Timeline for Examples of finite polyhedra with finitely generated simple fundamental group
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Aug 20, 2022 at 22:50 | history | edited | HJRW | CC BY-SA 4.0 |
Corrected terminology. Added Radu's example.
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| Aug 20, 2022 at 22:48 | comment | added | HJRW | @YCor: You're right, I had misremembered. "Almost simple" means something different. (en.wikipedia.org/wiki/Almost_simple_group) In a 1993 paper, Bhattacharjee used the term "nearly simple" for a slightly stronger notion. I suspect that Higman's group may be "nearly simple" in Bhattacharjee's sense, but will edit for now. | |
| Aug 20, 2022 at 12:33 | comment | added | M.Ramana | Thank you so much for your nice answer. | |
| Aug 20, 2022 at 11:35 | vote | accept | M.Ramana | ||
| Aug 20, 2022 at 11:13 | comment | added | Carl-Fredrik Nyberg Brodda | Caprace & Radu recently found a “smaller” example of the form $F_5 \ast_{F_{25}} F_5$ and even $F_3 \ast_{F_{11}} F_3$. | |
| Aug 20, 2022 at 9:13 | comment | added | YCor | Does the terminology "almost simple" for group with no nontrivial finite quotient really exist? Higman's group is so far from being simple... | |
| Aug 19, 2022 at 21:14 | history | answered | HJRW | CC BY-SA 4.0 |