A+ CATEGORY SCIENTIFIC UNIT

On nonmeasurable selectors of countable group actions

Volume 202 / 2009

Piotr Zakrzewski Fundamenta Mathematicae 202 (2009), 281-294 MSC: Primary 28A05, 28C10; Secondary 28D05. DOI: 10.4064/fm202-3-5

Abstract

Given a set $X$, a countable group $H$ acting on it and a $\sigma $-finite $H$-invariant measure $m$ on $X$, we study conditions which imply that each selector of $H$-orbits is nonmeasurable with respect to any $H$-invariant extension of $m$.

Authors

  • Piotr ZakrzewskiInstitute of Mathematics
    University of Warsaw
    Banacha 2
    02-097 Warszawa, Poland
    e-mail

Search for IMPAN publications

Query phrase too short. Type at least 4 characters.

Rewrite code from the image

Reload image

Reload image