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Mirrors > Home > MPE Home > Th. List > dchrsum | Structured version Visualization version GIF version |
Description: An orthogonality relation for Dirichlet characters: the sum of all the values of a Dirichlet character 𝑋 is 0 if 𝑋 is non-principal and ϕ(𝑛) otherwise. Part of Theorem 6.5.1 of [Shapiro] p. 230. (Contributed by Mario Carneiro, 28-Apr-2016.) |
Ref | Expression |
---|---|
dchrsum.g | ⊢ 𝐺 = (DChr‘𝑁) |
dchrsum.z | ⊢ 𝑍 = (ℤ/nℤ‘𝑁) |
dchrsum.d | ⊢ 𝐷 = (Base‘𝐺) |
dchrsum.1 | ⊢ 1 = (0g‘𝐺) |
dchrsum.x | ⊢ (𝜑 → 𝑋 ∈ 𝐷) |
dchrsum.b | ⊢ 𝐵 = (Base‘𝑍) |
Ref | Expression |
---|---|
dchrsum | ⊢ (𝜑 → Σ𝑎 ∈ 𝐵 (𝑋‘𝑎) = if(𝑋 = 1 , (ϕ‘𝑁), 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dchrsum.b | . . . . 5 ⊢ 𝐵 = (Base‘𝑍) | |
2 | eqid 2610 | . . . . 5 ⊢ (Unit‘𝑍) = (Unit‘𝑍) | |
3 | 1, 2 | unitss 18483 | . . . 4 ⊢ (Unit‘𝑍) ⊆ 𝐵 |
4 | 3 | a1i 11 | . . 3 ⊢ (𝜑 → (Unit‘𝑍) ⊆ 𝐵) |
5 | dchrsum.g | . . . . 5 ⊢ 𝐺 = (DChr‘𝑁) | |
6 | dchrsum.z | . . . . 5 ⊢ 𝑍 = (ℤ/nℤ‘𝑁) | |
7 | dchrsum.d | . . . . 5 ⊢ 𝐷 = (Base‘𝐺) | |
8 | dchrsum.x | . . . . 5 ⊢ (𝜑 → 𝑋 ∈ 𝐷) | |
9 | 5, 6, 7, 1, 8 | dchrf 24767 | . . . 4 ⊢ (𝜑 → 𝑋:𝐵⟶ℂ) |
10 | 3 | sseli 3564 | . . . 4 ⊢ (𝑎 ∈ (Unit‘𝑍) → 𝑎 ∈ 𝐵) |
11 | ffvelrn 6265 | . . . 4 ⊢ ((𝑋:𝐵⟶ℂ ∧ 𝑎 ∈ 𝐵) → (𝑋‘𝑎) ∈ ℂ) | |
12 | 9, 10, 11 | syl2an 493 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ (Unit‘𝑍)) → (𝑋‘𝑎) ∈ ℂ) |
13 | eldif 3550 | . . . 4 ⊢ (𝑎 ∈ (𝐵 ∖ (Unit‘𝑍)) ↔ (𝑎 ∈ 𝐵 ∧ ¬ 𝑎 ∈ (Unit‘𝑍))) | |
14 | 8 | adantr 480 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐵) → 𝑋 ∈ 𝐷) |
15 | simpr 476 | . . . . . . . 8 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐵) → 𝑎 ∈ 𝐵) | |
16 | 5, 6, 7, 1, 2, 14, 15 | dchrn0 24775 | . . . . . . 7 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐵) → ((𝑋‘𝑎) ≠ 0 ↔ 𝑎 ∈ (Unit‘𝑍))) |
17 | 16 | biimpd 218 | . . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐵) → ((𝑋‘𝑎) ≠ 0 → 𝑎 ∈ (Unit‘𝑍))) |
18 | 17 | necon1bd 2800 | . . . . 5 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝐵) → (¬ 𝑎 ∈ (Unit‘𝑍) → (𝑋‘𝑎) = 0)) |
19 | 18 | impr 647 | . . . 4 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝐵 ∧ ¬ 𝑎 ∈ (Unit‘𝑍))) → (𝑋‘𝑎) = 0) |
20 | 13, 19 | sylan2b 491 | . . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ (𝐵 ∖ (Unit‘𝑍))) → (𝑋‘𝑎) = 0) |
21 | 5, 7 | dchrrcl 24765 | . . . 4 ⊢ (𝑋 ∈ 𝐷 → 𝑁 ∈ ℕ) |
22 | 6, 1 | znfi 19727 | . . . 4 ⊢ (𝑁 ∈ ℕ → 𝐵 ∈ Fin) |
23 | 8, 21, 22 | 3syl 18 | . . 3 ⊢ (𝜑 → 𝐵 ∈ Fin) |
24 | 4, 12, 20, 23 | fsumss 14303 | . 2 ⊢ (𝜑 → Σ𝑎 ∈ (Unit‘𝑍)(𝑋‘𝑎) = Σ𝑎 ∈ 𝐵 (𝑋‘𝑎)) |
25 | dchrsum.1 | . . 3 ⊢ 1 = (0g‘𝐺) | |
26 | 5, 6, 7, 25, 8, 2 | dchrsum2 24793 | . 2 ⊢ (𝜑 → Σ𝑎 ∈ (Unit‘𝑍)(𝑋‘𝑎) = if(𝑋 = 1 , (ϕ‘𝑁), 0)) |
27 | 24, 26 | eqtr3d 2646 | 1 ⊢ (𝜑 → Σ𝑎 ∈ 𝐵 (𝑋‘𝑎) = if(𝑋 = 1 , (ϕ‘𝑁), 0)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ≠ wne 2780 ∖ cdif 3537 ⊆ wss 3540 ifcif 4036 ⟶wf 5800 ‘cfv 5804 Fincfn 7841 ℂcc 9813 0cc0 9815 ℕcn 10897 Σcsu 14264 ϕcphi 15307 Basecbs 15695 0gc0g 15923 Unitcui 18462 ℤ/nℤczn 19670 DChrcdchr 24757 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-inf2 8421 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 ax-addf 9894 ax-mulf 9895 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-fal 1481 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-se 4998 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-isom 5813 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-of 6795 df-om 6958 df-1st 7059 df-2nd 7060 df-tpos 7239 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-oadd 7451 df-er 7629 df-ec 7631 df-qs 7635 df-map 7746 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-sup 8231 df-inf 8232 df-oi 8298 df-card 8648 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-xnn0 11241 df-z 11255 df-dec 11370 df-uz 11564 df-rp 11709 df-fz 12198 df-fzo 12335 df-fl 12455 df-mod 12531 df-seq 12664 df-exp 12723 df-hash 12980 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 df-clim 14067 df-sum 14265 df-dvds 14822 df-gcd 15055 df-phi 15309 df-struct 15697 df-ndx 15698 df-slot 15699 df-base 15700 df-sets 15701 df-ress 15702 df-plusg 15781 df-mulr 15782 df-starv 15783 df-sca 15784 df-vsca 15785 df-ip 15786 df-tset 15787 df-ple 15788 df-ds 15791 df-unif 15792 df-0g 15925 df-imas 15991 df-qus 15992 df-mgm 17065 df-sgrp 17107 df-mnd 17118 df-mhm 17158 df-grp 17248 df-minusg 17249 df-sbg 17250 df-mulg 17364 df-subg 17414 df-nsg 17415 df-eqg 17416 df-ghm 17481 df-cmn 18018 df-abl 18019 df-mgp 18313 df-ur 18325 df-ring 18372 df-cring 18373 df-oppr 18446 df-dvdsr 18464 df-unit 18465 df-invr 18495 df-rnghom 18538 df-subrg 18601 df-lmod 18688 df-lss 18754 df-lsp 18793 df-sra 18993 df-rgmod 18994 df-lidl 18995 df-rsp 18996 df-2idl 19053 df-cnfld 19568 df-zring 19638 df-zrh 19671 df-zn 19674 df-dchr 24758 |
This theorem is referenced by: dchrhash 24796 dchr2sum 24798 dchrisumlem1 24978 |
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