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Hardcover ISBN:  9780821829431 
Product Code:  MMONO/216 
List Price:  $165.00 
MAA Member Price:  $148.50 
AMS Member Price:  $132.00 
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Product Code:  MMONO/216.E 
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MAA Member Price:  $139.50 
AMS Member Price:  $124.00 
Hardcover ISBN:  9780821829431 
eBook ISBN:  9781470446413 
Product Code:  MMONO/216.B 
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Book DetailsTranslations of Mathematical MonographsVolume: 216; 2002; 183 ppMSC: Primary 30
In this book, G. V. Badalyan addresses the fundamental problems of the theory of infinitelydifferentiable functions using the theory of functions of quasianalytic classes.
A certain class of functions \(C\) on an interval is called quasianalytic if any function in \(C\) is uniquely determined by the values of its derivatives at any point. The obvious question, then, is how to reconstruct such a function from the sequence of values of its derivatives at a certain point. In order to answer that question, Badalyan combines a study of expanding functions in generalized factorial series with a study of quasipower series.
The theory of quasipower series and its application to the reconstruction problem are explained in detail in this research monograph. Along the way other, related problems are solved, such as Borel's hypothesis that no quasianalytic function can have all positive derivatives at a point.
Originally published in Russian, this English translation contains additional material that treats the problems of classification of infinitelydifferentiable functions, conditions for absolute convergence of quasipower series in terms of the functions that generate them, and the possibility of representing analytic functions by quasipower series in noncircular domains.
While the treatment is technical, the theory is developed chapter by chapter in detail, and the first chapter is of an introductory nature. The quasipower series technique explained here provides the means to extend the previously known results and elucidates their nature in the most relevant manner. This method also allows for thorough investigation of numerous problems of the theory of functions of quasianalytic classes by graduate students and research mathematicians.
ReadershipResearch mathematicians and advanced graduate students.

Table of Contents

Chapters

Quasianalytic classes of functions

Generalizations of the Taylor formula. Quasipower series

Functions of Carleman’s classes: Expansion in quasipower series

Criteria for the possibility of expanding functions in quasipower and factorial series

Generalized completely monotone functions and the condition for absolute convergence of a quasipower series (in the basic interval)

On the use of quasipower series for representation of analytic functions in noncircular domains

Some applications of quasipower series to the theory of functions of quasianalytic classes


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In this book, G. V. Badalyan addresses the fundamental problems of the theory of infinitelydifferentiable functions using the theory of functions of quasianalytic classes.
A certain class of functions \(C\) on an interval is called quasianalytic if any function in \(C\) is uniquely determined by the values of its derivatives at any point. The obvious question, then, is how to reconstruct such a function from the sequence of values of its derivatives at a certain point. In order to answer that question, Badalyan combines a study of expanding functions in generalized factorial series with a study of quasipower series.
The theory of quasipower series and its application to the reconstruction problem are explained in detail in this research monograph. Along the way other, related problems are solved, such as Borel's hypothesis that no quasianalytic function can have all positive derivatives at a point.
Originally published in Russian, this English translation contains additional material that treats the problems of classification of infinitelydifferentiable functions, conditions for absolute convergence of quasipower series in terms of the functions that generate them, and the possibility of representing analytic functions by quasipower series in noncircular domains.
While the treatment is technical, the theory is developed chapter by chapter in detail, and the first chapter is of an introductory nature. The quasipower series technique explained here provides the means to extend the previously known results and elucidates their nature in the most relevant manner. This method also allows for thorough investigation of numerous problems of the theory of functions of quasianalytic classes by graduate students and research mathematicians.
Research mathematicians and advanced graduate students.

Chapters

Quasianalytic classes of functions

Generalizations of the Taylor formula. Quasipower series

Functions of Carleman’s classes: Expansion in quasipower series

Criteria for the possibility of expanding functions in quasipower and factorial series

Generalized completely monotone functions and the condition for absolute convergence of a quasipower series (in the basic interval)

On the use of quasipower series for representation of analytic functions in noncircular domains

Some applications of quasipower series to the theory of functions of quasianalytic classes