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Gauge theory, symplectic geometry and symplectic topology are important areas at the crossroads of several mathematical disciplines. The present book, with expertly written surveys of recent developments in these areas, includes some of the first expository material of Seiberg-Witten theory, which has revolutionised the subjects since its introduction in late 1994.
Topics covered include: introductions to Seiberg-Witten theory, to applications of the S-W theory to four-dimensional manifold topology, and to the classification of symplectic manifolds; an introduction to the theory of...

Behind the mystery of economic growth stands another mystery: why do some places fare better than others? Casual evidence shows that sizable differences exist at very different spatial scales (countries, regions and cities). This book aims to discuss the main economic reasons for the existence of peaks and troughs in the spatial distribution of wealth and people, with a special emphasis on the role of large cities and regional agglomerations in the process of economic development.