Purpose The major topic in this book is spectral synthesis. The purpose
of the book can be described as follows: A. To trace the development of
spectral synthesis from its origins in the study of Tauberian theorems;
B. To draw attention to other mathematical areas which are related to
spectral syn- thesis; C. To give a thorough (although not encyclopedic)
treatment of spectral synthesis for 1 the case of L ( G); D. To
introduce the "integration" and "structure" problems that have emerged
because of the study of spectral synthesis. A and B. The first two
points are discussed in Chapters 1 and 2, and are the major reasons that
such a large bibliography has evolved. By the end of Chapter 2, the
significant relationship between Tauberian theorems and spectral
synthesis is not only firmly established, but the extent to which this
relationship is still undetermined is emphasized by the open
"C-set-S-set" problem. Also, Chapters 1 and 2 view spectral synthesis
amidst other problems and influences. C. By contrast, Chapter 3 is (or
at least is meant to be) more business-like, and synthesis is
essentially the only topic under discussion.