图书介绍：Mathematics is playing an ever more important role in the physical and biological sciences， provoking a blurring of boundaries between scientific disciplines and a resurgence of interest'in the modern as well as the classical techniques of applied mathematics. This renewal of interest， both in research and teaching， has led to the establishment of the series： Texts in AppliedMathe- rustics （TAM）. The development of new courses is a natural consequence of a high level of excitement on the researc