dchrzrh1 - Metamath Proof Explorer

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Theorem dchrzrh1 27170

Description: Value of a Dirichlet character at one. (Contributed by Mario Carneiro, 4-May-2016.)

**Hypotheses**
Ref	Expression
dchrmhm.g	⊢ 𝐺 = (DChr‘𝑁)
dchrmhm.z	⊢ 𝑍 = (ℤ/nℤ‘𝑁)
dchrmhm.b	⊢ 𝐷 = (Base‘𝐺)
dchrelbas4.l	⊢ 𝐿 = (ℤRHom‘𝑍)
dchrzrh1.x	⊢ (𝜑 → 𝑋 ∈ 𝐷)

**Assertion**
Ref	Expression
dchrzrh1	⊢ (𝜑 → (𝑋‘(𝐿‘1)) = 1)

**Proof of Theorem dchrzrh1**
Step	Hyp	Ref	Expression
1		dchrzrh1.x	. . . . . 6 ⊢ (𝜑 → 𝑋 ∈ 𝐷)
2		dchrmhm.g	. . . . . . 7 ⊢ 𝐺 = (DChr‘𝑁)
3		dchrmhm.b	. . . . . . 7 ⊢ 𝐷 = (Base‘𝐺)
4	2, 3	dchrrcl 27166	. . . . . 6 ⊢ (𝑋 ∈ 𝐷 → 𝑁 ∈ ℕ)
5	1, 4	syl 17	. . . . 5 ⊢ (𝜑 → 𝑁 ∈ ℕ)
6	5	nnnn0d 12556	. . . 4 ⊢ (𝜑 → 𝑁 ∈ ℕ₀)
7		dchrmhm.z	. . . . 5 ⊢ 𝑍 = (ℤ/nℤ‘𝑁)
8	7	zncrng 21471	. . . 4 ⊢ (𝑁 ∈ ℕ₀ → 𝑍 ∈ CRing)
9		crngring 20178	. . . 4 ⊢ (𝑍 ∈ CRing → 𝑍 ∈ Ring)
10		dchrelbas4.l	. . . . 5 ⊢ 𝐿 = (ℤRHom‘𝑍)
11		eqid 2728	. . . . 5 ⊢ (1_r‘𝑍) = (1_r‘𝑍)
12	10, 11	zrh1 21431	. . . 4 ⊢ (𝑍 ∈ Ring → (𝐿‘1) = (1_r‘𝑍))
13	6, 8, 9, 12	4syl 19	. . 3 ⊢ (𝜑 → (𝐿‘1) = (1_r‘𝑍))
14	13	fveq2d 6895	. 2 ⊢ (𝜑 → (𝑋‘(𝐿‘1)) = (𝑋‘(1_r‘𝑍)))
15	2, 7, 3	dchrmhm 27167	. . . 4 ⊢ 𝐷 ⊆ ((mulGrp‘𝑍) MndHom (mulGrp‘ℂ_fld))
16	15, 1	sselid 3976	. . 3 ⊢ (𝜑 → 𝑋 ∈ ((mulGrp‘𝑍) MndHom (mulGrp‘ℂ_fld)))
17		eqid 2728	. . . . 5 ⊢ (mulGrp‘𝑍) = (mulGrp‘𝑍)
18	17, 11	ringidval 20116	. . . 4 ⊢ (1_r‘𝑍) = (0_g‘(mulGrp‘𝑍))
19		eqid 2728	. . . . 5 ⊢ (mulGrp‘ℂ_fld) = (mulGrp‘ℂ_fld)
20		cnfld1 21314	. . . . 5 ⊢ 1 = (1_r‘ℂ_fld)
21	19, 20	ringidval 20116	. . . 4 ⊢ 1 = (0_g‘(mulGrp‘ℂ_fld))
22	18, 21	mhm0 18744	. . 3 ⊢ (𝑋 ∈ ((mulGrp‘𝑍) MndHom (mulGrp‘ℂ_fld)) → (𝑋‘(1_r‘𝑍)) = 1)
23	16, 22	syl 17	. 2 ⊢ (𝜑 → (𝑋‘(1_r‘𝑍)) = 1)
24	14, 23	eqtrd 2768	1 ⊢ (𝜑 → (𝑋‘(𝐿‘1)) = 1)

Colors of variables: wff setvar class

Syntax hints: → wi 4 = wceq 1534 ∈ wcel 2099 ‘cfv 6542 (class class class)co 7414 1c1 11133 ℕcn 12236 ℕ₀cn0 12496 Basecbs 17173 MndHom cmhm 18731 mulGrpcmgp 20067 1_rcur 20114 Ringcrg 20166 CRingccrg 20167 ℂ_fldccnfld 21272 ℤRHomczrh 21418 ℤ/nℤczn 21421 DChrcdchr 27158

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7734 ax-cnex 11188 ax-resscn 11189 ax-1cn 11190 ax-icn 11191 ax-addcl 11192 ax-addrcl 11193 ax-mulcl 11194 ax-mulrcl 11195 ax-mulcom 11196 ax-addass 11197 ax-mulass 11198 ax-distr 11199 ax-i2m1 11200 ax-1ne0 11201 ax-1rid 11202 ax-rnegex 11203 ax-rrecex 11204 ax-cnre 11205 ax-pre-lttri 11206 ax-pre-lttrn 11207 ax-pre-ltadd 11208 ax-pre-mulgt0 11209 ax-addf 11211 ax-mulf 11212

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-nfc 2881 df-ne 2937 df-nel 3043 df-ral 3058 df-rex 3067 df-rmo 3372 df-reu 3373 df-rab 3429 df-v 3472 df-sbc 3776 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3964 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 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-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7865 df-1st 7987 df-2nd 7988 df-tpos 8225 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-er 8718 df-ec 8720 df-qs 8724 df-map 8840 df-en 8958 df-dom 8959 df-sdom 8960 df-fin 8961 df-sup 9459 df-inf 9460 df-pnf 11274 df-mnf 11275 df-xr 11276 df-ltxr 11277 df-le 11278 df-sub 11470 df-neg 11471 df-nn 12237 df-2 12299 df-3 12300 df-4 12301 df-5 12302 df-6 12303 df-7 12304 df-8 12305 df-9 12306 df-n0 12497 df-z 12583 df-dec 12702 df-uz 12847 df-fz 13511 df-seq 13993 df-struct 17109 df-sets 17126 df-slot 17144 df-ndx 17156 df-base 17174 df-ress 17203 df-plusg 17239 df-mulr 17240 df-starv 17241 df-sca 17242 df-vsca 17243 df-ip 17244 df-tset 17245 df-ple 17246 df-ds 17248 df-unif 17249 df-0g 17416 df-imas 17483 df-qus 17484 df-mgm 18593 df-sgrp 18672 df-mnd 18688 df-mhm 18733 df-grp 18886 df-minusg 18887 df-sbg 18888 df-mulg 19017 df-subg 19071 df-nsg 19072 df-eqg 19073 df-ghm 19161 df-cmn 19730 df-abl 19731 df-mgp 20068 df-rng 20086 df-ur 20115 df-ring 20168 df-cring 20169 df-oppr 20266 df-rhm 20404 df-subrng 20476 df-subrg 20501 df-lmod 20738 df-lss 20809 df-lsp 20849 df-sra 21051 df-rgmod 21052 df-lidl 21097 df-rsp 21098 df-2idl 21137 df-cnfld 21273 df-zring 21366 df-zrh 21422 df-zn 21425 df-dchr 27159

This theorem is referenced by: dchrmusum2 27420 dchrvmasum2lem 27422

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