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Zhurnal Matematicheskoi Fiziki, Analiza, Geometrii [Journal of Mathematical Physics, Analysis, Geometry], 2012, Volume 8, Number 3, Pages 260–279
(Mi jmag538)
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This article is cited in 2 scientific papers (total in 2 papers)
Good measures on locally compact Cantor sets
O. M. Karpel Mathematics Division, B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkiv 61103, Ukraine
Abstract:
We study the set $M(X)$ of full non-atomic Borel measures $\mu$ on a non-compact locally compact Cantor set $X$. The set $\mathfrak{M}_\mu = \{x \in X\colon \text{for any compact open set}\ U \ni x \text{ we have}\ \mu(U) = \infty \}$ is called defective. $\mu$ is non-defective if $\mu(\mathfrak{M}_\mu) = 0$. The set $M^0(X) \subset M(X)$ consists of probability and infinite non-defective measures. We classify the measures from $M^0(X)$ with respect to a homeomorphism. The notions of goodness and the compact open values set $S(\mu)$ are defined. A criterion when two good measures are homeomorphic is given. For a group-like set $D$ and a locally compact zero-dimensional metric space $A$ we find a good non-defective measure $\mu$ on $X$ such that $S(\mu) = D$ and $\mathfrak{M}_\mu$ is homeomorphic to $A$. We give a criterion when a good measure on $X$ can be extended to a good measure on the compactification of $X$.
Key words and phrases:
Borel measures, locally compact Cantor set, compactification, invariant measures.
Received: 28.03.2012
Citation:
O. M. Karpel, “Good measures on locally compact Cantor sets”, Zh. Mat. Fiz. Anal. Geom., 8:3 (2012), 260–279
Linking options:
https://www.mathnet.ru/eng/jmag538 https://www.mathnet.ru/eng/jmag/v8/i3/p260
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