[Settfa] Tuesday 21/12, Ondrej Kurka

[kubis at math.cas.cz]

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 Tuesday 21st December, 10:00am 
 
  Place: IM in konírna 

 
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 Speaker:Ondrej Kurka, IM CAS
 Title: Orbit pseudometrics and a universality property of the Gromov-Hausdorff distance

 Abstract  

 The present talk will be a continuation of the talk "On a generalization of orbit equivalence relations" from 2018,
 
all important notions will be recalled nevertheless. We will show that the Gromov-Hausdorff distance of Polish metric
 
spaces is universal for a certain class of orbit pseudometrics. Also, we will establish a continuous version of the result

of Clemens, Gao and Kechris stating that the isometry relation is bireducible with a universal orbit equivalence relation.


 For more information see the seminar web page at 
 https://calendar.math.cas.cz/set-theory-and-analysis-actual .