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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 35828 | . . 3 ⊢ Rel ≀ 𝑅 | |
2 | 1 | biantru 533 | . 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 35862 | . . 3 ⊢ ∀𝑥 ∈ dom ≀ 𝑅𝑥 ≀ 𝑅𝑥 | |
4 | symrelcoss3 35865 | . . . 4 ⊢ (∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) ∧ Rel ≀ 𝑅) | |
5 | 4 | simpli 487 | . . 3 ⊢ ∀𝑥∀𝑦(𝑥 ≀ 𝑅𝑦 → 𝑦 ≀ 𝑅𝑥) |
6 | 3, 5 | triantru3 35660 | . 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 35986 | . 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 |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 ∀wal 1536 ∀wral 3106 class class class wbr 5030 dom cdm 5519 Rel wrel 5524 ≀ ccoss 35613 EqvRel weqvrel 35630 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 df-br 5031 df-opab 5093 df-id 5425 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-coss 35819 df-refrel 35912 df-symrel 35940 df-trrel 35970 df-eqvrel 35980 |
This theorem is referenced by: eqvrelcoss2 36014 eqvrelcoss4 36015 |
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