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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 13355 | . . . . . 6 ⊢ Base Fn V | |
| 2 | fnrel 5459 | . . . . . 6 ⊢ (Base Fn V → Rel Base) | |
| 3 | 1, 2 | ax-mp 5 | . . . . 5 ⊢ Rel Base |
| 4 | relelfvdm 5707 | . . . . 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 2329 | . . 3 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ dom Base) |
| 8 | 7 | elexd 2829 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝑀 ∈ V) |
| 9 | ismgmn0.o | . . 3 ⊢ ⚬ = (+g‘𝑀) | |
| 10 | 6, 9 | ismgm 13620 | . 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 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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