The Analysis of Linear Partial Differential Operators III

<P>From the reviews: </P><P>Volumes III and IV complete L. H��rmander's treatise on linear partial differential equations. They constitute the most complete and up-to-date account of this subject by the author who has dominated it and made the most significant contributions in the last decades.....It is a superb book which must be present in every mathematical library and an indispensable tool for all - young and old - interested in the theory of partial differential operators. L. Boutet de Monvel in Bulletin of the American Mathematical Society 1987.</P><P>This treatise is outstanding in every respect and must be counted among the great books in mathematics. It is certainly no easy reading (...) but a careful study is extremely rewarding for its wealth of ideas and techniques and the beauty of presentation. J. Br��ning in Zentralblatt MATH 1987.</P>