Synopses & Reviews
The book generalises the classical theory of orthogonal polynomials to rational functions.
Review
"...emphasizes new developments in contemporary mathematical and computational sciences, and it is intended that books in it should serve to inform a new generation of research students and professionals alike." Mathematical Reviews"The text is written with great clarity and the order in which the material is presented is well designed...combined very successfully in this joint venture." Proceedings of the Edinburgh Mathematical Society"This is the first book to discuss the rational orthogonal functions in such a great detail...The well-written, cohesive presentation should be of great assistance to new and experienced researchers, both mathematicians and physicists, in the area of rational orthogonal functions." Siam Review"...an excellent book which is indispensable for anyone who wants to loosen the shackles of the fixed pole situation present in the ordinary theory on the real line and the unit circle. To top that, the price makes it possible for everyone working in the field to buy a personal copy." Mathematics of Computation
Synopsis
This book generalizes the classical theory of orthogonal polynomials on the complex unit circle or on the real line to orthogonal rational functions whose poles are among a prescribed set of complex numbers. This theory has many applications both in theoretical real and complex analysis, approximation theory, numerical analysis, system theory, and in electrical engineering.
Table of Contents
List of symbols; Introduction; 1. Preliminaries; 2. The fundamental spaces; 3. The kernel functions; 4. Recurrence and second kind functions; 5. Para-orthogonality and quadrature; 6. Interpolation; 7. Density of the rational functions; 8. Favard theorems; 9. Convergence; 10. Moment problems; 11. The boundary case; 12. Some applications; Conclusion; Bibliography; Index.