Nil Bohr-Sets and Almost Automorphy of Higher Order

Nil Bohr-Sets and Almost Automorphy of Higher Order
Author :
Publisher : American Mathematical Soc.
Total Pages : 98
Release :
ISBN-10 : 9781470418724
ISBN-13 : 147041872X
Rating : 4/5 (24 Downloads)

Book Synopsis Nil Bohr-Sets and Almost Automorphy of Higher Order by : Wen Huang

Download or read book Nil Bohr-Sets and Almost Automorphy of Higher Order written by Wen Huang and published by American Mathematical Soc.. This book was released on 2016-04-26 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two closely related topics, higher order Bohr sets and higher order almost automorphy, are investigated in this paper. Both of them are related to nilsystems. In the first part, the problem which can be viewed as the higher order version of an old question concerning Bohr sets is studied: for any d∈N does the collection of {n∈Z:S∩(S−n)∩…∩(S−dn)≠∅} with S syndetic coincide with that of Nild Bohr0 -sets? In the second part, the notion of d -step almost automorphic systems with d∈N∪{∞} is introduced and investigated, which is the generalization of the classical almost automorphic ones.


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