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Mirrors > Home > MPE Home > Th. List > subrgring | Structured version Visualization version GIF version |
Description: A subring is a ring. (Contributed by Stefan O'Rear, 27-Nov-2014.) |
Ref | Expression |
---|---|
subrgring.1 | ⊢ 𝑆 = (𝑅 ↾s 𝐴) |
Ref | Expression |
---|---|
subrgring | ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝑆 ∈ Ring) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | subrgring.1 | . 2 ⊢ 𝑆 = (𝑅 ↾s 𝐴) | |
2 | eqid 2821 | . . . . 5 ⊢ (Base‘𝑅) = (Base‘𝑅) | |
3 | eqid 2821 | . . . . 5 ⊢ (1r‘𝑅) = (1r‘𝑅) | |
4 | 2, 3 | issubrg 19535 | . . . 4 ⊢ (𝐴 ∈ (SubRing‘𝑅) ↔ ((𝑅 ∈ Ring ∧ (𝑅 ↾s 𝐴) ∈ Ring) ∧ (𝐴 ⊆ (Base‘𝑅) ∧ (1r‘𝑅) ∈ 𝐴))) |
5 | 4 | simplbi 500 | . . 3 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝑅 ∈ Ring ∧ (𝑅 ↾s 𝐴) ∈ Ring)) |
6 | 5 | simprd 498 | . 2 ⊢ (𝐴 ∈ (SubRing‘𝑅) → (𝑅 ↾s 𝐴) ∈ Ring) |
7 | 1, 6 | eqeltrid 2917 | 1 ⊢ (𝐴 ∈ (SubRing‘𝑅) → 𝑆 ∈ Ring) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 398 = wceq 1537 ∈ wcel 2114 ⊆ wss 3936 ‘cfv 6355 (class class class)co 7156 Basecbs 16483 ↾s cress 16484 1rcur 19251 Ringcrg 19297 SubRingcsubrg 19531 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-id 5460 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-iota 6314 df-fun 6357 df-fv 6363 df-ov 7159 df-subrg 19533 |
This theorem is referenced by: subrgcrng 19539 subrgsubg 19541 subrg1 19545 subrgmcl 19547 subrgsubm 19548 subrguss 19550 subrginv 19551 subrgunit 19553 subrgugrp 19554 issubdrg 19560 subsubrg 19561 resrhm 19564 subdrgint 19582 abvres 19610 sralmod 19959 subrgnzr 20041 issubassa3 20097 subrgpsr 20199 mplring 20232 subrgmvrf 20243 subrgascl 20278 subrgasclcl 20279 evlssca 20302 evlsvar 20303 evlsgsumadd 20304 evlsvarpw 20307 mpfconst 20314 mpfproj 20315 mpfsubrg 20316 gsumply1subr 20402 ply1ring 20416 evls1sca 20486 evls1gsumadd 20487 evls1varpw 20490 gzrngunitlem 20610 gzrngunit 20611 dmatcrng 21111 scmatcrng 21130 scmatsgrp1 21131 scmatsrng1 21132 scmatmhm 21143 scmatrhm 21144 scmatrngiso 21145 m2cpmrhm 21354 isclmp 23701 reefgim 25038 amgmlem 25567 cntrcrng 30697 amgmwlem 44923 |
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