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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eqvrelid | Structured version Visualization version GIF version | ||
| Description: The identity relation is an equivalence relation. (Contributed by Peter Mazsa, 15-Apr-2019.) (Revised by Peter Mazsa, 31-Dec-2021.) |
| Ref | Expression |
|---|---|
| eqvrelid | ⊢ EqvRel I |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | disjALTVid 38953 | . . 3 ⊢ Disj I | |
| 2 | 1 | disjimi 38980 | . 2 ⊢ EqvRel ≀ I |
| 3 | cossid 38682 | . . 3 ⊢ ≀ I = I | |
| 4 | 3 | eqvreleqi 38799 | . 2 ⊢ ( EqvRel ≀ I ↔ EqvRel I ) |
| 5 | 2, 4 | mpbi 230 | 1 ⊢ EqvRel I |
| Colors of variables: wff setvar class |
| Syntax hints: I cid 5516 ≀ ccoss 38322 EqvRel weqvrel 38339 |
| 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 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 |
| 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-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-sn 4579 df-pr 4581 df-op 4585 df-br 5097 df-opab 5159 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-coss 38613 df-refrel 38704 df-cnvrefrel 38719 df-symrel 38736 df-trrel 38770 df-eqvrel 38781 df-disjALTV 38903 |
| This theorem is referenced by: (None) |
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