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Theorem cmnmnd 13707
Description: A commutative monoid is a monoid. (Contributed by Mario Carneiro, 6-Jan-2015.)
Assertion
Ref Expression
cmnmnd (𝐺 ∈ CMnd → 𝐺 ∈ Mnd)

Proof of Theorem cmnmnd
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 eqid 2206 . . 3 (Base‘𝐺) = (Base‘𝐺)
2 eqid 2206 . . 3 (+g𝐺) = (+g𝐺)
31, 2iscmn 13699 . 2 (𝐺 ∈ CMnd ↔ (𝐺 ∈ Mnd ∧ ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(𝑥(+g𝐺)𝑦) = (𝑦(+g𝐺)𝑥)))
43simplbi 274 1 (𝐺 ∈ CMnd → 𝐺 ∈ Mnd)
Colors of variables: wff set class
Syntax hints:  wi 4   = wceq 1373  wcel 2177  wral 2485  cfv 5279  (class class class)co 5956  Basecbs 12902  +gcplusg 12979  Mndcmnd 13318  CMndccmn 13690
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2188
This theorem depends on definitions:  df-bi 117  df-3an 983  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-ral 2490  df-rex 2491  df-rab 2494  df-v 2775  df-un 3174  df-sn 3643  df-pr 3644  df-op 3646  df-uni 3856  df-br 4051  df-iota 5240  df-fv 5287  df-ov 5959  df-cmn 13692
This theorem is referenced by:  cmn32  13710  cmn4  13711  cmn12  13712  cmnmndd  13714  rinvmod  13715  ghmcmn  13733  srgmnd  13799
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