| Mathbox for Peter Mazsa |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > cnvelrels | Structured version Visualization version GIF version | ||
| Description: The converse of a set is an element of the class of relations. (Contributed by Peter Mazsa, 18-Aug-2019.) |
| Ref | Expression |
|---|---|
| cnvelrels | ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ Rels ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relcnv 6078 | . 2 ⊢ Rel ◡𝐴 | |
| 2 | cnvexg 7903 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ V) | |
| 3 | elrelsrel 38485 | . . 3 ⊢ (◡𝐴 ∈ V → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) | |
| 4 | 2, 3 | syl 17 | . 2 ⊢ (𝐴 ∈ 𝑉 → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) |
| 5 | 1, 4 | mpbiri 258 | 1 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ Rels ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2109 Vcvv 3450 ◡ccnv 5640 Rel wrel 5646 Rels crels 38178 |
| 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 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2702 ax-sep 5254 ax-nul 5264 ax-pow 5323 ax-pr 5390 ax-un 7714 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-dif 3920 df-un 3922 df-in 3924 df-ss 3934 df-nul 4300 df-if 4492 df-pw 4568 df-sn 4593 df-pr 4595 df-op 4599 df-uni 4875 df-br 5111 df-opab 5173 df-xp 5647 df-rel 5648 df-cnv 5649 df-dm 5651 df-rn 5652 df-rels 38483 |
| This theorem is referenced by: cosscnvelrels 38495 |
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