Dimension and Extensions - 1st Edition - ISBN: 9780444897404, 9780080887616

Dimension and Extensions, Volume 48

1st Edition

Authors: J.M. Aarts T. Nishiura
eBook ISBN: 9780080887616
Imprint: North Holland
Published Date: 28th January 1993
Page Count: 330
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Table of Contents

The Separable Case in Historical Perspective. Mappings into Spheres. Functions of Inductive Dimensional Type. Functions of Covering Dimensional Type. Functions of Basic Dimensional Type. Compactifications. Charts: The Absolute Borel Classes. Compactness Dimension Functions. Bibliography. Index.


Description

Two types of seemingly unrelated extension problems are discussed in this book. Their common focus is a long-standing problem of Johannes de Groot, the main conjecture of which was recently resolved. As is true of many important conjectures, a wide range of mathematical investigations had developed, which have been grouped into the two extension problems. The first concerns the extending of spaces, the second concerns extending the theory of dimension by replacing the empty space with other spaces.

The problem of de Groot concerned compactifications of spaces by means of an adjunction of a set of minimal dimension. This minimal dimension was called the compactness deficiency of a space. Early success in 1942 lead de Groot to invent a generalization of the dimension function, called the compactness degree of a space, with the hope that this function would internally characterize the compactness deficiency which is a topological invariant of a space that is externally defined by means of compact extensions of a space. From this, the two extension problems were spawned.

With the classical dimension theory as a model, the inductive, covering and basic aspects of the dimension functions are investigated in this volume, resulting in extensions of the sum, subspace and decomposition theorems and theorems about mappings into spheres. Presented are examples, counterexamples, open problems and solutions of the original and modified compactification problems.


Details

No. of pages:
330
Language:
English
Copyright:
© North Holland 1993
Published:
Imprint:
North Holland
eBook ISBN:
9780080887616

Reviews

@qu:...an excellent, complete survey... A systematic treatment, both of the properties of dimension-like functions as well as of the classes of extensions, a kind attitude to the reader and perfect organization are the main highlights of this fine book. @source:European Mathematical Society Newsletter @qu:This excellently written, exciting book is a portrait of a living and dynamic area ..... It should be required reading for anyone interested in dimension theory .... The exposition is masterful. @source:Bulletin of the American Mathematical Society


About the Authors

J.M. Aarts Author

Affiliations and Expertise

Delft University of Technology, The Netherlands

T. Nishiura Author

Affiliations and Expertise

Wayne State University, Detroit, MI, USA