Timeline for The set of subgroups of $F_2$
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Jul 14, 2016 at 8:16 | comment | added | Andreas Thom | There are explicit 2-generated groups of $3 \times 3$-matrices over $(\mathbb Z/p\mathbb Z) [t,t^{-1}]$ whose center is isomorphic to $\oplus_{i=1}^{\infty} (\mathbb Z/p\mathbb Z)$. Thus, these groups (and hence $F_2$) have $2^{\aleph_0}$ normal subgroups. | |
| Jul 13, 2016 at 17:55 | vote | accept | Georg Lehner | ||
| Jul 13, 2016 at 17:42 | history | answered | Dave Witte Morris | CC BY-SA 3.0 |