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Theorem cpmidpmatlem1 23127
Description: Lemma 1 for cpmidpmat 23130. (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 6881 . . 3 (𝑘 = 𝐿 → ((coe1𝐾)‘𝑘) = ((coe1𝐾)‘𝐿))
21oveq1d 7431 . 2 (𝑘 = 𝐿 → (((coe1𝐾)‘𝑘) 𝑂) = (((coe1𝐾)‘𝐿) 𝑂))
3 cpmidpmat.g . 2 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1𝐾)‘𝑘) 𝑂))
4 ovex 7449 . 2 (((coe1𝐾)‘𝐿) 𝑂) ∈ V
52, 3, 4fvmpt 6989 1 (𝐿 ∈ ℕ0 → (𝐺𝐿) = (((coe1𝐾)‘𝐿) 𝑂))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4   = wceq 1570  wcel 2145  cmpt 5186  cfv 6535  (class class class)co 7416  0cn0 12553  Basecbs 17326   ·𝑠 cvsca 17371  .gcmg 19216  mulGrpcmgp 20299  1rcur 20346  algSccascl 22099  var1cv1 22433  Poly1cpl1 22434  coe1cco1 22435   Mat cmat 22661   matToPolyMat cmat2pmat 22961   CharPlyMat cchpmat 23083
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-sep 5251  ax-nul 5263  ax-pr 5398
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-rab 3413  df-v 3452  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5550  df-xp 5661  df-rel 5662  df-cnv 5663  df-co 5664  df-dm 5665  df-iota 6491  df-fun 6537  df-fv 6543  df-ov 7419
This theorem is used by:  cpmidpmat  23130
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