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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eqvreldmqs2 | Structured version Visualization version GIF version | ||
| Description: Two ways to express comember equivalence relation on its domain quotient. (Contributed by Peter Mazsa, 30-Dec-2024.) |
| Ref | Expression |
|---|---|
| eqvreldmqs2 | ⊢ (( EqvRel ≀ (◡ E ↾ 𝐴) ∧ (dom ≀ (◡ E ↾ 𝐴) / ≀ (◡ E ↾ 𝐴)) = 𝐴) ↔ ( EqvRel ∼ 𝐴 ∧ (∪ 𝐴 / ∼ 𝐴) = 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-coels 38393 | . . . 4 ⊢ ∼ 𝐴 = ≀ (◡ E ↾ 𝐴) | |
| 2 | 1 | eqvreleqi 38584 | . . 3 ⊢ ( EqvRel ∼ 𝐴 ↔ EqvRel ≀ (◡ E ↾ 𝐴)) |
| 3 | 2 | bicomi 224 | . 2 ⊢ ( EqvRel ≀ (◡ E ↾ 𝐴) ↔ EqvRel ∼ 𝐴) |
| 4 | dmqs1cosscnvepreseq 38644 | . 2 ⊢ ((dom ≀ (◡ E ↾ 𝐴) / ≀ (◡ E ↾ 𝐴)) = 𝐴 ↔ (∪ 𝐴 / ∼ 𝐴) = 𝐴) | |
| 5 | 3, 4 | anbi12i 628 | 1 ⊢ (( EqvRel ≀ (◡ E ↾ 𝐴) ∧ (dom ≀ (◡ E ↾ 𝐴) / ≀ (◡ E ↾ 𝐴)) = 𝐴) ↔ ( EqvRel ∼ 𝐴 ∧ (∪ 𝐴 / ∼ 𝐴) = 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∧ wa 395 = wceq 1540 ∪ cuni 4858 E cep 5518 ◡ccnv 5618 dom cdm 5619 ↾ cres 5621 / cqs 8624 ≀ ccoss 38159 ∼ ccoels 38160 EqvRel weqvrel 38176 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5235 ax-nul 5245 ax-pr 5371 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3395 df-v 3438 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4285 df-if 4477 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-br 5093 df-opab 5155 df-eprel 5519 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-ec 8627 df-qs 8631 df-coss 38392 df-coels 38393 df-refrel 38493 df-symrel 38525 df-trrel 38555 df-eqvrel 38566 |
| This theorem is referenced by: cpet2 38819 |
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