With the groundwork laid in the first volume (EMS 15) of the Commutative Harmonic Analysis subseries of the Encyclopaedia, the present volume takes up four advanced topics in the subject: Littlewood-Paley theory for singular integrals, exceptional sets, multiple Fourier series and multiple Fourier integrals.

Contains two essays: the first examines optimal facility location, according to a variety of economic criteria; the second develops a theory of international trade in which a region is regarded as a system of cities.

This book is an elementary introduction to non-classical spectral theory. Mter the basic definitions and a reduction to the study of the functional model the discussion will be centered around the simplest variant of such a model which, formally speaking, comprises only the class of contraction operators with a one dimensional rank of non-unitarity (rank(I - T*T) = rank(I - TT*) = 1). The main emphasis is on the technical side of the subject, the book being mostly devoted to a development of the analytical machinery of spectral theory rather than to this discipline itself. The functional model of Sz. -Nagy and Foia re duces the study of general operators to an investigation of the . compression T=PSIK of the shift operator S, Sf = zf, onto coinvariant subspaces (i. e. subspaces in variant with respect to the adjoint shift S*). In the main body of the book (the "Lectures" in the proper meaning of the word) this operator acts on the Hardy space H2 and is itself a part of the operator of multiplication by the independent variable in the space L2 (in the case at hand L2 means L2(lf), If being the unit circle), this operator again being fundamental for classical spectral theory."

With the groundwork laid in the first volume (EMS 15) of the Commutative Harmonic Analysis subseries of the Encyclopaedia, the present volume takes up four advanced topics in the subject: Littlewood-Paley theory for singular integrals, exceptional sets, multiple Fourier series and multiple Fourier integrals.

What would the Bible have been to ancient scholars without those geometrical forms and the "holy" numbers? A non-inspired series of texts!"

"Hans Peeters has done it again. His stellar "Field Guide to Owls of California and the West" is a fitting companion to his recent, acclaimed "Raptors of California." "Owls" is not only an excellent field guide, but also an amazing primer on owl biology and behavior. It sets a new standard and, what's more, is both a visual treat and a captivating read."--Clay Sutton, coauthor of "How to Spot an Owl" and other books
"An enjoyable and wonderfully illustrated companion to "Raptors of California," Treating the relatively familiar Great Horned Owl and obliging Burrowing Owl with the same skill as those ghostly forest species that are rarely more than disembodied voices for most of us, this book provides keen insights on the natural history of our most mysterious group of birds and sheds light on the complex conservation issues that face many owl species."--Kimball L. Garrett, Ornithology Collections Manager, Natural History Museum of Los Angeles County
"This is the owl book I've been waiting for. Peeters has delivered an exquisitely illustrated, thoroughly researched, and engagingly written guide that will be as valuable to young students as it will be to seasoned biologists."--Allen Fish, Director, Golden Gate Raptor Observatory

Contains two essays: the first examines optimal facility location, according to a variety of economic criteria; the second develops a theory of international trade in which a region is regarded as a system of cities.