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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 6012 | . 2 ⊢ Rel ◡𝐴 | |
2 | cnvexg 7771 | . . 3 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ V) | |
3 | elrelsrel 36605 | . . 3 ⊢ (◡𝐴 ∈ V → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) | |
4 | 2, 3 | syl 17 | . 2 ⊢ (𝐴 ∈ 𝑉 → (◡𝐴 ∈ Rels ↔ Rel ◡𝐴)) |
5 | 1, 4 | mpbiri 257 | 1 ⊢ (𝐴 ∈ 𝑉 → ◡𝐴 ∈ Rels ) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∈ wcel 2106 Vcvv 3432 ◡ccnv 5588 Rel wrel 5594 Rels crels 36335 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-12 2171 ax-ext 2709 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-sb 2068 df-clab 2716 df-cleq 2730 df-clel 2816 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-opab 5137 df-xp 5595 df-rel 5596 df-cnv 5597 df-dm 5599 df-rn 5600 df-rels 36603 |
This theorem is referenced by: cosscnvelrels 36615 |
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