Groups of line and circle diffeomorphisms. Criteria for almost nilpotency and structure theorems
L. A. Beklaryanab
a Peoples Friendship University of Russia, Moscow
b Central Economics and Mathematics Institute Russian Academy of Sciences, Moscow
Almost nilpotency criteria and structure theorems are presented for the class of finitely generated groups of line and circle diffeomorphisms with mutually transversal elements. Key ingredients in the proof of the structure theorems are the existence/absence of an invariant measure, the (previously established) criterion for the existence of an invariant measure and restatements of this criterion in terms of various (topological, algebraic, combinatorial) characteristics of the group. The question of whether certain features of these characteristics or the existence of an invariant measure are typical for groups of line and circle diffeomorphisms is discussed.
Bibliography: 34 titles.
groups of diffeomorphisms, almost nilpotency criterion, invariant measure.
|Russian Foundation for Basic Research
|This research was carried out with the support of the Russian Foundation for Basic Research (grant no. 16-01-00110-a).
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Sbornik: Mathematics, 2016, 207:8, 1079–1099
MSC: 37E05, 37E10, 57M60
Received: 05.09.2015 and 18.01.2016
L. A. Beklaryan, “Groups of line and circle diffeomorphisms. Criteria for almost nilpotency and structure theorems”, Mat. Sb., 207:8 (2016), 47–72; Sb. Math., 207:8 (2016), 1079–1099
Citation in format AMSBIB
\paper Groups of line and circle diffeomorphisms. Criteria for almost nilpotency and structure theorems
\jour Mat. Sb.
\jour Sb. Math.
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