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Arc components in locally compact groups are Borel sets

Published online by Cambridge University Press:  17 April 2009

Karl Heinrich Hofmann
Affiliation:
Fachbereich Mathematik, Technische Universität Darmstadt, Schlossgartenstr. 7, D-64289 Darmstadt, Germany e-mail: hofmann@mathematik.tu-darmstadt.de
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Abstract

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Are the arc components in a locally compact group Borel subsets? An affirmative answer is provide for locally compact groups satisfying the First Axiom of Count-ability. For general locally compact groups the question is reduced to compact connected Abelian groups. In certain models of set theory the answer is negative.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2002

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