Advances in Pure Mathematics

Volume 4, Issue 5 (May 2014)

ISSN Print: 2160-0368   ISSN Online: 2160-0384

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A Solution of a Problem of I. P. Natanson Concerning the Decomposition of an Interval into Disjoint Perfect Sets

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DOI: 10.4236/apm.2014.45024    4,674 Downloads   5,929 Views  
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ABSTRACT

In a previous paper published in this journal, it was demonstrated that any bounded, closed interval of the real line can, except for a set of Lebesgue measure 0, be expressed as a union of c pairwise disjoint perfect sets, where c is the cardinality of the continuum. It turns out that the methodology presented there cannot be used to show that such an interval is actually decomposable into c nonoverlapping perfect sets without the exception of a set of Lebesgue measure 0. We shall show, utilizing a Hilbert-type space-filling curve, that such a decomposition is possible. Furthermore, we prove that, in fact, any interval, bounded or not, can be so expressed.

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Cohen Jr., E. (2014) A Solution of a Problem of I. P. Natanson Concerning the Decomposition of an Interval into Disjoint Perfect Sets. Advances in Pure Mathematics, 4, 189-193. doi: 10.4236/apm.2014.45024.

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