A note on the support of right invariant measures

A regular measure μ on a locally compact topological semigroup is called right invariant if μ(Kx)=μ(K) for every compact K and x in its support. It is shown that this condition implies a property reminiscent of the right cancellation law. This is used to generalize a theorem of A. Mukherjea and the...

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Main Author: N. A. Tserpes
Format: Article
Language:English
Published: Wiley 1992-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S016117129200053X
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author N. A. Tserpes
author_facet N. A. Tserpes
author_sort N. A. Tserpes
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description A regular measure μ on a locally compact topological semigroup is called right invariant if μ(Kx)=μ(K) for every compact K and x in its support. It is shown that this condition implies a property reminiscent of the right cancellation law. This is used to generalize a theorem of A. Mukherjea and the author (with a new proof) to the effect that the support of an r*-invariant measure is a left group iff the measure is right invariant on its support.
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spelling doaj-art-85dccda4e8704333bd90924c5916c7f12025-02-03T01:11:23ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04251992-01-0115240540810.1155/S016117129200053XA note on the support of right invariant measuresN. A. Tserpes0Department of Mathematics, University of Patra, Patra, GreeceA regular measure μ on a locally compact topological semigroup is called right invariant if μ(Kx)=μ(K) for every compact K and x in its support. It is shown that this condition implies a property reminiscent of the right cancellation law. This is used to generalize a theorem of A. Mukherjea and the author (with a new proof) to the effect that the support of an r*-invariant measure is a left group iff the measure is right invariant on its support.http://dx.doi.org/10.1155/S016117129200053Xtopological semigroupleft groupright invariant (Borel) measurer*-invariant measuresupport of a Borel measurelocally compact semigroup.
spellingShingle N. A. Tserpes
A note on the support of right invariant measures
International Journal of Mathematics and Mathematical Sciences
topological semigroup
left group
right invariant (Borel) measure
r*-invariant measure
support of a Borel measure
locally compact semigroup.
title A note on the support of right invariant measures
title_full A note on the support of right invariant measures
title_fullStr A note on the support of right invariant measures
title_full_unstemmed A note on the support of right invariant measures
title_short A note on the support of right invariant measures
title_sort note on the support of right invariant measures
topic topological semigroup
left group
right invariant (Borel) measure
r*-invariant measure
support of a Borel measure
locally compact semigroup.
url http://dx.doi.org/10.1155/S016117129200053X
work_keys_str_mv AT natserpes anoteonthesupportofrightinvariantmeasures
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