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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 5833 | . 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 5627 |
| 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 5232 ax-pr 5374 |
| 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 5636 |
| This theorem is referenced by: cnvopab 6098 cnvopabOLD 6099 cnvdif 6105 dfrel2 6151 cnvcnvsn 6181 cnvresima 6192 dfco2 6207 cnviin 6248 fcnvres 6715 cnvf1olem 8057 cnvimadfsn 8119 dmtpos 8185 dftpos4 8192 tpostpos 8193 brsdom2 9036 fsumcom2 15733 fprodcom2 15946 gsumcom2 19947 metustsym 24517 gsumhashmul 33125 cnvco1 35938 cnvco2 35939 cnviun 44074 tposideq 49354 |
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