Timeline for The map $k \mapsto \mathbf{PGL}_2(k)$
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Oct 11, 2022 at 17:44 | comment | added | THC | Doesn't the case $n = 2$ (for $\mathbf{PGL}_2(D)$) directly follows from the case of $\mathbf{PSL}_2(D)$ plus the fact that the latter is generically a characteristic subgroup of $\mathbf{PGL}_2(D)$ ? (An isomorphism between the $\mathbf{PGL}_2$s induces an isomorphism between the $\mathbf{PSL}_2$s.) | |
| Oct 11, 2022 at 17:30 | history | edited | Denis T | CC BY-SA 4.0 |
edited body
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| Oct 11, 2022 at 17:23 | history | edited | Denis T | CC BY-SA 4.0 |
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| Oct 11, 2022 at 17:06 | history | edited | Denis T | CC BY-SA 4.0 |
expanded and fixed factual errors
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| Oct 11, 2022 at 14:52 | comment | added | Denis T | @THC ...Well, I was a bit too eager to include $n = 2$ case without some nuances; I'll edit the answer to promote it from containing almost true statements to being true. | |
| Oct 11, 2022 at 14:05 | comment | added | THC | In O'Meara's paper, the author seems to be assuming that $n \geq 5$ ? Are the cases $n = 2, 3, 4$ also covered (somewhere) ? | |
| Oct 11, 2022 at 13:14 | history | edited | Denis T | CC BY-SA 4.0 |
added 39 characters in body
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| Oct 11, 2022 at 12:32 | vote | accept | THC | ||
| Oct 11, 2022 at 12:11 | history | edited | Denis T | CC BY-SA 4.0 |
added 174 characters in body
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| Oct 11, 2022 at 12:01 | history | answered | Denis T | CC BY-SA 4.0 |