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Theorem ismgmn0 13621
Description: The predicate "is a magma" for a structure with a nonempty base set. (Contributed by AV, 29-Jan-2020.)
Hypotheses
Ref Expression
ismgmn0.b 𝐵 = (Base‘𝑀)
ismgmn0.o = (+g𝑀)
Assertion
Ref Expression
ismgmn0 (𝐴𝐵 → (𝑀 ∈ Mgm ↔ ∀𝑥𝐵𝑦𝐵 (𝑥 𝑦) ∈ 𝐵))
Distinct variable groups:   𝑥,𝐵,𝑦   𝑥,𝑀,𝑦   𝑥, ,𝑦
Allowed substitution hints:   𝐴(𝑥,𝑦)

Proof of Theorem ismgmn0
StepHypRef Expression
1 basfn 13355 . . . . . 6 Base Fn V
2 fnrel 5459 . . . . . 6 (Base Fn V → Rel Base)
31, 2ax-mp 5 . . . . 5 Rel Base
4 relelfvdm 5707 . . . . 5 ((Rel Base ∧ 𝐴 ∈ (Base‘𝑀)) → 𝑀 ∈ dom Base)
53, 4mpan 424 . . . 4 (𝐴 ∈ (Base‘𝑀) → 𝑀 ∈ dom Base)
6 ismgmn0.b . . . 4 𝐵 = (Base‘𝑀)
75, 6eleq2s 2329 . . 3 (𝐴𝐵𝑀 ∈ dom Base)
87elexd 2829 . 2 (𝐴𝐵𝑀 ∈ V)
9 ismgmn0.o . . 3 = (+g𝑀)
106, 9ismgm 13620 . 2 (𝑀 ∈ V → (𝑀 ∈ Mgm ↔ ∀𝑥𝐵𝑦𝐵 (𝑥 𝑦) ∈ 𝐵))
118, 10syl 14 1 (𝐴𝐵 → (𝑀 ∈ Mgm ↔ ∀𝑥𝐵𝑦𝐵 (𝑥 𝑦) ∈ 𝐵))
Colors of variables: wff set class
Syntax hints:  wi 4  wb 105   = wceq 1398  wcel 2205  wral 2522  Vcvv 2815  dom cdm 4754  Rel wrel 4759   Fn wfn 5352  cfv 5357  (class class class)co 6058  Basecbs 13296  +gcplusg 13374  Mgmcmgm 13617
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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4233  ax-pow 4292  ax-pr 4327  ax-un 4559  ax-cnex 8234  ax-resscn 8235  ax-1re 8237  ax-addrcl 8240
This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ral 2527  df-rex 2528  df-v 2817  df-sbc 3046  df-un 3218  df-in 3220  df-ss 3227  df-pw 3676  df-sn 3700  df-pr 3701  df-op 3703  df-uni 3920  df-int 3955  df-br 4115  df-opab 4177  df-mpt 4178  df-id 4419  df-xp 4760  df-rel 4761  df-cnv 4762  df-co 4763  df-dm 4764  df-rn 4765  df-res 4766  df-iota 5317  df-fun 5359  df-fn 5360  df-fv 5365  df-ov 6061  df-inn 9255  df-2 9313  df-ndx 13299  df-slot 13300  df-base 13302  df-plusg 13387  df-mgm 13619
This theorem is referenced by:  mgm1  13633  opifismgmdc  13634  issgrpn0  13668
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