Timeline for What is a finite Haken cover of the Seifert–Weber space?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 18, 2017 at 23:55 | answer | added | Ian Agol | timeline score: 9 | |
| Jan 18, 2017 at 23:36 | comment | added | Ian Agol | There are no covers of index $<5$, since the homology is $Z/5^3$ (hence any homomorphism to $S_4$ will be trivial). | |
| Jan 18, 2017 at 23:14 | comment | added | Ryan Budney | It's not clear to me immediately if there are any smaller covers than Hempel's 5-sheeted one. But in principle you could turn this into a fairly simple algorithmic problem by iterating over the covering spaces and applying Reidemeister-Schrier to the corresponding subgroups. | |
| Jan 18, 2017 at 21:33 | vote | accept | user | ||
| Jan 18, 2017 at 21:29 | answer | added | Igor Rivin | timeline score: 8 | |
| Jan 18, 2017 at 19:55 | review | First posts | |||
| Jan 18, 2017 at 20:08 | |||||
| Jan 18, 2017 at 19:53 | history | asked | user | CC BY-SA 3.0 |