Talk:Alexander S. Kechris

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Biography / Science and Academia (Rated Stub-class)
WikiProject icon This article is within the scope of WikiProject Biography, a collaborative effort to create, develop and organize Wikipedia's articles about people. All interested editors are invited to join the project and contribute to the discussion. For instructions on how to use this banner, please refer to the documentation.
Stub-Class article Stub  This article has been rated as Stub-Class on the project's quality scale.
Taskforce icon
This article is supported by the science and academia work group.
 
WikiProject Philosophy (Rated Stub-class, Low-importance)
WikiProject icon This article is within the scope of WikiProject Philosophy, a collaborative effort to improve the coverage of content related to philosophy on Wikipedia. If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the general discussion about philosophy content on Wikipedia.
Stub-Class article Stub  This article has been rated as Stub-Class on the project's quality scale.
 Low  This article has been rated as Low-importance on the project's importance scale.
 

WikiProject class rating[edit]

This article was automatically assessed because at least one WikiProject had rated the article as stub, and the rating on other projects was brought up to Stub class. BetacommandBot 03:44, 10 November 2007 (UTC)

Statement origin[edit]

"He has made major contributions to the theory of Borel equivalence relations and the theory of automorphism groups of uncountable structures"

What supports this statement?--93.86.33.191 (talk) 20:15, 21 April 2017 (UTC)

Isn't the Karp price convincing enough? Boris Tsirelson (talk) 20:22, 21 April 2017 (UTC)
 
Well, Harrington–Kechris–Louveau (the empty gap between R and E0) is pretty much the beginning of the study of Borel equivalence relations as a separate topic, and Classical Descriptive Set Theory was probably the main book reference prior to Gao's Invariant Descriptive Set Theory. I admit I don't know where to find a specific cite for the claim. The automorphism-group stuff I don't remember much about; did I write that? --Trovatore (talk) 20:25, 21 April 2017 (UTC)
No, you did not: this diff. Boris Tsirelson (talk) 20:49, 21 April 2017 (UTC)
Thanks. Hard to remember sometimes, and I was too lazy to check the history. --Trovatore (talk) 21:11, 21 April 2017 (UTC)
@ Boris Tsirelson. Thank you. Fair enough for the first part of the statement. How about "and the theory of automorphism groups of uncountable structures", the second part?--93.86.33.191 (talk) 05:49, 22 April 2017 (UTC)
I am not an expert here; Trovatore should know more. Indeed, now I wonder, why "uncountable"? It seems, Kechris investigated countable... About uncountable, I see arXiv:1111.4995 by Dana Bartosova (2011), generalizing results of Kechris et al from countable to uncountable. Hmmm. Boris Tsirelson (talk) 07:12, 22 April 2017 (UTC)
We can leave the statement unchanged. Maybe, the person who entered this statement might be back and provide the answer.--93.86.33.191 (talk) 08:33, 23 April 2017 (UTC)

Philosopher?[edit]

Mathematician - yes, but philosopher? I do not see sources supporting this claim.--93.86.33.191 (talk) 08:33, 23 April 2017 (UTC)