Geometry of Müntz Spaces and Related Questions / Edition 1

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Overview

Starting point and motivation for this volume is the classical Muentz theorem which states that the space of all polynomials on the unit interval, whose exponents have too many gaps, is no longer dense in the space of all continuous functions. The resulting spaces of Muentz polynomials are largely unexplored as far as the Banach space geometry is concerned and deserve the attention that the authors arouse. They present the known theorems and prove new results concerning, for example, the isomorphic and isometric classification and the existence of bases in these spaces. Moreover they state many open problems. Although the viewpoint is that of the geometry of Banach spaces they only assume that the reader is familiar with basic functional analysis. In the first part of the book the Banach spaces notions are systematically introduced and are later on applied for Muentz spaces. They include the opening and inclination of subspaces, bases and bounded approximation properties and versions of universality.

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Editorial Reviews

From the Publisher

From the reviews:

"This book studies Müntz spaces associated with an increasing sequence of nonnegative exponents … . This is a well-organized, well-written, thoughtful, and thought-provoking book, discussing a number of tastefully selected topics. There is no doubt that research will continue, in the footsteps of the authors, on the fascinating problems related to these topics that remain open." (Tama's Erdélyi, Mathematical Reviews, Issue 2007 g)

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Product Details

  • ISBN-13: 9783540288008
  • Publisher: Springer Berlin Heidelberg
  • Publication date: 12/20/2005
  • Series: Lecture Notes in Mathematics Series , #1870
  • Edition description: 2005
  • Edition number: 1
  • Pages: 176
  • Product dimensions: 9.21 (w) x 6.14 (h) x 0.42 (d)

Table of Contents

Preface.- Part I Subspaces and Sequences in Banach Spaces: Disposition of Subspaces.- Sequences in Normed Spaces.- Isomorphism, Isometries and Embeddings.- Spaces of Universal Disposition.- Bounded Approximation Properties.- Part II On the Geometry of Müntz Sequences: Coefficient Estimates and the Müntz Theorem.- Classification and Elementary Properties of Müntz Sequences.- More on the Geometry of Müntz Sequences and Müntz Polynomials.- Operators of Finite Rank and Bases in Müntz Spaces.- Projection Types and the Isomorphism Problem for Müntz Spaces.- The Classes [M], A, P, and Pe.- Finite Dimensional Müntz Limiting Spaces in C.- References.- Index.

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