Talk:Alexander S. Kechris
Latest comment: 1 year ago by Community Tech bot in topic A Commons file used on this page or its Wikidata item has been nominated for deletion
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WikiProject class rating
editThis 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)
- 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)
- No, you did not: this diff. Boris Tsirelson (talk) 20:49, 21 April 2017 (UTC)
Philosopher?
editMathematician - yes, but philosopher? I do not see sources supporting this claim.--93.86.33.191 (talk) 08:33, 23 April 2017 (UTC)
A Commons file used on this page or its Wikidata item has been nominated for deletion
editThe following Wikimedia Commons file used on this page or its Wikidata item has been nominated for deletion:
Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 05:57, 18 February 2023 (UTC)