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Abstract Band Method via Factorization, Positive and Band Extensions of Multivariable Almost Periodic Matrix Functions, and Spectral Estimation
L. RodmanIlya M. SpitkovskiĭHugo Jan Woerdeman
出版American Mathematical Soc., 2002
主題Mathematics / Algebra / GeneralMathematics / AppliedMathematics / CalculusMathematics / Probability & Statistics / General
ISBN08218299639780821829967
URLhttp://books.google.com.hk/books?id=TNLUCQAAQBAJ&hl=&source=gbs_api
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註釋In this work, versions of an abstract scheme are developed, which are designed to provide a framework for solving a variety of extension problems. The abstract scheme is commonly known as the band method. The main feature of the new versions is that they express directly the conditions for existence of positive band extensions in terms of abstract factorizations (with certain additional properties). The results prove, amongst other things, that the band extension is continuous in an appropriate sense.