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Theorem srgcmn 20241
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 2764 . . 3 (Base‘𝑅) = (Base‘𝑅)
2 eqid 2764 . . 3 (mulGrp‘𝑅) = (mulGrp‘𝑅)
3 eqid 2764 . . 3 (+g𝑅) = (+g𝑅)
4 eqid 2764 . . 3 (.r𝑅) = (.r𝑅)
5 eqid 2764 . . 3 (0g𝑅) = (0g𝑅)
61, 2, 3, 4, 5issrg 20240 . 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 1159 1 (𝑅 ∈ SRing → 𝑅 ∈ CMnd)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 399   = wceq 1562  wcel 2144  wral 3078  cfv 6523  (class class class)co 7398  Basecbs 17247  +gcplusg 17288  .rcmulr 17289  0gc0g 17470  Mndcmnd 18770  CMndccmn 19822  mulGrpcmgp 20188  SRingcsrg 20238
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1817  ax-4 1831  ax-5 1932  ax-6 1989  ax-7 2030  ax-8 2146  ax-9 2154  ax-ext 2736  ax-nul 5258
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1101  df-tru 1565  df-fal 1575  df-ex 1802  df-sb 2093  df-clab 2743  df-cleq 2756  df-clel 2839  df-ne 2960  df-ral 3079  df-rab 3417  df-v 3458  df-sbc 3747  df-dif 3909  df-un 3911  df-ss 3923  df-nul 4288  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-br 5103  df-iota 6479  df-fv 6531  df-ov 7401  df-srg 20239
This theorem is referenced by:  srgmnd  20242  srgcom  20258  srgsummulcr  20275  sgsummulcl  20276  srgbinomlem3  20280  srgbinomlem4  20281  srgbinomlem  20282  gsumvsca2  33409
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