The Role of the Spectrum in the Cyclic Behavior of Composition Operators

The Role of the Spectrum in the Cyclic Behavior of Composition Operators
Title The Role of the Spectrum in the Cyclic Behavior of Composition Operators PDF eBook
Author Eva A. Gallardo-Gutieŕrez
Publisher American Mathematical Soc.
Pages 98
Release 2004
Genre Mathematics
ISBN 0821834320

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Introduction and preliminaries Linear fractional maps with an interior fixed point Non elliptic automorphisms The parabolic non automorphism Supercyclic linear fractional composition operators Endnotes Bibliography.

Topics in Operator Theory

Topics in Operator Theory
Title Topics in Operator Theory PDF eBook
Author Joseph A. Ball
Publisher Springer Science & Business Media
Pages 624
Release 2011-02-09
Genre Mathematics
ISBN 3034601581

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This is the first volume of a collection of original and review articles on recent advances and new directions in a multifaceted and interconnected area of mathematics and its applications. It encompasses many topics in theoretical developments in operator theory and its diverse applications in applied mathematics, physics, engineering, and other disciplines. The purpose is to bring in one volume many important original results of cutting edge research as well as authoritative review of recent achievements, challenges, and future directions in the area of operator theory and its applications.

The Role of the Spectrum in the Cyclic Behavior of Composition Operators

The Role of the Spectrum in the Cyclic Behavior of Composition Operators
Title The Role of the Spectrum in the Cyclic Behavior of Composition Operators PDF eBook
Author Eva A. Gallardo-Gutieŕrez
Publisher
Pages 98
Release 2014-09-11
Genre Function spaces
ISBN 9781470403898

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A bounded operator $T$ acting on a Hilbert space $\mathcal H$ is called cyclic if there is a vector $x$ such that the linear span of the orbit $\{T DEGREESn x: n \geq 0 \}$ is dense in $\mathcal H$. If the scalar multiples of the orbit are dense, then $T$ is called supercyclic. Finally, if the orbit itself is dense, then $T$ is called hyper

Studies on Composition Operators

Studies on Composition Operators
Title Studies on Composition Operators PDF eBook
Author Rocky Mountain Mathematics Consortium
Publisher American Mathematical Soc.
Pages 266
Release 1998
Genre Mathematics
ISBN 0821807684

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This book reflects the proceedings of the 1996 Rocky Mountain Mathematics Consortium conference on "Composition Operators on Spaces of Analytic Functions" held at the University of Wyoming. The readers will find here a collection of high-quality research and expository articles on composition operators in one and several variables. The book highlights open questions and new advances in the classical areas and promotes topics which are left largely untreated in the existing texts. In the past two decades, the study of composition operators has experienced tremendous growth. Many connections between the study of these operators on various function spaces and other branches of analysis have been established. Advances in establishing criteria for membership in different operator classes have led to progress in the study of the spectra, adjoints, and iterates of these operators. More recently, connections between these operators and the study of the invariant subspace problem, functional equations, and dynamical systems have been exploited.

Local Zeta Functions Attached to the Minimal Spherical Series for a Class of Symmetric Spaces

Local Zeta Functions Attached to the Minimal Spherical Series for a Class of Symmetric Spaces
Title Local Zeta Functions Attached to the Minimal Spherical Series for a Class of Symmetric Spaces PDF eBook
Author Nicole Bopp
Publisher American Mathematical Soc.
Pages 250
Release 2005
Genre Mathematics
ISBN 0821836234

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Intends to prove a functional equation for a local zeta function attached to the minimal spherical series for a class of real reductive symmetric spaces.

A Generating Function Approach to the Enumeration of Matrices in Classical Groups over Finite Fields

A Generating Function Approach to the Enumeration of Matrices in Classical Groups over Finite Fields
Title A Generating Function Approach to the Enumeration of Matrices in Classical Groups over Finite Fields PDF eBook
Author Jason Fulman
Publisher American Mathematical Soc.
Pages 104
Release 2005
Genre Mathematics
ISBN 0821837060

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Generating function techniques are used to study the probability that an element of a classical group defined over a finite field is separable, cyclic, semisimple or regular. The limits of these probabilities as the dimension tends to infinity are calculated in all cases, and exponential convergence to the limit is proved. These results complement and extend earlier results of the authors, G. E. Wall, and Guralnick & Lubeck.

Quasi-Ordinary Power Series and Their Zeta Functions

Quasi-Ordinary Power Series and Their Zeta Functions
Title Quasi-Ordinary Power Series and Their Zeta Functions PDF eBook
Author Enrique Artal-Bartolo
Publisher American Mathematical Soc.
Pages 100
Release 2005-10-05
Genre Functions, Zeta
ISBN 9780821865637

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The main objective of this paper is to prove the monodromy conjecture for the local Igusa zeta function of a quasi-ordinary polynomial of arbitrary dimension defined over a number field. In order to do it, we compute the local Denef-Loeser motivic zeta function $Z_{\text{DL}}(h,T)$ of a quasi-ordinary power series $h$ of arbitrary dimension over an algebraically closed field of characteristic zero from its characteristic exponents without using embedded resolution of singularities. This allows us to effectively represent $Z_{\text{DL}}(h,T)=P(T)/Q(T)$ such that almost all the candidate poles given by $Q(T)$ are poles. Anyway, these candidate poles give eigenvalues of the monodromy action on the complex $R\psi_h$ of nearby cycles on $h^{-1}(0).$ In particular we prove in this case the monodromy conjecture made by Denef-Loeser for the local motivic zeta function and the local topological zeta function. As a consequence, if $h$ is a quasi-ordinary polynomial defined over a number field we prove the Igusa monodromy conjecture for its local Igusa zeta function.