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)Reply

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)Reply

Isn't the Karp price convincing enough? Boris Tsirelson (talk) 20:22, 21 April 2017 (UTC)Reply
 
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)Reply
No, you did not: this diff. Boris Tsirelson (talk) 20:49, 21 April 2017 (UTC)Reply
Thanks. Hard to remember sometimes, and I was too lazy to check the history. --Trovatore (talk) 21:11, 21 April 2017 (UTC)Reply
@ 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)Reply
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)Reply
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)Reply

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)Reply

A Commons file used on this page or its Wikidata item has been nominated for deletion

edit

The 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)Reply