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| Mirrors > Home > ILE Home > Th. List > isabl | GIF version | ||
| Description: The predicate "is an Abelian (commutative) group". (Contributed by NM, 17-Oct-2011.) |
| Ref | Expression |
|---|---|
| isabl | ⊢ (𝐺 ∈ Abel ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ CMnd)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-abl 14067 | . 2 ⊢ Abel = (Grp ∩ CMnd) | |
| 2 | 1 | elin2 3417 | 1 ⊢ (𝐺 ∈ Abel ↔ (𝐺 ∈ Grp ∧ 𝐺 ∈ CMnd)) |
| Colors of variables: wff set class |
| Syntax hints: ∧ wa 104 ↔ wb 105 ∈ wcel 2209 Grpcgrp 13782 CMndccmn 14064 Abelcabl 14065 |
| 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-ext 2220 |
| This theorem depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-v 2823 df-in 3226 df-abl 14067 |
| This theorem is referenced by: ablgrp 14069 ablcmn 14071 isabl2 14074 ablpropd 14076 isabld 14079 ghmabl 14109 unitabl 14397 |
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