Timeline for Surveys on unknotting number
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 19, 2021 at 14:50 | history | edited | gmvh |
Added top-level tag
|
|
| Feb 19, 2021 at 9:37 | answer | added | Carl-Fredrik Nyberg Brodda | timeline score: 1 | |
| Feb 19, 2021 at 7:04 | history | edited | Francesco Polizzi | CC BY-SA 4.0 |
edited title
|
| Feb 19, 2021 at 6:41 | history | edited | Francesco Polizzi | CC BY-SA 4.0 |
added 10 characters in body
|
| Feb 19, 2021 at 1:38 | comment | added | Ryan Budney | I believe there are examples where the unknotting arc isn't part of any minimal-crossing diagram. It's probably helpful to think of the unknotting arcs as embedded arcs in 3-space that connect the over/under crossing -- you are asking if these can be made to be vertical striaght-lines in a minimal planar diagram. Unfortunately I don't know these examples off-hand, but they typically appear in papers discussing unknotting number. i.e. from this perspective you can talk about unknotting arcs with respect to any diagram. | |
| Feb 19, 2021 at 1:22 | history | asked | user8749 | CC BY-SA 4.0 |