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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 6803 | . 2 ⊢ [𝐴]𝑅 = (𝑅 “ {𝐴}) | |
| 2 | imaexg 5138 | . 2 ⊢ (𝑅 ∈ 𝐵 → (𝑅 “ {𝐴}) ∈ V) | |
| 3 | 1, 2 | eqeltrid 2325 | 1 ⊢ (𝑅 ∈ 𝐵 → [𝐴]𝑅 ∈ V) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2209 Vcvv 2821 {csn 3708 “ cima 4775 [cec 6799 |
| 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 4247 ax-pow 4309 ax-pr 4344 ax-un 4576 |
| 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-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3714 df-pr 3715 df-op 3717 df-uni 3934 df-br 4129 df-opab 4191 df-xp 4778 df-cnv 4780 df-dm 4782 df-rn 4783 df-res 4784 df-ima 4785 df-ec 6803 |
| This theorem is referenced by: ecelqsg 6856 uniqs 6861 eroveu 6894 th3q 6908 dmaddpq 7740 dmmulpq 7741 addnnnq0 7810 mulnnnq0 7811 addsrpr 8106 mulsrpr 8107 quslem 13628 eqgen 14013 qusghm 14068 znzrhval 14965 |
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