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Trans. Am. Math. Soc.
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Inclusion relations between power methods and matrix methods of limitation

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Abstract

A matrix method of limitation is a generalization of both ordinary Toeplitz methods and semicontinuous methods. A power method is a generalization of both Abel’s method and Borel’s exponential method. The main concern of this paper is to find necessary and sufficient conditions for the field of a given power method to be included in the field of a given matrix method. The problem is solved for a wide family of power methods which includes all Abel type methods, the logarithmic method, all Borel type methods and others (also nonregular power methods). Preliminary results, which serve as tools in the solution of the main problem, clarify some aspects of the nature of the field of a power method as an FK space. © 1977 American Mathematical Society.

Date

01 Jan 1977

Publication

Trans. Am. Math. Soc.

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