Harmonic Analysis on Semigroups
Theory of Positive Definite and Related Functions
(Sprache: Englisch)
The Fourier transform and the Laplace transform of a positive measure share, together with its moment sequence, a positive definiteness property which under certain regularity assumptions is characteristic for such expressions. This is formulated in exact...
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Klappentext zu „Harmonic Analysis on Semigroups “
The Fourier transform and the Laplace transform of a positive measure share, together with its moment sequence, a positive definiteness property which under certain regularity assumptions is characteristic for such expressions. This is formulated in exact terms in the famous theorems of Bochner, Bernstein-Widder and Hamburger. All three theorems can be viewed as special cases of a general theorem about functions qJ on abelian semigroups with involution (S, +, ) which are positive definite in the sense that the matrix (qJ(sJ + Sk» is positive definite for all finite choices of elements St, . . . , Sn from S. The three basic results mentioned above correspond to (~, +, x = -x), ([0, 00[, +, x = x) and (No, +, n = n). The purpose of this book is to provide a treatment of these positive definite functions on abelian semigroups with involution. In doing so we also discuss related topics such as negative definite functions, completely mono tone functions and Hoeffding-type inequalities. We view these subjects as important ingredients of harmonic analysis on semigroups. It has been our aim, simultaneously, to write a book which can serve as a textbook for an advanced graduate course, because we feel that the notion of positive definiteness is an important and basic notion which occurs in mathematics as often as the notion of a Hilbert space.
Inhaltsverzeichnis zu „Harmonic Analysis on Semigroups “
1 Introduction to Locally Convex Topological Vector Spaces and Dual Pairs.-1. Locally Convex Vector Spaces.-
2. Hahn-Banach Theorems.-
3. Dual Pairs.- Notes and Remarks.- 2 Radon Measures and Integral Representations.-
1. Introduction to Radon Measures on Hausdorff Spaces.-
2. The Riesz Representation Theorem.-
3. Weak Convergence of Finite Radon Measures.-
4. Vague Convergence of Radon Measures on Locally Compact Spaces.-
5. Introduction to the Theory of Integral Representations.- Notes and Remarks.- 3 General Results on Positive and Negative Definite Matrices and Kernels.-
1. Definitions and Some Simple Properties of Positive and Negative Definite Kernels.-
2. Relations Between Positive and Negative Definite Kernels.-
3. Hubert Space Representation of Positive and Negative Definite Kernels.- Notes and Remarks.- 4 Main Results on Positive and Negative Definite Functions on Semigroups.-
1. Definitions and Simple Properties 86
2. Exponentially Bounded Positive Definite Functions on Abelian Semigroups.-
3. Negative Definite Functions on Abelian Semigroups.-
4. Examples of Positive and Negative Definite Functions.-
5. T-Positive Functions.-
6. Completely Monotone and Alternating Functions.- Notes and Remarks.- 5 Schoenberg-Type Results for Positive and Negative Definite Functions.-
1. Schoenberg Triples.-
2. Norm Dependent Positive Definite Functions on Banach Spaces.-
3. Functions Operating on Positive Definite Matrices.-
4. Schoenberg's Theorem for the Complex Hilbert Sphere.-
5. The Real Infinite Dimensional Hyperbolic Space.- Notes and Remarks.- 6 Positive Definite Functions and Moment Functions.-
1. Moment Functions.-
2. The One-Dimensional Moment Problem.-
3. The Multi-Dimensional Moment Problem.-
4. The Two-Sided Moment Problem.-
5. Perfect Semigroups.- Notes and Remarks.- 7 Hoeffding's Inequality and Multivariate Majorization.-
1. The Discrete Case.-
2. Extension to Nondiscrete Semigroups.-
3. Completely Negative Definite
... mehr
Functions and Schur-Monotonicity.- Notes and Remarks.- 8 Positive and Negative Definite Functions on Abelian Semigroups Without Zero.-
1. Quasibounded Positive and Negative Definite Functions.-
2. Completely Monotone and Completely Alternating Functions.- Notes and Remarks.- References.- List of Symbols.
1. Quasibounded Positive and Negative Definite Functions.-
2. Completely Monotone and Completely Alternating Functions.- Notes and Remarks.- References.- List of Symbols.
... weniger
Bibliographische Angaben
- Autoren: C. van den Berg , J. P. R. Christensen , P. Ressel
- 1984, 1984., 292 Seiten, Maße: 23,5 cm, Gebunden, Englisch
- Verlag: Springer, New York
- ISBN-10: 0387909257
- ISBN-13: 9780387909257
Sprache:
Englisch
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