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Mirrors > Home > MPE Home > Th. List > ecqs | Structured version Visualization version GIF version |
Description: Equivalence class in terms of quotient set. (Contributed by NM, 29-Jan-1999.) |
Ref | Expression |
---|---|
ecqs.1 | ⊢ 𝑅 ∈ V |
Ref | Expression |
---|---|
ecqs | ⊢ [𝐴]𝑅 = ∪ ({𝐴} / 𝑅) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-ec 8458 | . 2 ⊢ [𝐴]𝑅 = (𝑅 “ {𝐴}) | |
2 | ecqs.1 | . . 3 ⊢ 𝑅 ∈ V | |
3 | uniqs 8524 | . . 3 ⊢ (𝑅 ∈ V → ∪ ({𝐴} / 𝑅) = (𝑅 “ {𝐴})) | |
4 | 2, 3 | ax-mp 5 | . 2 ⊢ ∪ ({𝐴} / 𝑅) = (𝑅 “ {𝐴}) |
5 | 1, 4 | eqtr4i 2769 | 1 ⊢ [𝐴]𝑅 = ∪ ({𝐴} / 𝑅) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1539 ∈ wcel 2108 Vcvv 3422 {csn 4558 ∪ cuni 4836 “ cima 5583 [cec 8454 / cqs 8455 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ral 3068 df-rex 3069 df-rab 3072 df-v 3424 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4254 df-if 4457 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-xp 5586 df-cnv 5588 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-ec 8458 df-qs 8462 |
This theorem is referenced by: (None) |
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