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| Mirrors > Home > MPE Home > Th. List > opelcnv | Structured version Visualization version GIF version | ||
| Description: Ordered-pair membership in converse relation. (Contributed by NM, 13-Aug-1995.) |
| Ref | Expression |
|---|---|
| opelcnv.1 | ⊢ 𝐴 ∈ V |
| opelcnv.2 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| opelcnv | ⊢ (〈𝐴, 𝐵〉 ∈ ◡𝑅 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelcnv.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | opelcnv.2 | . 2 ⊢ 𝐵 ∈ V | |
| 3 | opelcnvg 5854 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (〈𝐴, 𝐵〉 ∈ ◡𝑅 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅)) | |
| 4 | 1, 2, 3 | mp2an 702 | 1 ⊢ (〈𝐴, 𝐵〉 ∈ ◡𝑅 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 208 ∈ wcel 2144 Vcvv 3456 〈cop 4590 ◡ccnv 5648 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1817 ax-4 1831 ax-5 1932 ax-6 1989 ax-7 2030 ax-8 2146 ax-9 2154 ax-ext 2736 ax-sep 5248 ax-pr 5392 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1101 df-tru 1565 df-fal 1575 df-ex 1802 df-sb 2093 df-clab 2743 df-cleq 2756 df-clel 2839 df-rab 3417 df-v 3458 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4288 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5103 df-opab 5165 df-cnv 5657 |
| This theorem is referenced by: cnvopab 6126 cnvdif 6129 dfrel2 6177 cnvcnvsn 6208 cnvresima 6219 dfco2 6234 cnviin 6275 fcnvres 6743 cnvf1olem 8091 cnvimadfsn 8154 dmtpos 8220 dftpos4 8227 tpostpos 8228 brsdom2 9075 fsumcom2 15803 fprodcom2 16016 gsumcom2 20017 metustsym 24617 gsumhashmul 33249 cnvco1 36114 cnvco2 36115 cnviun 44231 tposideq 49514 |
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