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Theorem srgcmn 20277
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 20276 . 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 1162 1 (𝑅 ∈ SRing → 𝑅 ∈ CMnd)
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 400   = wceq 1569  wcel 2142  wral 3078  cfv 6536  (class class class)co 7412  Basecbs 17275  +gcplusg 17316  .rcmulr 17317  0gc0g 17498  Mndcmnd 18798  CMndccmn 19856  mulGrpcmgp 20222  SRingcsrg 20274
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1824  ax-4 1838  ax-5 1939  ax-6 1996  ax-7 2037  ax-8 2144  ax-9 2152  ax-ext 2734  ax-nul 5268
This proof depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1104  df-tru 1572  df-fal 1582  df-ex 1809  df-sb 2096  df-clab 2741  df-cleq 2754  df-clel 2837  df-ne 2958  df-ral 3079  df-rab 3416  df-v 3456  df-sbc 3744  df-dif 3907  df-un 3909  df-ss 3921  df-nul 4286  df-if 4487  df-sn 4589  df-pr 4591  df-op 4595  df-uni 4872  df-br 5109  df-iota 6492  df-fv 6544  df-ov 7415  df-srg 20275
This theorem is used by:  srgmnd  20278  srgcom  20294  srgsummulcr  20311  sgsummulcl  20312  srgbinomlem3  20316  srgbinomlem4  20317  srgbinomlem  20318  gsumvsca2  33556
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