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Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > cntrcrng | Structured version Visualization version GIF version |
Description: The center of a ring is a commutative ring. (Contributed by Thierry Arnoux, 21-Aug-2023.) |
Ref | Expression |
---|---|
cntrcrng.z | ⊢ 𝑍 = (𝑅 ↾s (Cntr‘(mulGrp‘𝑅))) |
Ref | Expression |
---|---|
cntrcrng | ⊢ (𝑅 ∈ Ring → 𝑍 ∈ CRing) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2726 | . . . . . 6 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
2 | eqid 2726 | . . . . . 6 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
3 | 1, 2 | mgpbas 20045 | . . . . 5 ⊢ (Base‘𝑅) = (Base‘(mulGrp‘𝑅)) |
4 | eqid 2726 | . . . . 5 ⊢ (Cntz‘(mulGrp‘𝑅)) = (Cntz‘(mulGrp‘𝑅)) | |
5 | 3, 4 | cntrval 19235 | . . . 4 ⊢ ((Cntz‘(mulGrp‘𝑅))‘(Base‘𝑅)) = (Cntr‘(mulGrp‘𝑅)) |
6 | ssid 3999 | . . . . 5 ⊢ (Base‘𝑅) ⊆ (Base‘𝑅) | |
7 | 2, 1, 4 | cntzsubr 20508 | . . . . 5 ⊢ ((𝑅 ∈ Ring ∧ (Base‘𝑅) ⊆ (Base‘𝑅)) → ((Cntz‘(mulGrp‘𝑅))‘(Base‘𝑅)) ∈ (SubRing‘𝑅)) |
8 | 6, 7 | mpan2 688 | . . . 4 ⊢ (𝑅 ∈ Ring → ((Cntz‘(mulGrp‘𝑅))‘(Base‘𝑅)) ∈ (SubRing‘𝑅)) |
9 | 5, 8 | eqeltrrid 2832 | . . 3 ⊢ (𝑅 ∈ Ring → (Cntr‘(mulGrp‘𝑅)) ∈ (SubRing‘𝑅)) |
10 | cntrcrng.z | . . . 4 ⊢ 𝑍 = (𝑅 ↾s (Cntr‘(mulGrp‘𝑅))) | |
11 | 10 | subrgring 20476 | . . 3 ⊢ ((Cntr‘(mulGrp‘𝑅)) ∈ (SubRing‘𝑅) → 𝑍 ∈ Ring) |
12 | 9, 11 | syl 17 | . 2 ⊢ (𝑅 ∈ Ring → 𝑍 ∈ Ring) |
13 | fvex 6898 | . . . 4 ⊢ (Cntr‘(mulGrp‘𝑅)) ∈ V | |
14 | 10, 1 | mgpress 20054 | . . . 4 ⊢ ((𝑅 ∈ Ring ∧ (Cntr‘(mulGrp‘𝑅)) ∈ V) → ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) = (mulGrp‘𝑍)) |
15 | 13, 14 | mpan2 688 | . . 3 ⊢ (𝑅 ∈ Ring → ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) = (mulGrp‘𝑍)) |
16 | 1 | ringmgp 20144 | . . . 4 ⊢ (𝑅 ∈ Ring → (mulGrp‘𝑅) ∈ Mnd) |
17 | eqid 2726 | . . . . 5 ⊢ ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) = ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) | |
18 | 17 | cntrcmnd 19762 | . . . 4 ⊢ ((mulGrp‘𝑅) ∈ Mnd → ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) ∈ CMnd) |
19 | 16, 18 | syl 17 | . . 3 ⊢ (𝑅 ∈ Ring → ((mulGrp‘𝑅) ↾s (Cntr‘(mulGrp‘𝑅))) ∈ CMnd) |
20 | 15, 19 | eqeltrrd 2828 | . 2 ⊢ (𝑅 ∈ Ring → (mulGrp‘𝑍) ∈ CMnd) |
21 | eqid 2726 | . . 3 ⊢ (mulGrp‘𝑍) = (mulGrp‘𝑍) | |
22 | 21 | iscrng 20145 | . 2 ⊢ (𝑍 ∈ CRing ↔ (𝑍 ∈ Ring ∧ (mulGrp‘𝑍) ∈ CMnd)) |
23 | 12, 20, 22 | sylanbrc 582 | 1 ⊢ (𝑅 ∈ Ring → 𝑍 ∈ CRing) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1533 ∈ wcel 2098 Vcvv 3468 ⊆ wss 3943 ‘cfv 6537 (class class class)co 7405 Basecbs 17153 ↾s cress 17182 Mndcmnd 18667 Cntzccntz 19231 Cntrccntr 19232 CMndccmn 19700 mulGrpcmgp 20039 Ringcrg 20138 CRingccrg 20139 SubRingcsubrg 20469 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2163 ax-ext 2697 ax-rep 5278 ax-sep 5292 ax-nul 5299 ax-pow 5356 ax-pr 5420 ax-un 7722 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 396 df-or 845 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2704 df-cleq 2718 df-clel 2804 df-nfc 2879 df-ne 2935 df-nel 3041 df-ral 3056 df-rex 3065 df-rmo 3370 df-reu 3371 df-rab 3427 df-v 3470 df-sbc 3773 df-csb 3889 df-dif 3946 df-un 3948 df-in 3950 df-ss 3960 df-pss 3962 df-nul 4318 df-if 4524 df-pw 4599 df-sn 4624 df-pr 4626 df-op 4630 df-uni 4903 df-iun 4992 df-br 5142 df-opab 5204 df-mpt 5225 df-tr 5259 df-id 5567 df-eprel 5573 df-po 5581 df-so 5582 df-fr 5624 df-we 5626 df-xp 5675 df-rel 5676 df-cnv 5677 df-co 5678 df-dm 5679 df-rn 5680 df-res 5681 df-ima 5682 df-pred 6294 df-ord 6361 df-on 6362 df-lim 6363 df-suc 6364 df-iota 6489 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-riota 7361 df-ov 7408 df-oprab 7409 df-mpo 7410 df-om 7853 df-2nd 7975 df-frecs 8267 df-wrecs 8298 df-recs 8372 df-rdg 8411 df-er 8705 df-en 8942 df-dom 8943 df-sdom 8944 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-sets 17106 df-slot 17124 df-ndx 17136 df-base 17154 df-ress 17183 df-plusg 17219 df-mulr 17220 df-0g 17396 df-mgm 18573 df-sgrp 18652 df-mnd 18668 df-submnd 18714 df-grp 18866 df-minusg 18867 df-subg 19050 df-cntz 19233 df-cntr 19234 df-cmn 19702 df-abl 19703 df-mgp 20040 df-rng 20058 df-ur 20087 df-ring 20140 df-cring 20141 df-subrng 20446 df-subrg 20471 |
This theorem is referenced by: (None) |
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