Timeline for Finding all automorphisms of $\mathbb{C}(x,y)$
Current License: CC BY-SA 4.0
20 events
| when toggle format | what | by | license | comment | |
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| Nov 24, 2019 at 12:06 | history | edited | user237522 | CC BY-SA 4.0 |
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| Nov 24, 2019 at 12:05 | comment | added | user237522 | @YCor, oh, you are right, I apologize. I will ask the edit 2 in a separate question soon. | |
| Nov 24, 2019 at 0:26 | comment | added | YCor | You already accepted an answer; please ask a new question separately instead of editing your question. | |
| Nov 23, 2019 at 20:03 | history | edited | user237522 | CC BY-SA 4.0 |
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| Jan 29, 2019 at 23:28 | vote | accept | user237522 | ||
| Jan 29, 2019 at 23:06 | answer | added | Jérémy Blanc | timeline score: 12 | |
| Oct 31, 2016 at 3:16 | comment | added | YCor | I'll be more precise: knowing generators is some piece of information on a group; which can be useless (e.g. if I give you the whole group as set of generators) or not and can be described in many non-equivalent ways. Next you can have a presentation, which can be more or less useful (e.g. an amalgam has interesting special features, which doesn't mean it's always fully understood). But in Cremona "describe the group" can have a totally different meaning. E.g., it can consist in describing the set of pairs of rational functions that indeed define a element of the Cremona group... | |
| Oct 31, 2016 at 2:15 | comment | added | user237522 | Great! That list of articles will help me a lot, and it will help others also. | |
| Oct 31, 2016 at 2:10 | comment | added | YCor | Yes there's a big recent literature including modern proofs. You can browse in webusers.imj-prg.fr/~julie.deserti/cremona.html | |
| Oct 31, 2016 at 1:59 | history | edited | user237522 | CC BY-SA 3.0 |
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| Oct 31, 2016 at 1:42 | comment | added | user237522 | In contrast to what happens in the group of $\mathbb{C}$-algebra automorphisms of $\mathbb{C}[x,y]$, where we know of a generating set (affines and de Jonquieres), and the group is "known"= free amalgamated product. | |
| Oct 31, 2016 at 0:30 | review | Close votes | |||
| Oct 31, 2016 at 7:18 | |||||
| Oct 31, 2016 at 0:16 | comment | added | YCor | Knowing a generating subset for a group does not mean that the group is "known". | |
| Oct 31, 2016 at 0:12 | history | edited | YCor |
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| Oct 30, 2016 at 22:24 | comment | added | Uri Bader | From the home page of Serge Cantat: perso.univ-rennes1.fr/serge.cantat/Articles/… | |
| Oct 30, 2016 at 22:22 | comment | added | user237522 | You can write your first comment as an answer, if you wish, Thanks again. | |
| Oct 30, 2016 at 22:15 | comment | added | Felipe Voloch | Sorry, no, I'm not a specialist. | |
| Oct 30, 2016 at 22:07 | comment | added | user237522 | Thank you very much! Please do you know of some new results concerning the Cremona group that are not mentioned in en.wikipedia.org/wiki/Cremona_group | |
| Oct 30, 2016 at 22:00 | comment | added | Felipe Voloch | That's the Cremona group. | |
| Oct 30, 2016 at 21:57 | history | asked | user237522 | CC BY-SA 3.0 |