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Theorem srgcmn 20329
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 2762 . . 3 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2762 . . 3 (mulGrp‘𝑅) = (mulGrp‘𝑅)
3 eqid 2762 . . 3 (+g𝑅) = (+g𝑅)
4 eqid 2762 . . 3 (.r𝑅) = (.r𝑅)
5 eqid 2762 . . 3 (0g𝑅) = (0g𝑅)
61, 2, 3, 4, 5issrg 20328 . 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 1163 1 (𝑅 ∈ SRing → 𝑅 ∈ CMnd)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401   = wceq 1570  wcel 2145  wral 3078  cfv 6537  (class class class)co 7416  Basecbs 17305  +gcplusg 17346  .rcmulr 17347  0gc0g 17528  Mndcmnd 18838  CMndccmn 19908  mulGrpcmgp 20274  SRingcsrg 20326
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-ext 2734  ax-nul 5267
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2100  df-clab 2741  df-cleq 2754  df-clel 2837  df-ne 2958  df-ral 3079  df-rab 3415  df-v 3455  df-sbc 3743  df-dif 3905  df-un 3907  df-ss 3919  df-nul 4283  df-if 4486  df-sn 4588  df-pr 4590  df-op 4594  df-uni 4871  df-br 5108  df-iota 6493  df-fv 6545  df-ov 7419  df-srg 20327
This theorem is used by:  srgmnd  20330  srgcom  20346  srgsummulcr  20363  sgsummulcl  20364  srgbinomlem3  20368  srgbinomlem4  20369  srgbinomlem  20370  gsumvsca2  33654
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