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On the Classification Problem of Measurable Functions in Several Variables and on Matrix Distributions


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Abstract

We resume results of the first author on classification of measurable functions in several variables, with some minor corrections of purely technical nature. We give a partial solution of the characterization problem for so-called matrix distributions which are metric invariants of measurable functions introduced by the first author. Matrix distributions are considered as (S × S)-invariant, ergodic measures on the space of matrices; this fact connects our problem with Aldous’ and Hoover’s theorem. Bibliography: 14 titles.

About the authors

A. M. Vershik

St.Petersburg Department of the Steklov Mathematical Institute, St.Petersburg State University

Author for correspondence.
Email: vershik@pdmi.ras.ru
Russian Federation, St.Petersburg

U. Haböck

Competence Centre for IT–Security

Email: vershik@pdmi.ras.ru
Austria, Wien

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