| 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 38881 | . . 3 ⊢ Rel ≀ 𝑅 | |
| 2 | 1 | biantru 534 | . 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 38920 | . . 3 ⊢ ∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 | |
| 4 | symrelcoss3 38923 | . . . 4 ⊢ (∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ Rel ≀ 𝑅) | |
| 5 | 4 | simpli 484 | . . 3 ⊢ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) |
| 6 | 3, 5 | triantru3 38604 | . 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 39043 | . 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 305 | 1 ⊢ ( EqvRel ≀ 𝑅 ↔ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 207 ∧ wa 396 ∧ w3a 1092 ∀wal 1545 ∀wral 3054 class class class wbr 5079 dom cdm 5625 Rel wrel 5630 ≀ ccoss 38551 EqvRel weqvrel 38568 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-11 2168 ax-ext 2712 ax-sep 5225 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-br 5080 df-opab 5142 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-coss 38869 df-refrel 38960 df-symrel 38992 df-trrel 39026 df-eqvrel 39037 |
| This theorem is referenced by: eqvrelcoss2 39071 eqvrelcoss4 39072 disjim 39252 |
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