$q$-Difference Operators, Orthogonal Polynomials, and Symmetric Expansions

$q$-Difference Operators, Orthogonal Polynomials, and Symmetric Expansions
Author: Douglas Bowman
Publisher: American Mathematical Soc.
Total Pages: 73
Release: 2002
Genre: Mathematics
ISBN: 082182774X


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The author explores ramifications and extensions of a $q$-difference operator method first used by L.J. Rogers for deriving relationships between special functions involving certain fundamental $q$-symmetric polynomials. In special cases these symmetric polynomials reduce to well-known classes of orthogonal polynomials. A number of basic properties of these polynomials follow from this approach. This leads naturally to the evaluation of the Askey-Wilson integral and generalizations. Expansions of certain generalized basic hypergeometric functions in terms of the symmetric polynomials are also found. This provides a quick route to understanding the group structure generated by iterating the two-term transformations of these functions. Some infrastructure is also laid for more general investigations in the future

Frontiers In Orthogonal Polynomials And Q-series

Frontiers In Orthogonal Polynomials And Q-series
Author: M Zuhair Nashed
Publisher: World Scientific
Total Pages: 577
Release: 2018-01-12
Genre: Mathematics
ISBN: 981322889X


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This volume aims to highlight trends and important directions of research in orthogonal polynomials, q-series, and related topics in number theory, combinatorics, approximation theory, mathematical physics, and computational and applied harmonic analysis. This collection is based on the invited lectures by well-known contributors from the International Conference on Orthogonal Polynomials and q-Series, that was held at the University of Central Florida in Orlando, on May 10-12, 2015. The conference was dedicated to Professor Mourad Ismail on his 70th birthday.The editors strived for a volume that would inspire young researchers and provide a wealth of information in an engaging format. Theoretical, combinatorial and computational/algorithmic aspects are considered, and each chapter contains many references on its topic, when appropriate.

Gromov-Hausdorff Distance for Quantum Metric Spaces/Matrix Algebras Converge to the Sphere for Quantum Gromov-Hausdorff Distance

Gromov-Hausdorff Distance for Quantum Metric Spaces/Matrix Algebras Converge to the Sphere for Quantum Gromov-Hausdorff Distance
Author: Marc Aristide Rieffel
Publisher: American Mathematical Soc.
Total Pages: 106
Release: 2004
Genre: Mathematics
ISBN: 0821835181


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By a quantum metric space we mean a $C DEGREES*$-algebra (or more generally an order-unit space) equipped with a generalization of the usual Lipschitz seminorm on functions which one associates to an ordinary metric. We develop for compact quantum metric spaces a version of Gromov-Hausdorff di

$S$-Modules in the Category of Schemes

$S$-Modules in the Category of Schemes
Author: Po Hu
Publisher: American Mathematical Soc.
Total Pages: 141
Release: 2003
Genre: Mathematics
ISBN: 0821829564


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Gives a theory $S$-modules for Morel and Voevodsky's category of algebraic spectra over an arbitrary field $k$. This work also defines universe change functors, as well as other important constructions analogous to those in topology, such as the twisted half-smash product.

On Central Critical Values of the Degree Four $L$-functions for $\mathrm {GSp}(4)$: The Fundamental Lemma

On Central Critical Values of the Degree Four $L$-functions for $\mathrm {GSp}(4)$: The Fundamental Lemma
Author: Masaaki Furusawa
Publisher: American Mathematical Soc.
Total Pages: 158
Release: 2003
Genre: Mathematics
ISBN: 0821833286


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Proves two equalities of local Kloosterman integrals on $\mathrm{GSp}\left(4\right)$, the group of $4$ by $4$ symplectic similitude matrices. This book conjectures that both of Jacquet's relative trace formulas for the central critical values of the $L$-functions for $\mathrm{g1}\left(2\right)$ in [{J1}] and [{J2}].

Topological Invariants for Projection Method Patterns

Topological Invariants for Projection Method Patterns
Author: Alan Forrest
Publisher: American Mathematical Soc.
Total Pages: 137
Release: 2002
Genre: Mathematics
ISBN: 0821829653


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This memoir develops, discusses and compares a range of commutative and non-commutative invariants defined for projection method tilings and point patterns. The projection method refers to patterns, particularly the quasiperiodic patterns, constructed by the projection of a strip of a high dimensional integer lattice to a smaller dimensional Euclidean space. In the first half of the memoir the acceptance domain is very general - any compact set which is the closure of its interior - while in the second half the authors concentrate on the so-called canonical patterns. The topological invariants used are various forms of $K$-theory and cohomology applied to a variety of both $C DEGREES*$-algebras and dynamical systems derived from such a p

Positive Definite Functions on Infinite-Dimensional Convex Cones

Positive Definite Functions on Infinite-Dimensional Convex Cones
Author: Helge Glöckner
Publisher: American Mathematical Soc.
Total Pages: 150
Release: 2003
Genre: Mathematics
ISBN: 0821832565


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A memoir that studies positive definite functions on convex subsets of finite- or infinite-dimensional vector spaces. It studies representations of convex cones by positive operators on Hilbert spaces. It also studies the interplay between positive definite functions and representations of convex cones.

Quasianalytic Monogenic Solutions of a Cohomological Equation

Quasianalytic Monogenic Solutions of a Cohomological Equation
Author: Stefano Marmi
Publisher: American Mathematical Soc.
Total Pages: 98
Release: 2003
Genre: Mathematics
ISBN: 0821833251


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We prove that the solutions of a cohomological equation of complex dimension one and in the analytic category have a monogenic dependence on the parameter. This cohomological equation is the standard linearized conjugacy equation for germs of holomorphic maps in a neighborhood of a fixed point.