| Mathbox for Peter Mazsa |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eqvrelcoss3 | Structured version Visualization version GIF version | ||
| Description: Two ways to express equivalent cosets. (Contributed by Peter Mazsa, 28-Apr-2019.) |
| Ref | Expression |
|---|---|
| eqvrelcoss3 | ⊢ ( EqvRel ≀ 𝑅 ↔ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcoss 38535 | . . 3 ⊢ Rel ≀ 𝑅 | |
| 2 | 1 | biantru 529 | . 2 ⊢ ((∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 ∧ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) ↔ ((∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 ∧ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) ∧ Rel ≀ 𝑅)) |
| 3 | refrelcosslem 38574 | . . 3 ⊢ ∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 | |
| 4 | symrelcoss3 38577 | . . . 4 ⊢ (∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ Rel ≀ 𝑅) | |
| 5 | 4 | simpli 483 | . . 3 ⊢ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) |
| 6 | 3, 5 | triantru3 38281 | . 2 ⊢ (∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧) ↔ (∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 ∧ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧))) |
| 7 | dfeqvrel3 38697 | . 2 ⊢ ( EqvRel ≀ 𝑅 ↔ ((∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 ∧ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) ∧ Rel ≀ 𝑅)) | |
| 8 | 2, 6, 7 | 3bitr4ri 304 | 1 ⊢ ( EqvRel ≀ 𝑅 ↔ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 ∀wal 1539 ∀wral 3047 class class class wbr 5089 dom cdm 5614 Rel wrel 5619 ≀ ccoss 38232 EqvRel weqvrel 38249 |
| 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 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-11 2160 ax-ext 2703 ax-sep 5232 ax-nul 5242 ax-pr 5368 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4281 df-if 4473 df-sn 4574 df-pr 4576 df-op 4580 df-br 5090 df-opab 5152 df-id 5509 df-xp 5620 df-rel 5621 df-cnv 5622 df-co 5623 df-dm 5624 df-rn 5625 df-res 5626 df-coss 38523 df-refrel 38614 df-symrel 38646 df-trrel 38680 df-eqvrel 38691 |
| This theorem is referenced by: eqvrelcoss2 38725 eqvrelcoss4 38726 disjim 38889 |
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