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Zusatztext The book is written in a very informative style providing proofs where they support the understanding and referring to the literature for technical details and further study; the reader will very soon notice and appreciate the authors' thorough way of referencing. Klappentext Borel's methods of summability--transformations of one series of numbers to another--are fundamental to a whole class of sequences to function methods. Conceived at the beginning of the 20th century, they have been increasingly applied to exciting new problems in theoretical physics. Comprehensive and rigorous, this book offers an outstanding overview of the subject. It will be sought after by students and researchers in number theory. Zusammenfassung Summability methods are transformations that map sequences (or functions) to sequences (or functions). A prime requirement for a "good" summability method is that it preserves convergence. Unless it is the identity transformation, it will do more: it will transform some divergent sequences to convergent sequences.An important type of theorem is called a Tauberian theorem. Here, we know that a sequence is summable. The sequence satisfies a further property that implies convergence.Borel's methods are fundamental to a whole class of sequences to function methods. The transformation gives a function that is usually analytic in a large part of the complex plane, leading to a method for analytic continuation.These methods, dated from the beginning of the 20th century, have recently found applications in some problems in theoretical physics. Inhaltsverzeichnis Introduction 1: Historical Overview 2: Summability Methods in General 3: Borel's Methods of Summability 4: Relations with the family of circle methods 5: Generalisations 6: Albelian Theorems 7: Tauberian Theorems - I 8: Tauberian Theorems - II 9: Relationships with other methods 10: Applications of Borel's Methods References ...
