Mathbox for Peter Mazsa |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > dfcomember | Structured version Visualization version GIF version |
Description: Alternate definition of the comember equivalence relation. (Contributed by Peter Mazsa, 28-Nov-2022.) |
Ref | Expression |
---|---|
dfcomember | ⊢ ( CoMembEr 𝐴 ↔ ∼ 𝐴 ErALTV 𝐴) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-comember 36886 | . 2 ⊢ ( CoMembEr 𝐴 ↔ ≀ (◡ E ↾ 𝐴) ErALTV 𝐴) | |
2 | df-coels 36632 | . . 3 ⊢ ∼ 𝐴 = ≀ (◡ E ↾ 𝐴) | |
3 | 2 | erALTVeq1i 36890 | . 2 ⊢ ( ∼ 𝐴 ErALTV 𝐴 ↔ ≀ (◡ E ↾ 𝐴) ErALTV 𝐴) |
4 | 1, 3 | bitr4i 278 | 1 ⊢ ( CoMembEr 𝐴 ↔ ∼ 𝐴 ErALTV 𝐴) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 E cep 5505 ◡ccnv 5599 ↾ cres 5602 ≀ ccoss 36387 ∼ ccoels 36388 ErALTV werALTV 36413 CoMembEr wcomember 36415 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pr 5361 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-clab 2714 df-cleq 2728 df-clel 2814 df-ral 3062 df-rex 3071 df-rab 3341 df-v 3439 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-sn 4566 df-pr 4568 df-op 4572 df-br 5082 df-opab 5144 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-ec 8531 df-qs 8535 df-coels 36632 df-refrel 36732 df-symrel 36764 df-trrel 36794 df-eqvrel 36805 df-dmqs 36859 df-erALTV 36884 df-comember 36886 |
This theorem is referenced by: dfcomember2 36893 |
Copyright terms: Public domain | W3C validator |