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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

Zap. Nauchn. Sem. POMI, 2001 Volume 283, Pages 50–62 (Mi znsl1522)

This article is cited in 2 papers

Relation between different definitions of the entropy of decreasing sequences of partitions; scaling

A. Gorbulsky

St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences

Abstract: The present paper is devoted to the study of scaling sequences, which occur in the definition of entropy type invariants. The necessity to distinguish nonstandard sequences with zero entropy leads to a generalization of the entropy of decreasing sequences of measurable partitions.The more refined entropy type invariant – “scaling” entropy is described in [4]. It is based on the notion of $\varepsilon$- entropy of a metric space with measure. In the present work it is shown, that the “scaling” entropy from [4] is a generalization of the entropy of decreasing sequences if taking $2^n$ as the scaling sequence. The scaling entropy of the partition into pasts of one important class of endomorphisms, namely $(T,T^{-1})$-endomorphisms, is calculated.

UDC: 517.98

Received: 25.09.2001


 English version:
Journal of Mathematical Sciences (New York), 2004, 121:3, 2319–2325

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