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| Mirrors > Home > MPE Home > Th. List > Mathboxes > tposid | Structured version Visualization version GIF version | ||
| Description: Swap an ordered pair. (Contributed by Zhi Wang, 5-Oct-2025.) |
| Ref | Expression |
|---|---|
| tposid | ⊢ (𝑋tpos I 𝑌) = 〈𝑌, 𝑋〉 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovtpos 8185 | . 2 ⊢ (𝑋tpos I 𝑌) = (𝑌 I 𝑋) | |
| 2 | df-ov 7363 | . 2 ⊢ (𝑌 I 𝑋) = ( I ‘〈𝑌, 𝑋〉) | |
| 3 | opex 5413 | . . 3 ⊢ 〈𝑌, 𝑋〉 ∈ V | |
| 4 | fvi 6911 | . . 3 ⊢ (〈𝑌, 𝑋〉 ∈ V → ( I ‘〈𝑌, 𝑋〉) = 〈𝑌, 𝑋〉) | |
| 5 | 3, 4 | ax-mp 5 | . 2 ⊢ ( I ‘〈𝑌, 𝑋〉) = 〈𝑌, 𝑋〉 |
| 6 | 1, 2, 5 | 3eqtri 2764 | 1 ⊢ (𝑋tpos I 𝑌) = 〈𝑌, 𝑋〉 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 Vcvv 3441 〈cop 4587 I cid 5519 ‘cfv 6493 (class class class)co 7360 tpos ctpos 8169 |
| 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-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 |
| 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-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3062 df-rab 3401 df-v 3443 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6449 df-fun 6495 df-fn 6496 df-fv 6501 df-ov 7363 df-tpos 8170 |
| This theorem is referenced by: (None) |
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