Timeline for Centre of group with deficiency at least two (Progress on Murasugi's conjecture)
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Oct 4 at 3:32 | comment | added | Carl-Fredrik Nyberg Brodda | @YCor They are the same thing. The deficiency of a one-relator group with presentation $\langle a_1, \dots, a_n \mid R = 1 \rangle$ where $R$ is non-trivial is $n-1$, as proved by Rapaport. So Murasugi's result for one-relator groups is for all one-relator groups with $n \geq 3$. | |
| Oct 3 at 17:15 | history | became hot network question | |||
| Oct 3 at 16:25 | comment | added | YCor | "For 1-relator groups": do you mean, for groups which are both 1-relator and deficiency $\ge 2$ (possibly for another presentation), or for groups with a 1-relator presentation of deficiency $\ge 2$? | |
| Oct 3 at 10:06 | answer | added | jonathan | timeline score: 8 | |
| Oct 3 at 9:35 | answer | added | Giles Gardam | timeline score: 7 | |
| Oct 3 at 9:12 | history | asked | Carl-Fredrik Nyberg Brodda | CC BY-SA 4.0 |