Very badly approximable matrix functions
نویسندگان
چکیده
منابع مشابه
Very Badly Approximable Matrix Functions
We study in this paper very badly approximable matrix functions on the unit circle T, i.e., matrix functions Φ such that the zero function is a superoptimal approximation of Φ. The purpose of this paper is to obtain a characterization of the continuous very badly approximable functions. Our characterization is more geometric than algebraic characterizations earlier obtained in [PY1] and [AP]. I...
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ژورنال
عنوان ژورنال: Selecta Mathematica
سال: 2005
ISSN: 1022-1824,1420-9020
DOI: 10.1007/s00029-005-0001-1