Timeline for Word problem for fundamental group of submanifolds of the 4-sphere
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Feb 27, 2015 at 3:45 | history | edited | Autumn Kent | CC BY-SA 3.0 |
added 462 characters in body
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| Aug 18, 2010 at 4:45 | vote | accept | Ryan Budney | ||
| Jul 21, 2010 at 16:54 | comment | added | Autumn Kent | Yeah, that seems reasonable. | |
| Jul 21, 2010 at 15:45 | comment | added | Sam Nead | It is open whether or not there is an algorithm to detect unknotted two-spheres in $S^4$. Perhaps this is related? | |
| Jul 21, 2010 at 15:13 | comment | added | Autumn Kent | Gordon said that he had a definite reason for wanting to know this, but he also said he couldn't remember what the reason was. I think it's a great question. | |
| Jul 21, 2010 at 15:07 | comment | added | Sam Nead | To make the question more extreme: Are there two-spheres in $S^4$ whose complements have groups with unsolvable word problems? | |
| Jul 21, 2010 at 14:55 | history | edited | Autumn Kent | CC BY-SA 2.5 |
deleted 5 characters in body
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| Jul 21, 2010 at 14:29 | history | answered | Autumn Kent | CC BY-SA 2.5 |