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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 39263 | . . 3 ⊢ Rel ≀ 𝑅 | |
| 2 | 1 | biantru 539 | . 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 39302 | . . 3 ⊢ ∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 | |
| 4 | symrelcoss3 39305 | . . . 4 ⊢ (∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ Rel ≀ 𝑅) | |
| 5 | 4 | simpli 489 | . . 3 ⊢ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) |
| 6 | 3, 5 | triantru3 38986 | . 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 39425 | . 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 307 | 1 ⊢ ( EqvRel ≀ 𝑅 ↔ ∀𝑥∀𝑦∀𝑧((𝑥 ≀ 𝑅𝑦 ∧ 𝑦 ≀ 𝑅𝑧) → 𝑥 ≀ 𝑅𝑧)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 ∀wal 1568 ∀wral 3078 class class class wbr 5107 dom cdm 5659 Rel wrel 5664 ≀ ccoss 38933 EqvRel weqvrel 38950 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-11 2194 ax-ext 2734 ax-sep 5255 ax-pr 5402 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-br 5108 df-opab 5172 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-coss 39251 df-refrel 39342 df-symrel 39374 df-trrel 39408 df-eqvrel 39419 |
| This theorem is used by: eqvrelcoss2 39453 eqvrelcoss4 39454 disjim 39634 |
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