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| Mirrors > Home > MPE Home > Th. List > Mathboxes > tposidf1o | Structured version Visualization version GIF version | ||
| Description: The swap function, or the twisting map, is bijective. (Contributed by Zhi Wang, 5-Oct-2025.) |
| Ref | Expression |
|---|---|
| tposidf1o | ⊢ tpos ( I ↾ (𝐴 × 𝐵)):(𝐵 × 𝐴)–1-1-onto→(𝐴 × 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1oi 6852 | . 2 ⊢ ( I ↾ (𝐴 × 𝐵)):(𝐴 × 𝐵)–1-1-onto→(𝐴 × 𝐵) | |
| 2 | tposf1o 48739 | . 2 ⊢ (( I ↾ (𝐴 × 𝐵)):(𝐴 × 𝐵)–1-1-onto→(𝐴 × 𝐵) → tpos ( I ↾ (𝐴 × 𝐵)):(𝐵 × 𝐴)–1-1-onto→(𝐴 × 𝐵)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ tpos ( I ↾ (𝐴 × 𝐵)):(𝐵 × 𝐴)–1-1-onto→(𝐴 × 𝐵) |
| Colors of variables: wff setvar class |
| Syntax hints: I cid 5544 × cxp 5649 ↾ cres 5653 –1-1-onto→wf1o 6526 tpos ctpos 8218 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5263 ax-nul 5273 ax-pow 5332 ax-pr 5399 ax-un 7723 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-ral 3051 df-rex 3060 df-rab 3414 df-v 3459 df-dif 3927 df-un 3929 df-in 3931 df-ss 3941 df-nul 4307 df-if 4499 df-pw 4575 df-sn 4600 df-pr 4602 df-op 4606 df-uni 4881 df-br 5117 df-opab 5179 df-mpt 5199 df-id 5545 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6480 df-fun 6529 df-fn 6530 df-f 6531 df-f1 6532 df-fo 6533 df-f1o 6534 df-fv 6535 df-1st 7982 df-2nd 7983 df-tpos 8219 |
| This theorem is referenced by: (None) |
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