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Theorem chp0mat 22347

Description: The characteristic polynomial of the zero matrix. (Contributed by AV, 18-Aug-2019.)

**Hypotheses**
Ref	Expression
chp0mat.c	⊢ 𝐶 = (𝑁 CharPlyMat 𝑅)
chp0mat.p	⊢ 𝑃 = (Poly₁‘𝑅)
chp0mat.a	⊢ 𝐴 = (𝑁 Mat 𝑅)
chp0mat.x	⊢ 𝑋 = (var₁‘𝑅)
chp0mat.g	⊢ 𝐺 = (mulGrp‘𝑃)
chp0mat.m	⊢ ↑ = (._g‘𝐺)
chp0mat.0	⊢ 0 = (0_g‘𝐴)

**Assertion**
Ref	Expression
chp0mat	⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝐶‘ 0 ) = ((♯‘𝑁) ↑ 𝑋))

Proof of Theorem chp0mat Dummy variables 𝑖 𝑗 𝑘 𝑥 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpl 483	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑁 ∈ Fin)
2		simpr 485	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑅 ∈ CRing)
3		crngring 20067	. . . . 5 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring)
4		chp0mat.a	. . . . . 6 ⊢ 𝐴 = (𝑁 Mat 𝑅)
5	4	matring 21944	. . . . 5 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 𝐴 ∈ Ring)
6	3, 5	sylan2 593	. . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝐴 ∈ Ring)
7		ringgrp 20060	. . . 4 ⊢ (𝐴 ∈ Ring → 𝐴 ∈ Grp)
8		eqid 2732	. . . . 5 ⊢ (Base‘𝐴) = (Base‘𝐴)
9		chp0mat.0	. . . . 5 ⊢ 0 = (0_g‘𝐴)
10	8, 9	grpidcl 18849	. . . 4 ⊢ (𝐴 ∈ Grp → 0 ∈ (Base‘𝐴))
11	6, 7, 10	3syl 18	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 0 ∈ (Base‘𝐴))
12		eqid 2732	. . . . . . . . . 10 ⊢ (0_g‘𝑅) = (0_g‘𝑅)
13	4, 12	mat0op 21920	. . . . . . . . 9 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → (0_g‘𝐴) = (𝑥 ∈ 𝑁, 𝑦 ∈ 𝑁 ↦ (0_g‘𝑅)))
14	9, 13	eqtrid 2784	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ Ring) → 0 = (𝑥 ∈ 𝑁, 𝑦 ∈ 𝑁 ↦ (0_g‘𝑅)))
15	3, 14	sylan2 593	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 0 = (𝑥 ∈ 𝑁, 𝑦 ∈ 𝑁 ↦ (0_g‘𝑅)))
16	15	adantr 481	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → 0 = (𝑥 ∈ 𝑁, 𝑦 ∈ 𝑁 ↦ (0_g‘𝑅)))
17		eqidd 2733	. . . . . 6 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) ∧ (𝑥 = 𝑖 ∧ 𝑦 = 𝑗)) → (0_g‘𝑅) = (0_g‘𝑅))
18		simpl 483	. . . . . . 7 ⊢ ((𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑖 ∈ 𝑁)
19	18	adantl 482	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → 𝑖 ∈ 𝑁)
20		simpr 485	. . . . . . 7 ⊢ ((𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁) → 𝑗 ∈ 𝑁)
21	20	adantl 482	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → 𝑗 ∈ 𝑁)
22		fvexd 6906	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → (0_g‘𝑅) ∈ V)
23	16, 17, 19, 21, 22	ovmpod 7559	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → (𝑖 0 𝑗) = (0_g‘𝑅))
24	23	a1d 25	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ (𝑖 ∈ 𝑁 ∧ 𝑗 ∈ 𝑁)) → (𝑖 ≠ 𝑗 → (𝑖 0 𝑗) = (0_g‘𝑅)))
25	24	ralrimivva 3200	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → ∀𝑖 ∈ 𝑁 ∀𝑗 ∈ 𝑁 (𝑖 ≠ 𝑗 → (𝑖 0 𝑗) = (0_g‘𝑅)))
26		chp0mat.c	. . . 4 ⊢ 𝐶 = (𝑁 CharPlyMat 𝑅)
27		chp0mat.p	. . . 4 ⊢ 𝑃 = (Poly₁‘𝑅)
28		eqid 2732	. . . 4 ⊢ (algSc‘𝑃) = (algSc‘𝑃)
29		chp0mat.x	. . . 4 ⊢ 𝑋 = (var₁‘𝑅)
30		chp0mat.g	. . . 4 ⊢ 𝐺 = (mulGrp‘𝑃)
31		eqid 2732	. . . 4 ⊢ (-_g‘𝑃) = (-_g‘𝑃)
32	26, 27, 4, 28, 8, 29, 12, 30, 31	chpdmat 22342	. . 3 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing ∧ 0 ∈ (Base‘𝐴)) ∧ ∀𝑖 ∈ 𝑁 ∀𝑗 ∈ 𝑁 (𝑖 ≠ 𝑗 → (𝑖 0 𝑗) = (0_g‘𝑅))) → (𝐶‘ 0 ) = (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘))))))
33	1, 2, 11, 25, 32	syl31anc 1373	. 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝐶‘ 0 ) = (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘))))))
34	15	adantr 481	. . . . . . . . 9 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → 0 = (𝑥 ∈ 𝑁, 𝑦 ∈ 𝑁 ↦ (0_g‘𝑅)))
35		eqidd 2733	. . . . . . . . 9 ⊢ ((((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) ∧ (𝑥 = 𝑘 ∧ 𝑦 = 𝑘)) → (0_g‘𝑅) = (0_g‘𝑅))
36		simpr 485	. . . . . . . . 9 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → 𝑘 ∈ 𝑁)
37		fvexd 6906	. . . . . . . . 9 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (0_g‘𝑅) ∈ V)
38	34, 35, 36, 36, 37	ovmpod 7559	. . . . . . . 8 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (𝑘 0 𝑘) = (0_g‘𝑅))
39	38	fveq2d 6895	. . . . . . 7 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑘 0 𝑘)) = ((algSc‘𝑃)‘(0_g‘𝑅)))
40	3	adantl 482	. . . . . . . . 9 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑅 ∈ Ring)
41		eqid 2732	. . . . . . . . . 10 ⊢ (0_g‘𝑃) = (0_g‘𝑃)
42	27, 28, 12, 41	ply1scl0 21811	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → ((algSc‘𝑃)‘(0_g‘𝑅)) = (0_g‘𝑃))
43	40, 42	syl 17	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → ((algSc‘𝑃)‘(0_g‘𝑅)) = (0_g‘𝑃))
44	43	adantr 481	. . . . . . 7 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → ((algSc‘𝑃)‘(0_g‘𝑅)) = (0_g‘𝑃))
45	39, 44	eqtrd 2772	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → ((algSc‘𝑃)‘(𝑘 0 𝑘)) = (0_g‘𝑃))
46	45	oveq2d 7424	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘))) = (𝑋(-_g‘𝑃)(0_g‘𝑃)))
47	27	ply1ring 21769	. . . . . . . . . 10 ⊢ (𝑅 ∈ Ring → 𝑃 ∈ Ring)
48		ringgrp 20060	. . . . . . . . . 10 ⊢ (𝑃 ∈ Ring → 𝑃 ∈ Grp)
49	3, 47, 48	3syl 18	. . . . . . . . 9 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ Grp)
50	49	adantl 482	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑃 ∈ Grp)
51		eqid 2732	. . . . . . . . . 10 ⊢ (Base‘𝑃) = (Base‘𝑃)
52	29, 27, 51	vr1cl 21740	. . . . . . . . 9 ⊢ (𝑅 ∈ Ring → 𝑋 ∈ (Base‘𝑃))
53	40, 52	syl 17	. . . . . . . 8 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑋 ∈ (Base‘𝑃))
54	50, 53	jca 512	. . . . . . 7 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑃 ∈ Grp ∧ 𝑋 ∈ (Base‘𝑃)))
55	54	adantr 481	. . . . . 6 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (𝑃 ∈ Grp ∧ 𝑋 ∈ (Base‘𝑃)))
56	51, 41, 31	grpsubid1 18907	. . . . . 6 ⊢ ((𝑃 ∈ Grp ∧ 𝑋 ∈ (Base‘𝑃)) → (𝑋(-_g‘𝑃)(0_g‘𝑃)) = 𝑋)
57	55, 56	syl 17	. . . . 5 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (𝑋(-_g‘𝑃)(0_g‘𝑃)) = 𝑋)
58	46, 57	eqtrd 2772	. . . 4 ⊢ (((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) ∧ 𝑘 ∈ 𝑁) → (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘))) = 𝑋)
59	58	mpteq2dva 5248	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝑘 ∈ 𝑁 ↦ (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘)))) = (𝑘 ∈ 𝑁 ↦ 𝑋))
60	59	oveq2d 7424	. 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ (𝑋(-_g‘𝑃)((algSc‘𝑃)‘(𝑘 0 𝑘))))) = (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ 𝑋)))
61	27	ply1crng 21721	. . . . 5 ⊢ (𝑅 ∈ CRing → 𝑃 ∈ CRing)
62	30	crngmgp 20063	. . . . 5 ⊢ (𝑃 ∈ CRing → 𝐺 ∈ CMnd)
63		cmnmnd 19664	. . . . 5 ⊢ (𝐺 ∈ CMnd → 𝐺 ∈ Mnd)
64	61, 62, 63	3syl 18	. . . 4 ⊢ (𝑅 ∈ CRing → 𝐺 ∈ Mnd)
65	64	adantl 482	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝐺 ∈ Mnd)
66	3, 52	syl 17	. . . . 5 ⊢ (𝑅 ∈ CRing → 𝑋 ∈ (Base‘𝑃))
67	66	adantl 482	. . . 4 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑋 ∈ (Base‘𝑃))
68	30, 51	mgpbas 19992	. . . 4 ⊢ (Base‘𝑃) = (Base‘𝐺)
69	67, 68	eleqtrdi 2843	. . 3 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → 𝑋 ∈ (Base‘𝐺))
70		eqid 2732	. . . 4 ⊢ (Base‘𝐺) = (Base‘𝐺)
71		chp0mat.m	. . . 4 ⊢ ↑ = (._g‘𝐺)
72	70, 71	gsumconst 19801	. . 3 ⊢ ((𝐺 ∈ Mnd ∧ 𝑁 ∈ Fin ∧ 𝑋 ∈ (Base‘𝐺)) → (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ 𝑋)) = ((♯‘𝑁) ↑ 𝑋))
73	65, 1, 69, 72	syl3anc 1371	. 2 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝐺 Σ_g (𝑘 ∈ 𝑁 ↦ 𝑋)) = ((♯‘𝑁) ↑ 𝑋))
74	33, 60, 73	3eqtrd 2776	1 ⊢ ((𝑁 ∈ Fin ∧ 𝑅 ∈ CRing) → (𝐶‘ 0 ) = ((♯‘𝑁) ↑ 𝑋))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 396 = wceq 1541 ∈ wcel 2106 ≠ wne 2940 ∀wral 3061 Vcvv 3474 ↦ cmpt 5231 ‘cfv 6543 (class class class)co 7408 ∈ cmpo 7410 Fincfn 8938 ♯chash 14289 Basecbs 17143 0_gc0g 17384 Σ_g cgsu 17385 Mndcmnd 18624 Grpcgrp 18818 -_gcsg 18820 ._gcmg 18949 CMndccmn 19647 mulGrpcmgp 19986 Ringcrg 20055 CRingccrg 20056 algSccascl 21406 var₁cv1 21699 Poly₁cpl1 21700 Mat cmat 21906 CharPlyMat cchpmat 22327

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 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 2703 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-cnex 11165 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-addf 11188 ax-mulf 11189

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-xor 1510 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-tp 4633 df-op 4635 df-ot 4637 df-uni 4909 df-int 4951 df-iun 4999 df-iin 5000 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-se 5632 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-isom 6552 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-of 7669 df-ofr 7670 df-om 7855 df-1st 7974 df-2nd 7975 df-supp 8146 df-tpos 8210 df-frecs 8265 df-wrecs 8296 df-recs 8370 df-rdg 8409 df-1o 8465 df-2o 8466 df-er 8702 df-map 8821 df-pm 8822 df-ixp 8891 df-en 8939 df-dom 8940 df-sdom 8941 df-fin 8942 df-fsupp 9361 df-sup 9436 df-oi 9504 df-card 9933 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-nn 12212 df-2 12274 df-3 12275 df-4 12276 df-5 12277 df-6 12278 df-7 12279 df-8 12280 df-9 12281 df-n0 12472 df-xnn0 12544 df-z 12558 df-dec 12677 df-uz 12822 df-rp 12974 df-fz 13484 df-fzo 13627 df-seq 13966 df-exp 14027 df-hash 14290 df-word 14464 df-lsw 14512 df-concat 14520 df-s1 14545 df-substr 14590 df-pfx 14620 df-splice 14699 df-reverse 14708 df-s2 14798 df-struct 17079 df-sets 17096 df-slot 17114 df-ndx 17126 df-base 17144 df-ress 17173 df-plusg 17209 df-mulr 17210 df-starv 17211 df-sca 17212 df-vsca 17213 df-ip 17214 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-hom 17220 df-cco 17221 df-0g 17386 df-gsum 17387 df-prds 17392 df-pws 17394 df-mre 17529 df-mrc 17530 df-acs 17532 df-mgm 18560 df-sgrp 18609 df-mnd 18625 df-mhm 18670 df-submnd 18671 df-efmnd 18749 df-grp 18821 df-minusg 18822 df-sbg 18823 df-mulg 18950 df-subg 19002 df-ghm 19089 df-gim 19132 df-cntz 19180 df-oppg 19209 df-symg 19234 df-pmtr 19309 df-psgn 19358 df-cmn 19649 df-abl 19650 df-mgp 19987 df-ur 20004 df-ring 20057 df-cring 20058 df-oppr 20149 df-dvdsr 20170 df-unit 20171 df-invr 20201 df-dvr 20214 df-rnghom 20250 df-subrg 20316 df-drng 20358 df-lmod 20472 df-lss 20542 df-sra 20784 df-rgmod 20785 df-cnfld 20944 df-zring 21017 df-zrh 21052 df-dsmm 21286 df-frlm 21301 df-ascl 21409 df-psr 21461 df-mvr 21462 df-mpl 21463 df-opsr 21465 df-psr1 21703 df-vr1 21704 df-ply1 21705 df-mamu 21885 df-mat 21907 df-mdet 22086 df-mat2pmat 22208 df-chpmat 22328

This theorem is referenced by: (None)

W3C validator