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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 5827 | . 2 ⊢ ((𝐴 ∈ V ∧ 𝐵 ∈ V) → (〈𝐴, 𝐵〉 ∈ ◡𝑅 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅)) | |
| 4 | 1, 2, 3 | mp2an 693 | 1 ⊢ (〈𝐴, 𝐵〉 ∈ ◡𝑅 ↔ 〈𝐵, 𝐴〉 ∈ 𝑅) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∈ wcel 2114 Vcvv 3430 〈cop 4574 ◡ccnv 5621 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5231 ax-pr 5368 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-br 5087 df-opab 5149 df-cnv 5630 |
| This theorem is referenced by: cnvopab 6092 cnvopabOLD 6093 cnvdif 6099 dfrel2 6145 cnvcnvsn 6175 cnvresima 6186 dfco2 6201 cnviin 6242 fcnvres 6709 cnvf1olem 8051 cnvimadfsn 8113 dmtpos 8179 dftpos4 8186 tpostpos 8187 brsdom2 9030 fsumcom2 15698 fprodcom2 15908 gsumcom2 19908 metustsym 24498 gsumhashmul 33133 cnvco1 35947 cnvco2 35948 cnviun 44080 tposideq 49321 |
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