I have tried in this book to describe those aspects of pseudodifferential and Fourier integral operator theory whose usefulness seems proven and which, from the viewpoint of organization and "presentability," appear to have stabilized. Since, in my opinion, the main justification for studying these operators is pragmatic, much attention has been paid to explaining their handling and to giving examples of their use. Thus the theoretical chapters usually begin with a section in which the construction of special solutions of linear partial differential equations is carried out, constructions from which the subsequent theory has emerged and which continue to motivate it: parametrices of elliptic equations in Chapter I (introducing pseudodifferen tial operators of type 1, 0, which here are called standard), of hypoelliptic equations in Chapter IV (devoted to pseudodifferential operators of type p, 8), fundamental solutions of strongly hyperbolic Cauchy problems in Chap ter VI (which introduces, from a "naive" standpoint, Fourier integral operators), and of certain nonhyperbolic forward Cauchy problems in Chapter X (Fourier integral operators with complex phase). Several chapters-II, III, IX, XI, and XII-are devoted entirely to applications. Chapter II provides all the facts about pseudodifferential operators needed in the proof of the Atiyah-Singer index theorem, then goes on to present part of the results of A. Calderon on uniqueness in the Cauchy problem, and ends with a new proof (due to J. J. Kohn) of the celebrated sum-of-squares theorem of L. Hormander, a proof that beautifully demon strates the advantages of using pseudodifferential operators.
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Book Description Springer, 1980. Hardcover. Book Condition: Good. Item may show signs of shelf wear. Pages may include limited notes and highlighting. Includes supplemental or companion materials if applicable. Access codes may or may not work. Connecting readers since 1972. Customer service is our top priority. Bookseller Inventory # mon0000527921
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Book Description Plenum Press, 1980. hardcover. Book Condition: Good. Dust Jacket Condition: Good. Two volume set in scarce dust jackets; dust jackets lightly rubbed/lightly soiled/lightly age-toned, minor chipping and tearing to corners and spine ends, jackets now protected in brodart; covers faintly rubbed, front board of volume two very lightly soiled, corners very lightly rubbed/bumped, spine ends lightly rubbed/bumped; edges faintly soiled; endpapers very lightly age-toned, front pastedowns have markings in black ink; bindings tight; dust jackets, covers, edges, and interiors intact and clean except as noted. Due to the size/weight of this set, additional shipping charges may apply on International or Expedited orders. Bookseller Inventory # 612162