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Название: Hilbert Space, Boundary Value Problems, and Orthogonal Polynomials
Автор: Krall A.M.
Аннотация:
Many connections have been found between the theory of analytic functions of one or more complex variables and the study of commutative Banach algebras. While function theory has often been employed to answer algebraic questions such as the existence of idempotents in a Banach algebra, concepts arising from the study of Banach algebras including the maximal ideal space, the Silov boundary, and Gleason parts, have led to new questions and to new methods of proofs in function theory. This book is concerned with developing some of the principal applications of function theory in several complex variables to Banach algebras. The authors do not presuppose any knowledge of several complex variables on the part of the reader, and all relevant material is developed within the text. Furthermore, the book deals with problems of uniform approximation on compact subsets of the space of n complex variables. The third edition of this book contains new material on maximum modulus algebras and subharmonicity, the hull of a smooth curve, integral kernels, perturbations of the Stone-Weierstrass Theorem, boundaries of analytic varieties, polynomial hulls of sets over the circle, areas, and the topology of hulls. The authors have also included a new chapter containing commentaries on history and recent developments and an updated and expanded list of references.
Set orthonormal713 Set, compact26 Set, complete orthogonal248 Set, complete orthonormal25 Shaw, Hinton and Shaw’s extension of Weyl’s theory to systems107 Shaw, Hinton and Shaw’s extension with two singular points137 Shaw, Kenxiii Singular boundary conditions79117 Singular point74 Singular Sturm — Liouville boundary value problemsxiii Sixth order differential equations287 Sixth order differential operator282 Sobolev boundary value problems, regular Sobolev boundary value problems for linear Hamiltonian systems307 Sobolev boundary value problems, singular second order330 Sobolev inner product303305 Sobolev space295298302305308327336340341 Sobolev space, Laguerre-type polynomials, in a339 Sobolev space, Legendre-type polynomials, in a339 Solutions, square inegrable115 Space, - - s343 Space, complex linear1 Space, Hilbertxiii6343 Space, inner product910 Space, isometric Hilbert15 Space, Krein259 Space, linear1 Space, Pontrjagin240 Space, Sobolev295298302305308327336340341 Spectral expansion168 Spectral resolution69335—337 Spectral resolution for linear Hamiltonian systems with one singular point167 Spectral resolution for linear Hamiltonian systems with two singular points189 Spectral resolution of a bounded self-adjoint operator33 Spectral resolution of an unbounded self-adjoint operator46 Spectral resolution of bounded normal and unitary operators37 Spectral resolution of the Jacobi operator334 Spectral resolution of the Legendre operator334 Spectrum333 Spectrum of A, 18 Spectrum, continuous spectrum, 25 Spectrum, point spectrum, 25 Spectrum, residual spectrum 2527 Square integrable solutions115 Stieltjes measure70 Stirling number of the second kind342 Stirling numbers342 subspace2 Subspace expansions185 Support compact207 Support of a function207 symmetric45 Symmetry factor226232 System, Dirac5154 System, linear Hamiltonianxiii System, regular linear Hamiltonian51 System, S-Hermitian5156 T(A)33 T, class of all piecewise continuous functions on [m,M]32 Tchebycheff operator264 Tchebycheff polynomials223261 Tchebycheff problem of the first kind150 Tchebycheff problem of the second kind151 Tchebycheff test function of rapid decay, S212 Tchebycheff test function of slow growth, P213 Tchebycheff test function with compact support, D207 Tchebycheff test function without constraint, E214 Theorem, Gram — Schmidt13 Theorem, Pythagorean722 Theorem, Riesz — Fischer14 Theorem, Riesz — Frechet12 Three term recurrence relation225238244247250262267271276282287297 Unbounded linear operator41 Unitary19 Weight equation244246250263264 Weight function281 Weight function, distributional261 Weight functional223 Weight problem257 Weyl circle165 Weyl — Titchmarsh limit point-limit circle theory315 Zettl, Tonyxiii ||A||, operator norm of A18