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| Mirrors > Home > ILE Home > Th. List > ecexg | GIF version | ||
| Description: An equivalence class modulo a set is a set. (Contributed by NM, 24-Jul-1995.) |
| Ref | Expression |
|---|---|
| ecexg | ⊢ (𝑅 ∈ 𝐵 → [𝐴]𝑅 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ec 6652 | . 2 ⊢ [𝐴]𝑅 = (𝑅 “ {𝐴}) | |
| 2 | imaexg 5058 | . 2 ⊢ (𝑅 ∈ 𝐵 → (𝑅 “ {𝐴}) ∈ V) | |
| 3 | 1, 2 | eqeltrid 2296 | 1 ⊢ (𝑅 ∈ 𝐵 → [𝐴]𝑅 ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2180 Vcvv 2779 {csn 3646 “ cima 4699 [cec 6648 |
| 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 713 ax-5 1473 ax-7 1474 ax-gen 1475 ax-ie1 1519 ax-ie2 1520 ax-8 1530 ax-10 1531 ax-11 1532 ax-i12 1533 ax-bndl 1535 ax-4 1536 ax-17 1552 ax-i9 1556 ax-ial 1560 ax-i5r 1561 ax-13 2182 ax-14 2183 ax-ext 2191 ax-sep 4181 ax-pow 4237 ax-pr 4272 ax-un 4501 |
| This theorem depends on definitions: df-bi 117 df-3an 985 df-tru 1378 df-nf 1487 df-sb 1789 df-eu 2060 df-mo 2061 df-clab 2196 df-cleq 2202 df-clel 2205 df-nfc 2341 df-ral 2493 df-rex 2494 df-v 2781 df-un 3181 df-in 3183 df-ss 3190 df-pw 3631 df-sn 3652 df-pr 3653 df-op 3655 df-uni 3868 df-br 4063 df-opab 4125 df-xp 4702 df-cnv 4704 df-dm 4706 df-rn 4707 df-res 4708 df-ima 4709 df-ec 6652 |
| This theorem is referenced by: ecelqsg 6705 uniqs 6710 eroveu 6743 th3q 6757 dmaddpq 7534 dmmulpq 7535 addnnnq0 7604 mulnnnq0 7605 addsrpr 7900 mulsrpr 7901 quslem 13323 eqgen 13730 qusghm 13785 znzrhval 14576 |
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