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| Mirrors > Home > ILE Home > Th. List > ismgmn0 | GIF version | ||
| Description: The predicate "is a magma" for a structure with a nonempty base set. (Contributed by AV, 29-Jan-2020.) |
| Ref | Expression |
|---|---|
| ismgmn0.b | ⊢ 𝐵 = (Base‘𝑀) |
| ismgmn0.o | ⊢ ⚬ = (+g‘𝑀) |
| Ref | Expression |
|---|---|
| ismgmn0 | ⊢ (𝐴 ∈ 𝐵 → (𝑀 ∈ Mgm ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥 ⚬ 𝑦) ∈ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | basfn 13389 | . . . . . 6 ⊢ Base Fn V | |
| 2 | fnrel 5474 | . . . . . 6 ⊢ (Base Fn V → Rel Base) | |
| 3 | 1, 2 | ax-mp 5 | . . . . 5 ⊢ Rel Base |
| 4 | relelfvdm 5722 | . . . . 5 ⊢ ((Rel Base ∧ 𝐴 ∈ (Base‘𝑀)) → 𝑀 ∈ dom Base) | |
| 5 | 3, 4 | mpan 428 | . . . 4 ⊢ (𝐴 ∈ (Base‘𝑀) → 𝑀 ∈ dom Base) |
| 6 | ismgmn0.b | . . . 4 ⊢ 𝐵 = (Base‘𝑀) | |
| 7 | 5, 6 | eleq2s 2333 | . . 3 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ dom Base) |
| 8 | 7 | elexd 2835 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ V) |
| 9 | ismgmn0.o | . . 3 ⊢ ⚬ = (+g‘𝑀) | |
| 10 | 6, 9 | ismgm 13654 | . 2 ⊢ (𝑀 ∈ V → (𝑀 ∈ Mgm ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥 ⚬ 𝑦) ∈ 𝐵)) |
| 11 | 8, 10 | syl 14 | 1 ⊢ (𝐴 ∈ 𝐵 → (𝑀 ∈ Mgm ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵 (𝑥 ⚬ 𝑦) ∈ 𝐵)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1402 ∈ wcel 2209 ∀wral 2528 Vcvv 2821 dom cdm 4769 Rel wrel 4774 Fn wfn 5367 ‘cfv 5372 (class class class)co 6075 Basecbs 13330 +gcplusg 13408 Mgmcmgm 13651 |
| 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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-cnex 8260 ax-resscn 8261 ax-1re 8263 ax-addrcl 8266 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-sbc 3052 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-iota 5332 df-fun 5374 df-fn 5375 df-fv 5380 df-ov 6078 df-inn 9284 df-2 9342 df-ndx 13333 df-slot 13334 df-base 13336 df-plusg 13421 df-mgm 13653 |
| This theorem is referenced by: mgm1 13667 opifismgmdc 13668 issgrpn0 13697 |
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