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SPARSE SETS ON THE PLANE AND DENSITY POINTS DEFINED BY FAMILIES OF SEQUENCES

Published online by Cambridge University Press:  06 March 2012

GRAŻYNA HORBACZEWSKA*
Affiliation:
Department of Mathematics and Computer Science, University of Łódz, Banacha 22, 90 238 Łódz, Poland (email: [email protected])
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Abstract

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A condition equivalent to sparseness of a set on the plane is formulated and used as a motivation for a new concept of density point on the plane. This is investigated and compared with known previous versions.

Type
Research Article
Copyright
Copyright © Australian Mathematical Publishing Association Inc. 2012

References

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