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Название: Classes of linear operators. (volume 1)
Авторы: Gohberg I., Goldberg S., Kaashoek M.
Аннотация:
This book presents a panorama of operator theory. It treats a variety of classes of linear operators which illustrate the richness of the theory, both in its theoretical developments and its applications. For each of the classes various differential and integral operators motivate or illustrate the main results. The topics have been updated and enhanced by new developments, many of which appear here for the first time. Interconnections appear frequently and unexpectedly.
This second volume consists of five parts: triangular representations, classes of Toeplitz operators, contractive operators and characteristic operator functions, Banach algebras and algebras of operators, and extension and completion problems. The exposition is self-contained and has been simplified and polished in an effort to make advanced topics accessible to a wide audience of students and researchers in mathematics, science and engineering.
Publication date: September 1993 Of interest to: Researchers, graduate students Codes: M16002, M16126, M16088, M16096 Classes of Linear Operators Vol. I This book presents a panorama of operator theory. It treats a variety of classes of linear operators which illustrate the richness of the theory, both in its theoretical developments and its applications. For each of the classes various differential and integral operators motivate or illustrate the main results. The topics have been updated and enhanced by new developments, many of which appear here for the first time. Interconnections appear frequently and unexpectedly.
The present volume consists of four parts: general spectral theory, classes of compact operators, Fredholm and Wiener-Hopf operators, and classes of unbounded operators: The exposition is self-contained and has been simplified and polished in an effort to make advanced topics accessible to a wide audience of students and researchers in mathematics, science and engineering.
a space of functions on the interval J295 imaginary part of the operator A135146 real part of the operator A146 non-negative operator A82 -solution408 a set of differentiate functions on 310 a set of differentiable functions on 310 the set of -functions on 310 the set of -functions with compact support in 310 semigroup415 elementary differential operator310 a space spanned by eigenvectors and generalized eigenvectors31 closure of in 313 Sobolev space of order m313 identity operator on X5 Lebesgue space of -valued functions148 Riesz projection9 orthogonal complement of S, and also at times, annihilator of S292 the trace class operators105 the Hilbert — Schmidt operators143 (A) j-th singular value of the operator A96212 maximal operator295 minimal operator300 a differential operator300 numerical range of A167 empty set143 the imaginary part of the complex number 5 field of complex numbers5 open unit disk in the complex plane310 domain of the operator A288 the set of compact operators on the Banach space X191 (X) Banach space of all bounded linear operators on X5 (X,Y) Banach space of all bounded linear operators from X into Y5 a family of analytic functions associated with a bounded operator A13 a family of analytic functions associated with an unbounded operator A323 unit circle in the complex plane191373 (A) number of non-zero singular values of A96 minimal closed linear extension of the operator A289 (A) resolvent set of the operator A5 (G,A) resolvent set of the pencil G - A49 (A) spectrum of the operator A5 (G, A) spectrum of the operator pencil G — A49 (A) essential spectrum of the operator A191373 trace class norm of A106 Hilbert — Schmidt norm of A143 inverse annihilator of N292 transpose of the row vector ()292 (A) j-th eigenvalue of the compact operator A30 complex Euclidean n-space5 the extended complex plane49 real Euclidean n-space9 a set of rational matrix functions232 boundary of the open set 315 real part of the complex number A9 <> product292 A' conjugate of the operator A292 A(XY) operator A with domain in X and range in Y288 A* (Hilbert space) adjoint of the operator A291 a-invariant326 Abstract Cauchy problem408 Adjoint boundary conditions306 Adjoint of an unbounded operator290 Adjoint of differential operators301321383 Adjoint, Lagrange adjoint301309318 Algebraic multiplicity of an eigenvalue for operator functions205 Algebraic multiplicity of an eigenvalue for operators26 Algebraic multiplicity of an eigenvalue relative to a contour205 Analytic at a point6 Analytic on a set6 Analytically matricially coupled46 Associated operator54 Asymptotically stable, difference equation58 Asymptotically stable, differential equation20 Asymptotically stable, solution20 A|N restriction of A to the subspace of N8326 Bijection, associated with an operator188 Boundary of class 315 Bounded resolution of identity72 C([a,b]) the space of complex-valued continuous functions on [a,b]288 Calkin algebra191 Canonical factorization235 Cauchy contour6 Cauchy domain6 Cayley transform346 Closable operator289 Closed linear extension289 Closed linear extension, minimal289 Compact semigroup435 Complete system of eigenvectors and generalized, eigenvectors135378 Completeness problem of29 Conjugate of an unbounded operator292 Continuously differentiable solution408 Contraction semigroup427 Convolution operator with symbol216 Coupling matrices45 Coupling relation45 d(A) codimension of the range of A184 Derivative7 Derivative, weak derivative312 det A determinant of an operator matrix A194 det(I + A) determinant of I + A with A a trace class operator117 Determinant114 Determinant, analyticity of119 Differentiable7 Differential operator295316382399 Differential operator, adjoint of301321383 Differential operator, higher order399 Differential operator, on a half line382 Differential operator, selfadjoint341 Differential operator, uniformly elliptic316 dim M dimension of the linear space M117 Dirichlet operator316 Dirichlet operator, adjoint of321 Dissipative operator on a Banach space429 Dissipative operator on a Hilbert space428 Divergence form316 Domain, Cauchy domain6 Domain, inner domain49 Domain, outer domain49 E(t) orthogonal projection in a resolution of the identity72 Eigenvalue of an unbounded operator349 Eigenvalue of finite type for a bounded operator25 Eigenvalue of finite type for an operator function205 Eigenvalue of finite type for an unbounded operator326 Eigenvector of an unbounded operator349 Eigenvector of an unbounded operator, generalized378 Elementary solutions29 Equivalent, globally equivalent38 Equivalent, locally equivalent42 Equivalent, strictly equivalent237 Essential spectrum for a bounded operator191 Essential spectrum for an unbounded operator373 Exponential representation268 Exponential type zero122 Extension38 Extension of an unbounded operator290 Factorization, canonical235 Factorization, indices235 Factorization, left Wiener — Hopf235 Factorization, right Wiener — Hopf235236 Factorization, Wiener — Hopf234 Final space of a partial isometry84 Finite slab problem274 Finitely meromorphic206 First kind Wiener — Hopf operator398 Fourier transform217 Fourier transformation217 Fredholm operator, bounded184 Fredholm operator, perturbation of189376 Fredholm operator, unbounded372