nul 5223  ax-pr 5346
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2818  df-nfc 2889  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3425  df-dif 3887  df-un 3889  df-in 3891  df-ss 3901  df-nul 4255  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-br 5071  df-opab 5133  df-mpt 5153  df-id 5479  df-xp 5585  df-rel 5586  df-cnv 5587  df-co 5588  df-dm 5589  df-iota 6373  df-fun 6417  df-fv 6423  df-ov 7255
This theorem is referenced by:  cpmidpmat  21905
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