| Mathbox for Zhi Wang |
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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 8222 | . 2 ⊢ (𝑋tpos I 𝑌) = (𝑌 I 𝑋) | |
| 2 | df-ov 7392 | . 2 ⊢ (𝑌 I 𝑋) = ( I ‘〈𝑌, 𝑋〉) | |
| 3 | opex 5426 | . . 3 ⊢ 〈𝑌, 𝑋〉 ∈ V | |
| 4 | fvi 6939 | . . 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 2757 | 1 ⊢ (𝑋tpos I 𝑌) = 〈𝑌, 𝑋〉 |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 Vcvv 3450 〈cop 4597 I cid 5534 ‘cfv 6513 (class class class)co 7389 tpos ctpos 8206 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pow 5322 ax-pr 5389 ax-un 7713 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rab 3409 df-v 3452 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-nul 4299 df-if 4491 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-br 5110 df-opab 5172 df-mpt 5191 df-id 5535 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-iota 6466 df-fun 6515 df-fn 6516 df-fv 6521 df-ov 7392 df-tpos 8207 |
| This theorem is referenced by: (None) |
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