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Mirrors > Home > MPE Home > Th. List > ecexg | Structured version Visualization version 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 8277 | . 2 ⊢ [𝐴]𝑅 = (𝑅 “ {𝐴}) | |
2 | imaexg 7606 | . 2 ⊢ (𝑅 ∈ 𝐵 → (𝑅 “ {𝐴}) ∈ V) | |
3 | 1, 2 | eqeltrid 2917 | 1 ⊢ (𝑅 ∈ 𝐵 → [𝐴]𝑅 ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 Vcvv 3486 {csn 4553 “ cima 5544 [cec 8273 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5189 ax-nul 5196 ax-pr 5316 ax-un 7447 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3488 df-dif 3927 df-un 3929 df-in 3931 df-ss 3940 df-nul 4280 df-if 4454 df-sn 4554 df-pr 4556 df-op 4560 df-uni 4825 df-br 5053 df-opab 5115 df-xp 5547 df-cnv 5549 df-dm 5551 df-rn 5552 df-res 5553 df-ima 5554 df-ec 8277 |
This theorem is referenced by: ecelqsg 8338 uniqs 8343 eroveu 8378 erov 8380 addsrpr 10483 mulsrpr 10484 quslem 16799 eqgen 18316 qusghm 18378 sylow2blem1 18728 vrgpval 18876 znzrhval 20676 qustgpopn 22711 qustgplem 22712 elpi1 23632 pi1xfrval 23641 pi1xfrcnvlem 23643 pi1xfrcnv 23644 pi1cof 23646 pi1coval 23647 tgjustr 26246 qusker 30925 qusvscpbl 30927 qusscaval 30928 pstmfval 31146 fvline 33612 ecex2 35617 |
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