Theorem cpmidpmatlem1 22763

Description: Lemma 1 for cpmidpmat 22766. (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 6860	. . 3 ⊢ (𝑘 = 𝐿 → ((coe1‘𝐾)‘𝑘) = ((coe1‘𝐾)‘𝐿))
2	1	oveq1d 7404	. 2 ⊢ (𝑘 = 𝐿 → (((coe1‘𝐾)‘𝑘) ∗ 𝑂) = (((coe1‘𝐾)‘𝐿) ∗ 𝑂))
3		cpmidpmat.g	. 2 ⊢ 𝐺 = (𝑘 ∈ ℕ0 ↦ (((coe1‘𝐾)‘𝑘) ∗ 𝑂))
4		ovex 7422	. 2 ⊢ (((coe1‘𝐾)‘𝐿) ∗ 𝑂) ∈ V
5	2, 3, 4	fvmpt 6970	1 ⊢ (𝐿 ∈ ℕ0 → (𝐺‘𝐿) = (((coe1‘𝐾)‘𝐿) ∗ 𝑂))

Syntax hints:   → wi 4   = wceq 1540   ∈ wcel 2109   ↦ cmpt 5190  ‘cfv 6513  (class class class)co 7389  ℕ₀cn0 12448  Basecbs 17185   ·_𝑠 cvsca 17230  ._gcmg 19005  mulGrpcmgp 20055  1_rcur 20096  algSccascl 21767  var₁cv1 22066  Poly₁cpl1 22067  coe₁cco1 22068   Mat cmat 22300   matToPolyMat cmat2pmat 22597   CharPlyMat cchpmat 22719

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 1967  ax-7 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2702  ax-sep 5253  ax-nul 5263  ax-pr 5389

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2534  df-eu 2563  df-clab 2709  df-cleq 2722  df-clel 2804  df-nfc 2879  df-ne 2927  df-ral 3046  df-rex 3055  df-rab 3409  df-v 3452  df-dif 3919  df-un 3921  df-ss 3933  df-nul 4299  df-if 4491  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-br 5110  df-opab 5172  df-mpt 5191  df-id 5535  df-xp 5646  df-rel 5647  df-cnv 5648  df-co 5649  df-dm 5650  df-iota 6466  df-fun 6515  df-fv 6521  df-ov 7392

This theorem is referenced by:  cpmidpmat  22766