| Mathbox for Peter Mazsa |
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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 39927 | . . 3 ⊢ Disj I | |
| 2 | 1 | disjimi 39957 | . 2 ⊢ EqvRel ≀ I |
| 3 | cossid 39642 | . . 3 ⊢ ≀ I = I | |
| 4 | 3 | eqvreleqi 39759 | . 2 ⊢ ( EqvRel ≀ I ↔ EqvRel I ) |
| 5 | 2, 4 | mpbi 233 | 1 ⊢ EqvRel I |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: I cid 5548 ≀ ccoss 39255 EqvRel weqvrel 39272 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-pr 5394 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ral 3080 df-rex 3090 df-rab 3416 df-v 3455 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-sn 4588 df-pr 4590 df-op 4838 df-br 5106 df-opab 5170 df-id 5549 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-coss 39573 df-refrel 39664 df-cnvrefrel 39679 df-symrel 39696 df-trrel 39730 df-eqvrel 39741 df-disjALTV 39862 |
| This theorem is used by: (None) |
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