Translation averages of dyadic weights are not always good weights
Author(s) -
Lesley A. Ward
Publication year - 2002
Publication title -
revista matemática iberoamericana
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.569
H-Index - 52
eISSN - 2235-0616
pISSN - 0213-2230
DOI - 10.4171/rmi/323
Subject(s) - bounded mean oscillation , translation (biology) , mathematics , bounded function , function (biology) , space (punctuation) , weighted arithmetic mean , pure mathematics , mathematical analysis , statistics , computer science , biochemistry , chemistry , evolutionary biology , biology , messenger rna , gene , operating system
The process of translation averaging is known to improve dyadic BMO to the space BMO of functions of bounded mean oscillation, in the sense that the translation average of a family of dyadic BMO functions is necessarily a BMO function. The present work investigates the effect of translation averaging in other dyadic settings. We show that translation averages of dyadic doubling measures need not be doubling measures, translation averages of dyadic Muckenhoupt weights need not be Muckenhoupt weights, and translation averages of dyadic reverse Holder weights need not be reverse Holder weights. All three results are proved using the same construction.
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