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Mirrors > Home > MPE Home > Th. List > chrdvds | Structured version Visualization version GIF version |
Description: The ℤ ring homomorphism is zero only at multiples of the characteristic. (Contributed by Mario Carneiro, 23-Sep-2015.) |
Ref | Expression |
---|---|
chrcl.c | ⊢ 𝐶 = (chr‘𝑅) |
chrid.l | ⊢ 𝐿 = (ℤRHom‘𝑅) |
chrid.z | ⊢ 0 = (0g‘𝑅) |
Ref | Expression |
---|---|
chrdvds | ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (𝐶 ∥ 𝑁 ↔ (𝐿‘𝑁) = 0 )) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2739 | . . . . 5 ⊢ (od‘𝑅) = (od‘𝑅) | |
2 | eqid 2739 | . . . . 5 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
3 | chrcl.c | . . . . 5 ⊢ 𝐶 = (chr‘𝑅) | |
4 | 1, 2, 3 | chrval 20710 | . . . 4 ⊢ ((od‘𝑅)‘(1r‘𝑅)) = 𝐶 |
5 | 4 | breq1i 5085 | . . 3 ⊢ (((od‘𝑅)‘(1r‘𝑅)) ∥ 𝑁 ↔ 𝐶 ∥ 𝑁) |
6 | ringgrp 19769 | . . . . 5 ⊢ (𝑅 ∈ Ring → 𝑅 ∈ Grp) | |
7 | 6 | adantr 480 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → 𝑅 ∈ Grp) |
8 | eqid 2739 | . . . . . 6 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
9 | 8, 2 | ringidcl 19788 | . . . . 5 ⊢ (𝑅 ∈ Ring → (1r‘𝑅) ∈ (Base‘𝑅)) |
10 | 9 | adantr 480 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (1r‘𝑅) ∈ (Base‘𝑅)) |
11 | simpr 484 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → 𝑁 ∈ ℤ) | |
12 | eqid 2739 | . . . . 5 ⊢ (.g‘𝑅) = (.g‘𝑅) | |
13 | chrid.z | . . . . 5 ⊢ 0 = (0g‘𝑅) | |
14 | 8, 1, 12, 13 | oddvds 19136 | . . . 4 ⊢ ((𝑅 ∈ Grp ∧ (1r‘𝑅) ∈ (Base‘𝑅) ∧ 𝑁 ∈ ℤ) → (((od‘𝑅)‘(1r‘𝑅)) ∥ 𝑁 ↔ (𝑁(.g‘𝑅)(1r‘𝑅)) = 0 )) |
15 | 7, 10, 11, 14 | syl3anc 1369 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (((od‘𝑅)‘(1r‘𝑅)) ∥ 𝑁 ↔ (𝑁(.g‘𝑅)(1r‘𝑅)) = 0 )) |
16 | 5, 15 | bitr3id 284 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (𝐶 ∥ 𝑁 ↔ (𝑁(.g‘𝑅)(1r‘𝑅)) = 0 )) |
17 | chrid.l | . . . 4 ⊢ 𝐿 = (ℤRHom‘𝑅) | |
18 | 17, 12, 2 | zrhmulg 20692 | . . 3 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (𝐿‘𝑁) = (𝑁(.g‘𝑅)(1r‘𝑅))) |
19 | 18 | eqeq1d 2741 | . 2 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → ((𝐿‘𝑁) = 0 ↔ (𝑁(.g‘𝑅)(1r‘𝑅)) = 0 )) |
20 | 16, 19 | bitr4d 281 | 1 ⊢ ((𝑅 ∈ Ring ∧ 𝑁 ∈ ℤ) → (𝐶 ∥ 𝑁 ↔ (𝐿‘𝑁) = 0 )) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1541 ∈ wcel 2109 class class class wbr 5078 ‘cfv 6430 (class class class)co 7268 ℤcz 12302 ∥ cdvds 15944 Basecbs 16893 0gc0g 17131 Grpcgrp 18558 .gcmg 18681 odcod 19113 1rcur 19718 Ringcrg 19764 ℤRHomczrh 20682 chrcchr 20684 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1801 ax-4 1815 ax-5 1916 ax-6 1974 ax-7 2014 ax-8 2111 ax-9 2119 ax-10 2140 ax-11 2157 ax-12 2174 ax-ext 2710 ax-rep 5213 ax-sep 5226 ax-nul 5233 ax-pow 5291 ax-pr 5355 ax-un 7579 ax-cnex 10911 ax-resscn 10912 ax-1cn 10913 ax-icn 10914 ax-addcl 10915 ax-addrcl 10916 ax-mulcl 10917 ax-mulrcl 10918 ax-mulcom 10919 ax-addass 10920 ax-mulass 10921 ax-distr 10922 ax-i2m1 10923 ax-1ne0 10924 ax-1rid 10925 ax-rnegex 10926 ax-rrecex 10927 ax-cnre 10928 ax-pre-lttri 10929 ax-pre-lttrn 10930 ax-pre-ltadd 10931 ax-pre-mulgt0 10932 ax-pre-sup 10933 ax-addf 10934 ax-mulf 10935 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1544 df-fal 1554 df-ex 1786 df-nf 1790 df-sb 2071 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2817 df-nfc 2890 df-ne 2945 df-nel 3051 df-ral 3070 df-rex 3071 df-reu 3072 df-rmo 3073 df-rab 3074 df-v 3432 df-sbc 3720 df-csb 3837 df-dif 3894 df-un 3896 df-in 3898 df-ss 3908 df-pss 3910 df-nul 4262 df-if 4465 df-pw 4540 df-sn 4567 df-pr 4569 df-tp 4571 df-op 4573 df-uni 4845 df-iun 4931 df-br 5079 df-opab 5141 df-mpt 5162 df-tr 5196 df-id 5488 df-eprel 5494 df-po 5502 df-so 5503 df-fr 5543 df-we 5545 df-xp 5594 df-rel 5595 df-cnv 5596 df-co 5597 df-dm 5598 df-rn 5599 df-res 5600 df-ima 5601 df-pred 6199 df-ord 6266 df-on 6267 df-lim 6268 df-suc 6269 df-iota 6388 df-fun 6432 df-fn 6433 df-f 6434 df-f1 6435 df-fo 6436 df-f1o 6437 df-fv 6438 df-riota 7225 df-ov 7271 df-oprab 7272 df-mpo 7273 df-om 7701 df-1st 7817 df-2nd 7818 df-frecs 8081 df-wrecs 8112 df-recs 8186 df-rdg 8225 df-1o 8281 df-er 8472 df-map 8591 df-en 8708 df-dom 8709 df-sdom 8710 df-fin 8711 df-sup 9162 df-inf 9163 df-pnf 10995 df-mnf 10996 df-xr 10997 df-ltxr 10998 df-le 10999 df-sub 11190 df-neg 11191 df-div 11616 df-nn 11957 df-2 12019 df-3 12020 df-4 12021 df-5 12022 df-6 12023 df-7 12024 df-8 12025 df-9 12026 df-n0 12217 df-z 12303 df-dec 12420 df-uz 12565 df-rp 12713 df-fz 13222 df-fl 13493 df-mod 13571 df-seq 13703 df-exp 13764 df-cj 14791 df-re 14792 df-im 14793 df-sqrt 14927 df-abs 14928 df-dvds 15945 df-struct 16829 df-sets 16846 df-slot 16864 df-ndx 16876 df-base 16894 df-ress 16923 df-plusg 16956 df-mulr 16957 df-starv 16958 df-tset 16962 df-ple 16963 df-ds 16965 df-unif 16966 df-0g 17133 df-mgm 18307 df-sgrp 18356 df-mnd 18367 df-mhm 18411 df-grp 18561 df-minusg 18562 df-sbg 18563 df-mulg 18682 df-subg 18733 df-ghm 18813 df-od 19117 df-cmn 19369 df-mgp 19702 df-ur 19719 df-ring 19766 df-cring 19767 df-rnghom 19940 df-subrg 20003 df-cnfld 20579 df-zring 20652 df-zrh 20686 df-chr 20688 |
This theorem is referenced by: chrnzr 20715 chrrhm 20716 domnchr 20717 znchr 20751 |
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