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Theorem srgcmn 19934
Description: A semiring is a commutative monoid. (Contributed by Thierry Arnoux, 21-Mar-2018.)
Assertion
Ref Expression
srgcmn (𝑅 ∈ SRing → 𝑅 ∈ CMnd)

Proof of Theorem srgcmn
Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2731 . . 3 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2731 . . 3 (mulGrp‘𝑅) = (mulGrp‘𝑅)
3 eqid 2731 . . 3 (+g𝑅) = (+g𝑅)
4 eqid 2731 . . 3 (.r𝑅) = (.r𝑅)
5 eqid 2731 . . 3 (0g𝑅) = (0g𝑅)
61, 2, 3, 4, 5issrg 19933 . 2 (𝑅 ∈ SRing ↔ (𝑅 ∈ CMnd ∧ (mulGrp‘𝑅) ∈ Mnd ∧ ∀𝑥 ∈ (Base‘𝑅)(∀𝑦 ∈ (Base‘𝑅)∀𝑧 ∈ (Base‘𝑅)((𝑥(.r𝑅)(𝑦(+g𝑅)𝑧)) = ((𝑥(.r𝑅)𝑦)(+g𝑅)(𝑥(.r𝑅)𝑧)) ∧ ((𝑥(+g𝑅)𝑦)(.r𝑅)𝑧) = ((𝑥(.r𝑅)𝑧)(+g𝑅)(𝑦(.r𝑅)𝑧))) ∧ (((0g𝑅)(.r𝑅)𝑥) = (0g𝑅) ∧ (𝑥(.r𝑅)(0g𝑅)) = (0g𝑅)))))
76simp1bi 1145 1 (𝑅 ∈ SRing → 𝑅 ∈ CMnd)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 396   = wceq 1541  wcel 2106  wral 3060  cfv 6501  (class class class)co 7362  Basecbs 17094  +gcplusg 17147  .rcmulr 17148  0gc0g 17335  Mndcmnd 18570  CMndccmn 19576  mulGrpcmgp 19910  SRingcsrg 19931
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2702  ax-nul 5268
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-sb 2068  df-clab 2709  df-cleq 2723  df-clel 2809  df-ne 2940  df-ral 3061  df-rab 3406  df-v 3448  df-sbc 3743  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4288  df-if 4492  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4871  df-br 5111  df-iota 6453  df-fv 6509  df-ov 7365  df-srg 19932
This theorem is referenced by:  srgmnd  19935  srgcom  19951  srgsummulcr  19968  sgsummulcl  19969  srgbinomlem3  19973  srgbinomlem4  19974  srgbinomlem  19975  gsumvsca2  32132
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