| 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 6110 | . 2 ⊢ Rel ◡𝐴 | |
| 2 | cnvexg 7924 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ V) | |
| 3 | elrelsrel 39041 | . . 3 ⊢ (◡𝐴 ∈ V → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) | |
| 4 | 2, 3 | syl 18 | . 2 ⊢ (𝐴 ∈ 𝑉 → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) |
| 5 | 1, 4 | mpbiri 261 | 1 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ Rels ) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 ∈ wcel 2150 Vcvv 3462 ◡ccnv 5664 Rel wrel 5670 Rels crels 38784 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1823 ax-4 1837 ax-5 1938 ax-6 1995 ax-7 2036 ax-8 2152 ax-9 2160 ax-ext 2742 ax-sep 5262 ax-pow 5340 ax-pr 5408 ax-un 7736 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1571 df-fal 1581 df-ex 1808 df-sb 2099 df-clab 2749 df-cleq 2762 df-clel 2845 df-ral 3087 df-rex 3097 df-rab 3424 df-v 3464 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-xp 5671 df-rel 5672 df-cnv 5673 df-dm 5675 df-rn 5676 df-rels 39039 |
| This theorem is referenced by: cosscnvelrels 39176 |
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