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Given a set X, a countable group H acting on it and a σ-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.
Piotr Zakrzewski. "On nonmeasurable selectors of countable group actions." Fundamenta Mathematicae 202.3 (2009): 281-294. <http://eudml.org/doc/283325>.
@article{PiotrZakrzewski2009, abstract = {Given a set X, a countable group H acting on it and a σ-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.}, author = {Piotr Zakrzewski}, journal = {Fundamenta Mathematicae}, keywords = {nonmeasurable set; group of transformations; invariant measure; measurable transformation; equidecomposable sets}, language = {eng}, number = {3}, pages = {281-294}, title = {On nonmeasurable selectors of countable group actions}, url = {http://eudml.org/doc/283325}, volume = {202}, year = {2009}, }
TY - JOUR AU - Piotr Zakrzewski TI - On nonmeasurable selectors of countable group actions JO - Fundamenta Mathematicae PY - 2009 VL - 202 IS - 3 SP - 281 EP - 294 AB - Given a set X, a countable group H acting on it and a σ-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. LA - eng KW - nonmeasurable set; group of transformations; invariant measure; measurable transformation; equidecomposable sets UR - http://eudml.org/doc/283325 ER -