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This is the first volume of a two volume set that provides a modern account of basic Banach algebra theory including all known results on general Banach *-algebras. This account emphasises the role of *-algebra structure and explores the algebraic results which underlie the theory of Banach algebras and *-algebras. This first volume is an independent, self-contained reference on Banach algebra theory. Each topic is treated in the maximum interesting generality within the framework of some class complex algebras rather than topological algebras. In both volumes proofs are presented in complete detail at a level accessible to graduate students. In addition, the books contain a wealth of historical comments, background material, examples, particularly in noncommutative harmonic analysis, and an extensive bibliography. Together these books will become the standard reference for the general theory of *-algebras.
Operator theory --- Banach algebras --- Banach algebras. --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Algebres de banach --- Algebres topologiques --- C star algebres
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In this book, ultrametric Banach algebras are studied with the help of topological considerations, properties from affinoid algebras, and circular filters which characterize absolute values on polynomials and make a nice tree structure. The Shilov boundary does exist for normed ultrametric algebras. In uniform Banach algebras, the spectral norm is equal to the supremum of all continuous multiplicative seminorms whose kernel is a maximal ideal. Two different such seminorms can have the same kernel. Krasner-Tate algebras are characterized among Krasner algebras, affinoid algebras, and ultrametric Banach algebras. Given a Krasner-Tate algbebra A=K{t}[x], the absolute values extending the Gauss norm from K{t} to A are defined by the elements of the Shilov boundary of A.
Banach algebras. --- Topological algebras. --- Algebras, Topological --- Functional analysis --- Linear topological spaces --- Rings (Algebra) --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras
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Functional analysis --- Banach algebras --- 517.986 --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Topological algebras. Theory of infinite-dimensional representations --- Banach algebras. --- 517.986 Topological algebras. Theory of infinite-dimensional representations --- Banach, Algèbres de
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In these notes the abstract theory of analytic one-parameter semigroups in Banach algebras is discussed, with the Gaussian, Poisson and fractional integral semigroups in convolution Banach algebras serving as motivating examples. Such semigroups are constructed in a Banach algebra with a bounded approximate identity. Growth restrictions on the semigroup are linked to the structure of the underlying Banach algebra. The Hille-Yosida Theorem and a result of J. Esterle's on the nilpotency of semigroups are proved in detail. The lecture notes are an expanded version of lectures given by the author at the University of Edinburgh in 1980 and can be used as a text for a graduate course in functional analysis.
Banach algebras. --- Semigroups. --- Group theory --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Banach algebras --- Semigroups --- Banach, Algèbres de --- Semi-groupes --- Ordered algebraic structures --- Analytical spaces
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Functional analysis --- Banach algebras. --- Banach, Algèbres de --- Ideals (Algebra) --- Idéaux (algèbre) --- Modules (Algebra) --- Modules (algèbre) --- Continuity. --- Banach algebras --- Continuity --- Finite number systems --- Modular systems (Algebra) --- Algebra --- Finite groups --- Rings (Algebra) --- Algebraic ideals --- Algebraic fields --- Continuum --- Mathematics --- Indivisibles (Philosophy) --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Philosophy --- Banach, Algèbres de.
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Analytical spaces --- Banach algebras --- 517.9 --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Differential equations. Integral equations. Other functional equations. Finite differences. Calculus of variations. Functional analysis --- Banach algebras. --- 517.9 Differential equations. Integral equations. Other functional equations. Finite differences. Calculus of variations. Functional analysis --- Algèbres topologiques. --- Topological algebras. --- Analyse fonctionnelle --- Functional analysis --- Algèbres topologiques. --- Banach, Algèbres de
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Harmonic analysis. Fourier analysis --- Banach algebras --- Hardy classes --- Invariant subspaces --- Riemann surfaces --- Surfaces, Riemann --- Functions --- Subspaces, Invariant --- Functional analysis --- Hilbert space --- Classes, Hardy --- Hp classes --- Function algebras --- Functions of complex variables --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Riemann surfaces. --- Hardy classes. --- Invariant subspaces. --- Banach algebras. --- Banach, Algèbres de. --- Sous-espaces invariants. --- Hardy, Classes de. --- Riemann, Surfaces de.
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Harmonic analysis. Fourier analysis --- Banach algebras. --- Measure algebras. --- Topological groups. --- Groupes topologiques. --- Algèbres de mesures. --- Banach algebras --- Measure algebras --- Topological groups --- Groups, Topological --- Continuous groups --- Algebras, Measure --- Harmonic analysis --- Measure theory --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras
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Analytical spaces --- Function algebras --- Banach algebras --- Algèbres de fonctions --- Banach, Algèbres de --- 517.98 --- Algebras, Function --- Analytic functions --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Functional analysis and operator theory --- Banach algebras. --- Function algebras. --- 517.98 Functional analysis and operator theory --- Algèbres de fonctions --- Banach, Algèbres de --- Fonctions de plusieurs variables complexes
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Analytical spaces --- Banach algebras --- Linear operators --- Power series --- Series, Power --- Linear maps --- Maps, Linear --- Operators, Linear --- Operator theory --- Algebras, Banach --- Banach rings --- Metric rings --- Normed rings --- Banach spaces --- Topological algebras --- Banach algebras. --- Banach, Algèbres de. --- Power series. --- Séries de puissances. --- Linear operators. --- Opérateurs linéaires.
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