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Theorem ringacl 20362
Description: Closure of the addition operation of a ring. (Contributed by Mario Carneiro, 14-Jan-2014.)
Hypotheses
Ref Expression
ringacl.b 𝐵 = (Base‘𝑅)
ringacl.p + = (+g𝑅)
Assertion
Ref Expression
ringacl ((𝑅 ∈ Ring ∧ 𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) ∈ 𝐵)

Proof of Theorem ringacl
StepHypRef Expression
1 ringgrp 20321 . 2 (𝑅 ∈ Ring → 𝑅 ∈ Grp)
2 ringacl.b . . 3 𝐵 = (Base‘𝑅)
3 ringacl.p . . 3 + = (+g𝑅)
42, 3grpcl 19009 . 2 ((𝑅 ∈ Grp ∧ 𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) ∈ 𝐵)
51, 4syl3an1 1181 1 ((𝑅 ∈ Ring ∧ 𝑋𝐵𝑌𝐵) → (𝑋 + 𝑌) ∈ 𝐵)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1103   = wceq 1570  wcel 2143  cfv 6538  (class class class)co 7412  Basecbs 17270  +gcplusg 17311  Grpcgrp 19001  Ringcrg 20316
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-ext 2735  ax-nul 5270
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-sb 2097  df-clab 2742  df-cleq 2755  df-clel 2838  df-ne 2959  df-ral 3080  df-rex 3090  df-rab 3417  df-v 3457  df-sbc 3746  df-dif 3909  df-un 3911  df-ss 3923  df-nul 4288  df-if 4489  df-sn 4591  df-pr 4593  df-op 4597  df-uni 4874  df-br 5111  df-iota 6494  df-fv 6546  df-ov 7415  df-mgm 18699  df-sgrp 18778  df-mnd 18794  df-grp 19004  df-ring 20318
This theorem is referenced by:  ringcomlem  20363  ringcom  20364  ringlghm  20396  ringrghm  20397  imasring  20413  qusring2  20417  cntzsubr  20692  srngadd  20935  issrngd  20939  lmodprop2d  21026  prdslmodd  21071  rhmpreimaidl  21397  frobrhm  21706  ip2subdi  21775  psrlmod  22090  mpfind  22247  coe1add  22406  mat1ghm  22621  scmatghm  22671  mdetrlin2  22745  mdetunilem5  22754  cpmatacl  22854  mdegaddle  26212  deg1addle2  26240  deg1add  26241  ply1divex  26275  deg1addlt  33871  dvhlveclem  41863  baerlem3lem1  42462  mendlmod  43899  cznrng  49009  lmod1lem3  49252
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