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Theorem mat2pmatmul 22453

Description: The transformation of matrices into polynomial matrices preserves the multiplication. (Contributed by AV, 29-Oct-2019.) (Proof shortened by AV, 28-Nov-2019.)

**Hypotheses**
Ref	Expression
mat2pmatbas.t	⊢ 𝑇 = (𝑁 matToPolyMat 𝑅)
mat2pmatbas.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
mat2pmatbas.b	⊢ 𝐵 = (Base‘𝐴)
mat2pmatbas.p	⊢ 𝑃 = (Poly₁‘𝑅)
mat2pmatbas.c	⊢ 𝐶 = (𝑁 Mat 𝑃)
mat2pmatbas0.h	⊢ 𝐻 = (Base‘𝐶)

**Assertion**
Ref	Expression
mat2pmatmul	⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑇‘(𝑥(._r‘𝐴)𝑦)) = ((𝑇‘𝑥)(._r‘𝐶)(𝑇‘𝑦)))

Distinct variable groups: 𝑥,𝐵,𝑦 𝑥,𝑁,𝑦 𝑥,𝑃,𝑦 𝑥,𝑅,𝑦 𝑥,𝑇,𝑦 𝑥,𝐴,𝑦 𝑥,𝐶,𝑦 𝑥,𝐻,𝑦

Proof of Theorem mat2pmatmul Dummy variables 𝑚 𝑖 𝑗 𝑘 𝑙 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		mat2pmatbas.a	. . . . . . . . . . . . 13 ⊢ 𝐴 = (𝑁 Mat 𝑅)
2		eqid 2730	. . . . . . . . . . . . 13 ⊢ (𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩) = (𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩)
3	1, 2	matmulr 22160	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩) = (._r‘𝐴))
4	3	eqcomd 2736	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (._r‘𝐴) = (𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩))
5	4	oveqdr 7439	. . . . . . . . . 10 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(._r‘𝐴)𝑦) = (𝑥(𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩)𝑦))
6		eqid 2730	. . . . . . . . . . 11 ⊢ (Base‘𝑅) = (Base‘𝑅)
7		eqid 2730	. . . . . . . . . . 11 ⊢ (._r‘𝑅) = (._r‘𝑅)
8		crngring 20139	. . . . . . . . . . . 12 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring)
9	8	ad2antlr 723	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑅 ∈ Ring)
10		simpll 763	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑁 ∈ Fin)
11		mat2pmatbas.b	. . . . . . . . . . . . . . . 16 ⊢ 𝐵 = (Base‘𝐴)
12	11	eleq2i 2823	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ 𝐵 ↔ 𝑥 ∈ (Base‘𝐴))
13	12	biimpi 215	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ 𝐵 → 𝑥 ∈ (Base‘𝐴))
14	13	adantr 479	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ (Base‘𝐴))
15	14	adantl 480	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑥 ∈ (Base‘𝐴))
16	1, 6	matbas2 22143	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) = (Base‘𝐴))
17	16	adantr 479	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) = (Base‘𝐴))
18	15, 17	eleqtrrd 2834	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑥 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)))
19	11	eleq2i 2823	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ 𝐵 ↔ 𝑦 ∈ (Base‘𝐴))
20	19	biimpi 215	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ 𝐵 → 𝑦 ∈ (Base‘𝐴))
21	20	ad2antll 725	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ (Base‘𝐴))
22	16	eleq2d 2817	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑦 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) ↔ 𝑦 ∈ (Base‘𝐴)))
23	22	adantr 479	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑦 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)) ↔ 𝑦 ∈ (Base‘𝐴)))
24	21, 23	mpbird 256	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ ((Base‘𝑅) ↑_m (𝑁 × 𝑁)))
25	2, 6, 7, 9, 10, 10, 10, 18, 24	mamuval 22108	. . . . . . . . . 10 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(𝑅 maMul ⟨𝑁, 𝑁, 𝑁⟩)𝑦) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗))))))
26	5, 25	eqtrd 2770	. . . . . . . . 9 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(._r‘𝐴)𝑦) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗))))))
27	26	3ad2ant1 1131	. . . . . . . 8 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑥(._r‘𝐴)𝑦) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗))))))
28		oveq1 7418	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑘 → (𝑖𝑥𝑚) = (𝑘𝑥𝑚))
29		oveq2 7419	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → (𝑚𝑦𝑗) = (𝑚𝑦𝑙))
30	28, 29	oveqan12d 7430	. . . . . . . . . . 11 ⊢ ((𝑖 = 𝑘 ∧ 𝑗 = 𝑙) → ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗)) = ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))
31	30	mpteq2dv 5249	. . . . . . . . . 10 ⊢ ((𝑖 = 𝑘 ∧ 𝑗 = 𝑙) → (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗))) = (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))))
32	31	oveq2d 7427	. . . . . . . . 9 ⊢ ((𝑖 = 𝑘 ∧ 𝑗 = 𝑙) → (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗)))) = (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))))
33	32	adantl 480	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ (𝑖 = 𝑘 ∧ 𝑗 = 𝑙)) → (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑖𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑗)))) = (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))))
34		simp2 1135	. . . . . . . 8 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑘 ∈ 𝑁)
35		simp3 1136	. . . . . . . 8 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑙 ∈ 𝑁)
36		ovexd 7446	. . . . . . . 8 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))) ∈ V)
37	27, 33, 34, 35, 36	ovmpod 7562	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑘(𝑥(._r‘𝐴)𝑦)𝑙) = (𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))))
38	37	fveq2d 6894	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙)) = ((algSc‘𝑃)‘(𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))))))
39		eqid 2730	. . . . . . 7 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
40		ringcmn 20170	. . . . . . . . . 10 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ CMnd)
41	8, 40	syl 17	. . . . . . . . 9 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ CMnd)
42	41	ad2antlr 723	. . . . . . . 8 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑅 ∈ CMnd)
43	42	3ad2ant1 1131	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑅 ∈ CMnd)
44		mat2pmatbas.p	. . . . . . . . . . . 12 ⊢ 𝑃 = (Poly₁‘𝑅)
45	44	ply1ring 21990	. . . . . . . . . . 11 ⊢ (𝑅 ∈ Ring → 𝑃 ∈ Ring)
46	8, 45	syl 17	. . . . . . . . . 10 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ Ring)
47		ringmnd 20137	. . . . . . . . . 10 ⊢ (𝑃 ∈ Ring → 𝑃 ∈ Mnd)
48	46, 47	syl 17	. . . . . . . . 9 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ Mnd)
49	48	ad2antlr 723	. . . . . . . 8 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑃 ∈ Mnd)
50	49	3ad2ant1 1131	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑃 ∈ Mnd)
51	10	3ad2ant1 1131	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑁 ∈ Fin)
52		eqid 2730	. . . . . . . . . . . 12 ⊢ (algSc‘𝑃) = (algSc‘𝑃)
53		eqid 2730	. . . . . . . . . . . 12 ⊢ (Scalar‘𝑃) = (Scalar‘𝑃)
54	46	adantl 480	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑃 ∈ Ring)
55	44	ply1lmod 21994	. . . . . . . . . . . . . 14 ⊢ (𝑅 ∈ Ring → 𝑃 ∈ LMod)
56	8, 55	syl 17	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ LMod)
57	56	adantl 480	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑃 ∈ LMod)
58	52, 53, 54, 57	asclghm 21656	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (algSc‘𝑃) ∈ ((Scalar‘𝑃) GrpHom 𝑃))
59	44	ply1sca 21995	. . . . . . . . . . . . 13 ⊢ (𝑅 ∈ CRing → 𝑅 = (Scalar‘𝑃))
60	59	adantl 480	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑅 = (Scalar‘𝑃))
61	60	oveq1d 7426	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑅 GrpHom 𝑃) = ((Scalar‘𝑃) GrpHom 𝑃))
62	58, 61	eleqtrrd 2834	. . . . . . . . . 10 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (algSc‘𝑃) ∈ (𝑅 GrpHom 𝑃))
63		ghmmhm 19140	. . . . . . . . . 10 ⊢ ((algSc‘𝑃) ∈ (𝑅 GrpHom 𝑃) → (algSc‘𝑃) ∈ (𝑅 MndHom 𝑃))
64	62, 63	syl 17	. . . . . . . . 9 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (algSc‘𝑃) ∈ (𝑅 MndHom 𝑃))
65	64	adantr 479	. . . . . . . 8 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (algSc‘𝑃) ∈ (𝑅 MndHom 𝑃))
66	65	3ad2ant1 1131	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (algSc‘𝑃) ∈ (𝑅 MndHom 𝑃))
67	9	3ad2ant1 1131	. . . . . . . . 9 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑅 ∈ Ring)
68	67	adantr 479	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑅 ∈ Ring)
69	34	adantr 479	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑘 ∈ 𝑁)
70		simpr 483	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑚 ∈ 𝑁)
71	15	3ad2ant1 1131	. . . . . . . . . . 11 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑥 ∈ (Base‘𝐴))
72	71	adantr 479	. . . . . . . . . 10 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑥 ∈ (Base‘𝐴))
73	72, 12	sylibr 233	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑥 ∈ 𝐵)
74	1, 6, 11, 69, 70, 73	matecld 22148	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → (𝑘𝑥𝑚) ∈ (Base‘𝑅))
75	35	adantr 479	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑙 ∈ 𝑁)
76	1	fveq2i 6893	. . . . . . . . . . . . . . . 16 ⊢ (Base‘𝐴) = (Base‘(𝑁 Mat 𝑅))
77	11, 76	eqtri 2758	. . . . . . . . . . . . . . 15 ⊢ 𝐵 = (Base‘(𝑁 Mat 𝑅))
78	77	eleq2i 2823	. . . . . . . . . . . . . 14 ⊢ (𝑦 ∈ 𝐵 ↔ 𝑦 ∈ (Base‘(𝑁 Mat 𝑅)))
79	78	biimpi 215	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ 𝐵 → 𝑦 ∈ (Base‘(𝑁 Mat 𝑅)))
80	79	ad2antll 725	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑦 ∈ (Base‘(𝑁 Mat 𝑅)))
81	80	3ad2ant1 1131	. . . . . . . . . . 11 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑦 ∈ (Base‘(𝑁 Mat 𝑅)))
82	81	adantr 479	. . . . . . . . . 10 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑦 ∈ (Base‘(𝑁 Mat 𝑅)))
83	82, 78	sylibr 233	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑦 ∈ 𝐵)
84	1, 6, 11, 70, 75, 83	matecld 22148	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → (𝑚𝑦𝑙) ∈ (Base‘𝑅))
85	6, 7	ringcl 20144	. . . . . . . 8 ⊢ ((𝑅 ∈ Ring ∧ (𝑘𝑥𝑚) ∈ (Base‘𝑅) ∧ (𝑚𝑦𝑙) ∈ (Base‘𝑅)) → ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)) ∈ (Base‘𝑅))
86	68, 74, 84, 85	syl3anc 1369	. . . . . . 7 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)) ∈ (Base‘𝑅))
87		eqid 2730	. . . . . . . 8 ⊢ (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))) = (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))
88		ovexd 7446	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)) ∈ V)
89		fvexd 6905	. . . . . . . 8 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (0_g‘𝑅) ∈ V)
90	87, 51, 88, 89	fsuppmptdm 9376	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))) finSupp (0_g‘𝑅))
91	6, 39, 43, 50, 51, 66, 86, 90	gsummptmhm 19849	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ ((algSc‘𝑃)‘((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))))) = ((algSc‘𝑃)‘(𝑅 Σ_g (𝑚 ∈ 𝑁 ↦ ((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))))))
92	44	ply1assa 21942	. . . . . . . . . . . . . . 15 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ AssAlg)
93	92	adantl 480	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑃 ∈ AssAlg)
94	52, 53	asclrhm 21663	. . . . . . . . . . . . . 14 ⊢ (𝑃 ∈ AssAlg → (algSc‘𝑃) ∈ ((Scalar‘𝑃) RingHom 𝑃))
95	93, 94	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (algSc‘𝑃) ∈ ((Scalar‘𝑃) RingHom 𝑃))
96	60	oveq1d 7426	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑅 RingHom 𝑃) = ((Scalar‘𝑃) RingHom 𝑃))
97	95, 96	eleqtrrd 2834	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (algSc‘𝑃) ∈ (𝑅 RingHom 𝑃))
98	97	adantr 479	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (algSc‘𝑃) ∈ (𝑅 RingHom 𝑃))
99	98	3ad2ant1 1131	. . . . . . . . . 10 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (algSc‘𝑃) ∈ (𝑅 RingHom 𝑃))
100	99	adantr 479	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → (algSc‘𝑃) ∈ (𝑅 RingHom 𝑃))
101	21	3ad2ant1 1131	. . . . . . . . . . . 12 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → 𝑦 ∈ (Base‘𝐴))
102	101	adantr 479	. . . . . . . . . . 11 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑦 ∈ (Base‘𝐴))
103	102, 19	sylibr 233	. . . . . . . . . 10 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → 𝑦 ∈ 𝐵)
104	1, 6, 11, 70, 75, 103	matecld 22148	. . . . . . . . 9 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → (𝑚𝑦𝑙) ∈ (Base‘𝑅))
105		eqid 2730	. . . . . . . . . 10 ⊢ (._r‘𝑃) = (._r‘𝑃)
106	6, 7, 105	rhmmul 20377	. . . . . . . . 9 ⊢ (((algSc‘𝑃) ∈ (𝑅 RingHom 𝑃) ∧ (𝑘𝑥𝑚) ∈ (Base‘𝑅) ∧ (𝑚𝑦𝑙) ∈ (Base‘𝑅)) → ((algSc‘𝑃)‘((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))) = (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙))))
107	100, 74, 104, 106	syl3anc 1369	. . . . . . . 8 ⊢ (((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) ∧ 𝑚 ∈ 𝑁) → ((algSc‘𝑃)‘((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))) = (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙))))
108	107	mpteq2dva 5247	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑚 ∈ 𝑁 ↦ ((algSc‘𝑃)‘((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙)))) = (𝑚 ∈ 𝑁 ↦ (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙)))))
109	108	oveq2d 7427	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ ((algSc‘𝑃)‘((𝑘𝑥𝑚)(._r‘𝑅)(𝑚𝑦𝑙))))) = (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙))))))
110	38, 91, 109	3eqtr2d 2776	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙)) = (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙))))))
111	110	mpoeq3dva 7488	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙))) = (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙)))))))
112		mat2pmatbas.c	. . . . 5 ⊢ 𝐶 = (𝑁 Mat 𝑃)
113		eqid 2730	. . . . 5 ⊢ (Base‘𝑃) = (Base‘𝑃)
114		eqid 2730	. . . . 5 ⊢ (._r‘𝐶) = (._r‘𝐶)
115	46	ad2antlr 723	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → 𝑃 ∈ Ring)
116		eqid 2730	. . . . 5 ⊢ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗)))
117		eqid 2730	. . . . 5 ⊢ (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗))) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗)))
118	9	3ad2ant1 1131	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑅 ∈ Ring)
119		simp2 1135	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑖 ∈ 𝑁)
120		simp3 1136	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑗 ∈ 𝑁)
121		simp1rl 1236	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑥 ∈ 𝐵)
122	1, 6, 11, 119, 120, 121	matecld 22148	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → (𝑖𝑥𝑗) ∈ (Base‘𝑅))
123	44, 52, 6, 113	ply1sclcl 22028	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑖𝑥𝑗) ∈ (Base‘𝑅)) → ((algSc‘𝑃)‘(𝑖𝑥𝑗)) ∈ (Base‘𝑃))
124	118, 122, 123	syl2anc 582	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑖𝑥𝑗)) ∈ (Base‘𝑃))
125		simp1rr 1237	. . . . . . 7 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑦 ∈ 𝐵)
126	1, 6, 11, 119, 120, 125	matecld 22148	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → (𝑖𝑦𝑗) ∈ (Base‘𝑅))
127	44, 52, 6, 113	ply1sclcl 22028	. . . . . 6 ⊢ ((𝑅 ∈ Ring ∧ (𝑖𝑦𝑗) ∈ (Base‘𝑅)) → ((algSc‘𝑃)‘(𝑖𝑦𝑗)) ∈ (Base‘𝑃))
128	118, 126, 127	syl2anc 582	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑖𝑦𝑗)) ∈ (Base‘𝑃))
129		oveq12 7420	. . . . . . 7 ⊢ ((𝑘 = 𝑖 ∧ 𝑚 = 𝑗) → (𝑘𝑥𝑚) = (𝑖𝑥𝑗))
130	129	fveq2d 6894	. . . . . 6 ⊢ ((𝑘 = 𝑖 ∧ 𝑚 = 𝑗) → ((algSc‘𝑃)‘(𝑘𝑥𝑚)) = ((algSc‘𝑃)‘(𝑖𝑥𝑗)))
131	130	adantl 480	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ (𝑘 = 𝑖 ∧ 𝑚 = 𝑗)) → ((algSc‘𝑃)‘(𝑘𝑥𝑚)) = ((algSc‘𝑃)‘(𝑖𝑥𝑗)))
132		oveq12 7420	. . . . . . 7 ⊢ ((𝑚 = 𝑖 ∧ 𝑙 = 𝑗) → (𝑚𝑦𝑙) = (𝑖𝑦𝑗))
133	132	fveq2d 6894	. . . . . 6 ⊢ ((𝑚 = 𝑖 ∧ 𝑙 = 𝑗) → ((algSc‘𝑃)‘(𝑚𝑦𝑙)) = ((algSc‘𝑃)‘(𝑖𝑦𝑗)))
134	133	adantl 480	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ (𝑚 = 𝑖 ∧ 𝑙 = 𝑗)) → ((algSc‘𝑃)‘(𝑚𝑦𝑙)) = ((algSc‘𝑃)‘(𝑖𝑦𝑗)))
135		fvexd 6905	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑘 ∈ 𝑁 ∧ 𝑚 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑘𝑥𝑚)) ∈ V)
136		fvexd 6905	. . . . 5 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) ∧ 𝑚 ∈ 𝑁 ∧ 𝑙 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑚𝑦𝑙)) ∈ V)
137	112, 113, 114, 105, 115, 10, 116, 117, 124, 128, 131, 134, 135, 136	mpomatmul 22168	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗)))(._r‘𝐶)(𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗)))) = (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ (𝑃 Σ_g (𝑚 ∈ 𝑁 ↦ (((algSc‘𝑃)‘(𝑘𝑥𝑚))(._r‘𝑃)((algSc‘𝑃)‘(𝑚𝑦𝑙)))))))
138	111, 137	eqtr4d 2773	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙))) = ((𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗)))(._r‘𝐶)(𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗)))))
139	1	matring 22165	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring)
140	8, 139	sylan2 591	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝐴 ∈ Ring)
141	140	anim1i 613	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝐴 ∈ Ring ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)))
142		3anass 1093	. . . . . 6 ⊢ ((𝐴 ∈ Ring ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) ↔ (𝐴 ∈ Ring ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)))
143	141, 142	sylibr 233	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝐴 ∈ Ring ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵))
144		eqid 2730	. . . . . 6 ⊢ (._r‘𝐴) = (._r‘𝐴)
145	11, 144	ringcl 20144	. . . . 5 ⊢ ((𝐴 ∈ Ring ∧ 𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → (𝑥(._r‘𝐴)𝑦) ∈ 𝐵)
146	143, 145	syl 17	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑥(._r‘𝐴)𝑦) ∈ 𝐵)
147		mat2pmatbas.t	. . . . 5 ⊢ 𝑇 = (𝑁 matToPolyMat 𝑅)
148	147, 1, 11, 44, 52	mat2pmatval 22446	. . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring ∧ (𝑥(._r‘𝐴)𝑦) ∈ 𝐵) → (𝑇‘(𝑥(._r‘𝐴)𝑦)) = (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙))))
149	10, 9, 146, 148	syl3anc 1369	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑇‘(𝑥(._r‘𝐴)𝑦)) = (𝑘 ∈ 𝑁, 𝑙 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑘(𝑥(._r‘𝐴)𝑦)𝑙))))
150		simpl 481	. . . . . . 7 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ 𝐵)
151	150	anim2i 615	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑥 ∈ 𝐵))
152		df-3an 1087	. . . . . 6 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑥 ∈ 𝐵) ↔ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑥 ∈ 𝐵))
153	151, 152	sylibr 233	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑥 ∈ 𝐵))
154	147, 1, 11, 44, 52	mat2pmatval 22446	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑥 ∈ 𝐵) → (𝑇‘𝑥) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗))))
155	153, 154	syl 17	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑇‘𝑥) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗))))
156		simpr 483	. . . . . . 7 ⊢ ((𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵) → 𝑦 ∈ 𝐵)
157	156	anim2i 615	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑦 ∈ 𝐵))
158		df-3an 1087	. . . . . 6 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑦 ∈ 𝐵) ↔ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑦 ∈ 𝐵))
159	157, 158	sylibr 233	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑦 ∈ 𝐵))
160	147, 1, 11, 44, 52	mat2pmatval 22446	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 𝑦 ∈ 𝐵) → (𝑇‘𝑦) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗))))
161	159, 160	syl 17	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑇‘𝑦) = (𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗))))
162	155, 161	oveq12d 7429	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → ((𝑇‘𝑥)(._r‘𝐶)(𝑇‘𝑦)) = ((𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑥𝑗)))(._r‘𝐶)(𝑖 ∈ 𝑁, 𝑗 ∈ 𝑁 ↦ ((algSc‘𝑃)‘(𝑖𝑦𝑗)))))
163	138, 149, 162	3eqtr4d 2780	. 2 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑥 ∈ 𝐵 ∧ 𝑦 ∈ 𝐵)) → (𝑇‘(𝑥(._r‘𝐴)𝑦)) = ((𝑇‘𝑥)(._r‘𝐶)(𝑇‘𝑦)))
164	163	ralrimivva 3198	1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑇‘(𝑥(._r‘𝐴)𝑦)) = ((𝑇‘𝑥)(._r‘𝐶)(𝑇‘𝑦)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 ∧ w3a 1085 = wceq 1539 ∈ wcel 2104 ∀wral 3059 Vcvv 3472 ⟨cotp 4635 ↦ cmpt 5230 × cxp 5673 ‘cfv 6542 (class class class)co 7411 ∈ cmpo 7413 ↑_m cmap 8822 Fincfn 8941 Basecbs 17148 ._rcmulr 17202 Scalarcsca 17204 0_gc0g 17389 Σ_g cgsu 17390 Mndcmnd 18659 MndHom cmhm 18703 GrpHom cghm 19127 CMndccmn 19689 Ringcrg 20127 CRingccrg 20128 RingHom crh 20360 LModclmod 20614 AssAlgcasa 21624 algSccascl 21626 Poly₁cpl1 21920 maMul cmmul 22105 Mat cmat 22127 matToPolyMat cmat2pmat 22426

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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-ot 4636 df-uni 4908 df-int 4950 df-iun 4998 df-iin 4999 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-se 5631 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-of 7672 df-ofr 7673 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-er 8705 df-map 8824 df-pm 8825 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-sup 9439 df-oi 9507 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-4 12281 df-5 12282 df-6 12283 df-7 12284 df-8 12285 df-9 12286 df-n0 12477 df-z 12563 df-dec 12682 df-uz 12827 df-fz 13489 df-fzo 13632 df-seq 13971 df-hash 14295 df-struct 17084 df-sets 17101 df-slot 17119 df-ndx 17131 df-base 17149 df-ress 17178 df-plusg 17214 df-mulr 17215 df-sca 17217 df-vsca 17218 df-ip 17219 df-tset 17220 df-ple 17221 df-ds 17223 df-hom 17225 df-cco 17226 df-0g 17391 df-gsum 17392 df-prds 17397 df-pws 17399 df-mre 17534 df-mrc 17535 df-acs 17537 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-mhm 18705 df-submnd 18706 df-grp 18858 df-minusg 18859 df-sbg 18860 df-mulg 18987 df-subg 19039 df-ghm 19128 df-cntz 19222 df-cmn 19691 df-abl 19692 df-mgp 20029 df-rng 20047 df-ur 20076 df-ring 20129 df-cring 20130 df-rhm 20363 df-subrng 20434 df-subrg 20459 df-lmod 20616 df-lss 20687 df-sra 20930 df-rgmod 20931 df-dsmm 21506 df-frlm 21521 df-assa 21627 df-ascl 21629 df-psr 21681 df-mpl 21683 df-opsr 21685 df-psr1 21923 df-ply1 21925 df-mamu 22106 df-mat 22128 df-mat2pmat 22429

This theorem is referenced by: mat2pmatmhm 22455

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