Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Composition operator"”.
-
Kernels of adjoints of composition operators on Hilbert spaces of analytic functions
… of results in the study of the adjoint of a composition operator and its kernel in weighted Hardy spaces, in particular, the classical Hardy, Bergman, and Dirichlet spaces. In 2006, Cowen and Gallardo-Gutiérrez laid the groundwork for an explicit formula for the adjoint of a composition …
-
Isometries of Besov Type Spaces among Composition Operators
… Phi, a holomorphic self map of D, we show the composition operator CPhi is an isometry on Bp,alpha if and only if the weighted composition operator WPhiPhi, is an isometry on the weighted Bergman space Ap,alpha. We then characterize isometries among composition operators in Bp,alpha in terms of …
-
Closed-Range Composition Operators on Weighted Bergman Spaces and Applications
… necessary and sufficient conditions for a Composition Operator to be closed range on the weighted Bergman spaces. The function phi is an analytic self map of the unit disk and our results extend those previously intended for the classical Bergman space. We will also give applications. </p>
-
Generalized Synchronization Trees
… natural setting for studying bisimulation and composition. In this thesis, we study both matters from a number of different perspectives: different notions of bisimulation over GSTs are defined and their (unexpected) semantic differences are established; the relationship of GSTs to behavioral, …
-
Closed Range Composition Operators on BMOA
… be an analytic self-map of the unit disk D. The composition operator with symbol φ is denoted by Cφ. Reverse Carleson type conditions, counting functions and sampling sets are important tools to give a complete characterization of closed range composition operators on BMOA and on Qp for all p ∈ …
-
Isometries on symmetric spaces associated with semi-finite von Neumann algebras
… can typically be characterized as weighted composition operators. In the non-commutative setting, isometries between symmetric spaces (of trace-measurable operators) can often be described in terms of a Jordan ✽-homomorphism (which may be considered a non-commutative composition operator) …
-
Peripherally-Multiplicative Spectral Preservers Between Function Algebras
… for maps between function algebras to be composition or weighted composition operators, which extend previous results regarding spectral conditions for maps between uniform algebras. Let X and Y be a locally compact Hausdorff spaces, where A \subset C(X) and B \subset C(Y) are function …
-
Peripherally-Multiplicative Spectral Preservers Between Function Algebras
… for maps between function algebras to be composition or weighted composition operators, which extend previous results regarding spectral conditions for maps between uniform algebras. Let X and Y be a locally compact Hausdorff spaces, where A \subset C(X) and B \subset C(Y) are function …
-
Dynamic recomposition of documents from distributed data sources
Dynamic recomposition of documents refers to the process of on-the-fly creation of documents. A document can be generated from several documents that are stored at distributed data sites. The source can be queried and results obtained in the form of XML. These XML documents can be combined after a …
-
Toeplitzness of Composition Operators and Parametric Toeplitzness
… of the <span>\mathbb{U}</span>-automorphic composition operators, acting on the monomial basis for $H^2(\mathbb{U})$; which is used as one of the major tools later in Chapter 3.</p><p>In Chapter 2, we introduce the class of Parametric Toepliz operators(PTOs) as the solutions to the …
-
Spectral Preserver Problems in Uniform Algebras
… g</b> in <b>A</b>, then <b>T</b> is a weighted composition operator composed with a conjugation operator. In particular, if <b>T</b>1 = 1 and <b>Ti</b> = <b>i</b> then <b>T</b> is an isometric algebra isomorphism. </p>
-
Spectral Preserver Problems in Uniform Algebras
… g</b> in <b>A</b>, then <b>T</b> is a weighted composition operator composed with a conjugation operator. In particular, if <b>T</b>1 = 1 and <b>Ti</b> = <b>i</b> then <b>T</b> is an isometric algebra isomorphism. </p>
-
Composition structures for system representation
… that can be interpreted as different types of composition. We refer to the term composition as the systematic replacement of elements in an object by other object modules, where the objects can be functions that have a single or multiple input variables as well as operators that work on a set …