Theorem srgmgp 20273

Description: A semiring is a monoid under multiplication. (Contributed by Thierry Arnoux, 21-Mar-2018.)

Hypothesis

Ref	Expression
srgmgp.g	⊢ 𝐺 = (mulGrp‘𝑅)

Assertion

Ref	Expression
srgmgp	⊢ (𝑅 ∈ SRing → 𝐺 ∈ Mnd)

Proof of Theorem srgmgp

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2769	. . 3 ⊢ (Base‘𝑅) = (Base‘𝑅)
2		srgmgp.g	. . 3 ⊢ 𝐺 = (mulGrp‘𝑅)
3		eqid 2769	. . 3 ⊢ (+g‘𝑅) = (+g‘𝑅)
4		eqid 2769	. . 3 ⊢ (.r‘𝑅) = (.r‘𝑅)
5		eqid 2769	. . 3 ⊢ (0g‘𝑅) = (0g‘𝑅)
6	1, 2, 3, 4, 5	issrg 20270	. 2 ⊢ (𝑅 ∈ SRing ↔ (𝑅 ∈ CMnd ∧ 𝐺 ∈ Mnd ∧ ∀𝑥 ∈ (Base‘𝑅)(∀𝑦 ∈ (Base‘𝑅)∀𝑧 ∈ (Base‘𝑅)((𝑥(.r‘𝑅)(𝑦(+g‘𝑅)𝑧)) = ((𝑥(.r‘𝑅)𝑦)(+g‘𝑅)(𝑥(.r‘𝑅)𝑧)) ∧ ((𝑥(+g‘𝑅)𝑦)(.r‘𝑅)𝑧) = ((𝑥(.r‘𝑅)𝑧)(+g‘𝑅)(𝑦(.r‘𝑅)𝑧))) ∧ (((0g‘𝑅)(.r‘𝑅)𝑥) = (0g‘𝑅) ∧ (𝑥(.r‘𝑅)(0g‘𝑅)) = (0g‘𝑅)))))
7	6	simp2bi 1162	1 ⊢ (𝑅 ∈ SRing → 𝐺 ∈ Mnd)

Syntax hints:   → wi 4   ∧ wa 400   = wceq 1567   ∈ wcel 2149  ∀wral 3085  ‘cfv 6537  (class class class)co 7411  Basecbs 17269  +_gcplusg 17310  ._rcmulr 17311  0_gc0g 17492  Mndcmnd 18792  CMndccmn 19850  mulGrpcmgp 20216  SRingcsrg 20268

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-ext 2741  ax-nul 5271

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-sb 2098  df-clab 2748  df-cleq 2761  df-clel 2844  df-ne 2965  df-ral 3086  df-rab 3424  df-v 3465  df-sbc 3754  df-dif 3916  df-un 3918  df-ss 3930  df-nul 4295  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4877  df-br 5114  df-iota 6493  df-fv 6545  df-ov 7414  df-srg 20269

This theorem is referenced by:  srgcl  20275  srgass  20276  srgideu  20277  srgidcl  20281  srgidmlem  20283  srg1zr  20297  srgpcomp  20300  srgpcompp  20301  srgpcomppsc  20302  srg1expzeq1  20307  srgbinomlem1  20308  srgbinomlem4  20311  srgbinomlem  20312