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| Mirrors > Home > MPE Home > Th. List > Mathboxes > symrelcoss | Structured version Visualization version GIF version | ||
| Description: The class of cosets by 𝑅 is symmetric. (Contributed by Peter Mazsa, 20-Dec-2021.) |
| Ref | Expression |
|---|---|
| symrelcoss | ⊢ SymRel ≀ 𝑅 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | symrelcoss2 38502 | . 2 ⊢ (◡ ≀ 𝑅 ⊆ ≀ 𝑅 ∧ Rel ≀ 𝑅) | |
| 2 | dfsymrel2 38585 | . 2 ⊢ ( SymRel ≀ 𝑅 ↔ (◡ ≀ 𝑅 ⊆ ≀ 𝑅 ∧ Rel ≀ 𝑅)) | |
| 3 | 1, 2 | mpbir 231 | 1 ⊢ SymRel ≀ 𝑅 |
| Colors of variables: wff setvar class |
| Syntax hints: ∧ wa 395 ⊆ wss 3902 ◡ccnv 5615 Rel wrel 5621 ≀ ccoss 38214 SymRel wsymrel 38226 |
| 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-ext 2703 ax-sep 5234 ax-nul 5244 ax-pr 5370 |
| 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 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4476 df-sn 4577 df-pr 4579 df-op 4583 df-br 5092 df-opab 5154 df-xp 5622 df-rel 5623 df-cnv 5624 df-dm 5626 df-rn 5627 df-res 5628 df-coss 38447 df-symrel 38580 |
| This theorem is referenced by: eqvrelcoss 38653 |
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