Theorem cpmidpmatlem1 22019

Description: Lemma 1 for cpmidpmat 22022. (Contributed by AV, 13-Nov-2019.)

Hypotheses

Ref	Expression
cpmidgsum.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
cpmidgsum.b	⊢ 𝐵 = (Base‘𝐴)
cpmidgsum.p	⊢ 𝑃 = (Poly1‘𝑅)
cpmidgsum.y	⊢ 𝑌 = (𝑁 Mat 𝑃)
cpmidgsum.x	⊢ 𝑋 = (var1‘𝑅)
cpmidgsum.e	⊢ ↑ = (.g‘(mulGrp‘𝑃))
cpmidgsum.m	⊢ · = ( ·𝑠 ‘𝑌)
cpmidgsum.1	⊢ 1 = (1r‘𝑌)
cpmidgsum.u	⊢ 𝑈 = (algSc‘𝑃)
cpmidgsum.c	⊢ 𝐶 = (𝑁 CharPlyMat 𝑅)
cpmidgsum.k	⊢ 𝐾 = (𝐶‘𝑀)
cpmidgsum.h	⊢ 𝐻 = (𝐾 · 1 )
cpmidgsumm2pm.o	⊢ 𝑂 = (1r‘𝐴)
cpmidgsumm2pm.m	⊢ ∗ = ( ·𝑠 ‘𝐴)
cpmidgsumm2pm.t	⊢ 𝑇 = (𝑁 matToPolyMat 𝑅)
cpmidpmat.g	⊢ 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1‘𝐾)‘𝑘) ∗ 𝑂))

Assertion

Ref	Expression
cpmidpmatlem1	⊢ (𝐿 ∈ ℕ0 → (𝐺‘𝐿) = (((coe1‘𝐾)‘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

Step	Hyp	Ref	Expression
1		fveq2 6774	. . 3 ⊢ (𝑘 = 𝐿 → ((coe1‘𝐾)‘𝑘) = ((coe1‘𝐾)‘𝐿))
2	1	oveq1d 7290	. 2 ⊢ (𝑘 = 𝐿 → (((coe1‘𝐾)‘𝑘) ∗ 𝑂) = (((coe1‘𝐾)‘𝐿) ∗ 𝑂))
3		cpmidpmat.g	. 2 ⊢ 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1‘𝐾)‘𝑘) ∗ 𝑂))
4		ovex 7308	. 2 ⊢ (((coe1‘𝐾)‘𝐿) ∗ 𝑂) ∈ V
5	2, 3, 4	fvmpt 6875	1 ⊢ (𝐿 ∈ ℕ0 → (𝐺‘𝐿) = (((coe1‘𝐾)‘𝐿) ∗ 𝑂))

Syntax hints:   → wi 4   = wceq 1539   ∈ wcel 2106   ↦ cmpt 5157  ‘cfv 6433  (class class class)co 7275  ℕ₀cn0 12233  Basecbs 16912   ·_𝑠 cvsca 16966  ._gcmg 18700  mulGrpcmgp 19720  1_rcur 19737  algSccascl 21059  var₁cv1 21347  Poly₁cpl1 21348  coe₁cco1 21349   Mat cmat 21554   matToPolyMat cmat2pmat 21853   CharPlyMat cchpmat 21975

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pr 5352

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-nul 4257  df-if 4460  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-mpt 5158  df-id 5489  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-iota 6391  df-fun 6435  df-fv 6441  df-ov 7278

This theorem is referenced by:  cpmidpmat  22022