Timeline for Examples of residually-finite groups
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Jun 19, 2020 at 13:30 | comment | added | YCor | Actually Hall's result was extended by Roseblade to f.g. abelian-by-polycyclic, which was apparently very hard. | |
| Jun 19, 2020 at 13:30 | history | edited | Carl-Fredrik Nyberg Brodda | CC BY-SA 4.0 |
Changed nilp-by-nilp to ab-by-nilp to reflect comment by YCor.
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| Jun 19, 2020 at 13:29 | comment | added | Carl-Fredrik Nyberg Brodda | @YCor Thank you. The claim that f.g. metanilpotent groups are RF is stated exactly as such in the Baumslag article from 1963 on automorphism groups, so this seems an oversight from him. I'll edit to reflect this. | |
| Jun 19, 2020 at 13:22 | comment | added | YCor | Hall proved that f.g. abelian-by-nilpotent groups are residually finite. But it's false for f.g. nilpotent-by-nilpotent groups, and Hall himself constructed examples. | |
| S Jun 19, 2020 at 13:15 | history | answered | Carl-Fredrik Nyberg Brodda | CC BY-SA 4.0 | |
| S Jun 19, 2020 at 13:15 | history | made wiki | Post Made Community Wiki by Carl-Fredrik Nyberg Brodda |