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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 13128 | . . . . . 6 ⊢ Base Fn V | |
| 2 | fnrel 5423 | . . . . . 6 ⊢ (Base Fn V → Rel Base) | |
| 3 | 1, 2 | ax-mp 5 | . . . . 5 ⊢ Rel Base |
| 4 | relelfvdm 5665 | . . . . 5 ⊢ ((Rel Base ∧ 𝐴 ∈ (Base‘𝑀)) → 𝑀 ∈ dom Base) | |
| 5 | 3, 4 | mpan 424 | . . . 4 ⊢ (𝐴 ∈ (Base‘𝑀) → 𝑀 ∈ dom Base) |
| 6 | ismgmn0.b | . . . 4 ⊢ 𝐵 = (Base‘𝑀) | |
| 7 | 5, 6 | eleq2s 2324 | . . 3 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ dom Base) |
| 8 | 7 | elexd 2814 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ V) |
| 9 | ismgmn0.o | . . 3 ⊢ ⚬ = (+g‘𝑀) | |
| 10 | 6, 9 | ismgm 13427 | . 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 1395 ∈ wcel 2200 ∀wral 2508 Vcvv 2800 dom cdm 4721 Rel wrel 4726 Fn wfn 5317 ‘cfv 5322 (class class class)co 6011 Basecbs 13069 +gcplusg 13147 Mgmcmgm 13424 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4203 ax-pow 4260 ax-pr 4295 ax-un 4526 ax-cnex 8111 ax-resscn 8112 ax-1re 8114 ax-addrcl 8117 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2802 df-sbc 3030 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3890 df-int 3925 df-br 4085 df-opab 4147 df-mpt 4148 df-id 4386 df-xp 4727 df-rel 4728 df-cnv 4729 df-co 4730 df-dm 4731 df-rn 4732 df-res 4733 df-iota 5282 df-fun 5324 df-fn 5325 df-fv 5330 df-ov 6014 df-inn 9132 df-2 9190 df-ndx 13072 df-slot 13073 df-base 13075 df-plusg 13160 df-mgm 13426 |
| This theorem is referenced by: mgm1 13440 opifismgmdc 13441 issgrpn0 13475 |
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