The Major Counting of Nonintersecting Lattice Paths and Generating Functions for Tableaux

The Major Counting of Nonintersecting Lattice Paths and Generating Functions for Tableaux PDF Author: Christian Krattenthaler
Publisher: American Mathematical Soc.
ISBN: 0821826131
Category : Mathematics
Languages : en
Pages : 122

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Book Description
A theory of counting nonintersecting lattice paths by the major index and its generalizations is developed. We obtain determinantal expressions for the corresponding generating functions for families of nonintersecting lattice paths with given starting points and given final points, where the starting points lie on a line parallel to [italic]x + [italic]y = 0. In some cases these determinants can be evaluated to result in simple products. As applications we compute the generating function for tableaux with [italic]p odd rows, with at most [italic]c columns, and with parts between 1 and [italic]n. Moreover, we compute the generating function for the same kind of tableaux which in addition have only odd parts. We thus also obtain a closed form for the generating function for symmetric plane partitions with at most [italic]n rows, with parts between 1 and [italic]c, and with [italic]p odd entries on the main diagonal. In each case the result is a simple product. By summing with respect to [italic]p we provide new proofs of the Bender-Knuth and MacMahon (ex-)conjectures, which were first proved by Andrews, Gordon, and Macdonald. The link between nonintersecting lattice paths and tableaux is given by variations of the Knuth correspondence.

The Major Counting of Nonintersecting Lattice Paths and Generating Functions for Tableaux

The Major Counting of Nonintersecting Lattice Paths and Generating Functions for Tableaux PDF Author: Christian Krattenthaler
Publisher: American Mathematical Soc.
ISBN: 0821826131
Category : Mathematics
Languages : en
Pages : 122

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Book Description
A theory of counting nonintersecting lattice paths by the major index and its generalizations is developed. We obtain determinantal expressions for the corresponding generating functions for families of nonintersecting lattice paths with given starting points and given final points, where the starting points lie on a line parallel to [italic]x + [italic]y = 0. In some cases these determinants can be evaluated to result in simple products. As applications we compute the generating function for tableaux with [italic]p odd rows, with at most [italic]c columns, and with parts between 1 and [italic]n. Moreover, we compute the generating function for the same kind of tableaux which in addition have only odd parts. We thus also obtain a closed form for the generating function for symmetric plane partitions with at most [italic]n rows, with parts between 1 and [italic]c, and with [italic]p odd entries on the main diagonal. In each case the result is a simple product. By summing with respect to [italic]p we provide new proofs of the Bender-Knuth and MacMahon (ex-)conjectures, which were first proved by Andrews, Gordon, and Macdonald. The link between nonintersecting lattice paths and tableaux is given by variations of the Knuth correspondence.

Lectures on Hyponormal Operators

Lectures on Hyponormal Operators PDF Author: Mihai Putinar
Publisher: Birkhäuser
ISBN: 3034874669
Category : Mathematics
Languages : en
Pages : 295

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Book Description
The present lectures are based on a course deli vered by the authors at the Uni versi ty of Bucharest, in the winter semester 1985-1986. Without aiming at completeness, the topics selected cover all the major questions concerning hyponormal operators. Our main purpose is to provide the reader with a straightforward access to an active field of research which is strongly related to the spectral and perturbation theories of Hilbert space operators, singular integral equations and scattering theory. We have in view an audience composed especially of experts in operator theory or integral equations, mathematical physicists and graduate students. The book is intended as a reference for the basic results on hyponormal operators, but has the structure of a textbook. Parts of it can also be used as a second year graduate course. As prerequisites the reader is supposed to be acquainted with the basic principles of functional analysis and operator theory as covered for instance by Reed and Simon [1]. A t several stages of preparation of the manuscript we were pleased to benefit from proper comments made by our cOlleagues: Grigore Arsene, Tiberiu Constantinescu, Raul Curto, Jan Janas, Bebe Prunaru, Florin Radulescu, Khrysztof Rudol, Konrad Schmudgen, Florian-Horia Vasilescu. We warmly thank them all. We are indebted to Professor Israel Gohberg, the editor of this series, for his constant encouragement and his valuable mathematical advice. We wish to thank Mr. Benno Zimmermann, the Mathematics Editor at Birkhauser Verlag, for cooperation and assistance during the preparation of the manuscript.

Manifolds with Group Actions and Elliptic Operators

Manifolds with Group Actions and Elliptic Operators PDF Author: Vladimir I︠A︡kovlevich Lin
Publisher: American Mathematical Soc.
ISBN: 0821826042
Category : Mathematics
Languages : en
Pages : 90

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Book Description
This work studies equivariant linear second order elliptic operators [italic capital]P on a connected noncompact manifold [italic capital]X with a given action of a group [italic capital]G. The action is assumed to be cocompact, meaning that [italic capitals]GV = [italic capital]X for some compact subset of [italic capital]V of [italic capital]X. The aim is to study the structure of the convex cone of all positive solutions of [italic capital]P[italic]u = 0.

An Arithmetic Riemann-Roch Theorem for Singular Arithmetic Surfaces

An Arithmetic Riemann-Roch Theorem for Singular Arithmetic Surfaces PDF Author: Wayne Aitken
Publisher: American Mathematical Soc.
ISBN: 0821804073
Category : Mathematics
Languages : en
Pages : 189

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Book Description
The following gives a development of Arakelov theory general enough to handle not only regular arithmetic surfaces but also a large class of arithmetic surfaces whose generic fiber has singularities. This development culminates in an arithmetic Riemann-Roch theorem for such arithmetic surfaces. The first part of the memoir gives a treatment of Deligne's functorial intersection theory, and the second develops a class of intersection functions for singular curves which behaves analogously to the canonical Green's functions introduced by Arakelov for smooth curves.

Some Special Properties of the Adjunction Theory for $3$-Folds in $\mathbb P^5$

Some Special Properties of the Adjunction Theory for $3$-Folds in $\mathbb P^5$ PDF Author: Mauro Beltrametti
Publisher: American Mathematical Soc.
ISBN: 0821802348
Category : Mathematics
Languages : en
Pages : 79

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Book Description
This work studies the adjunction theory of smooth 3-folds in P]5. Because of the many special restrictions on such 3-folds, the structure of the adjunction theoretic reductions are especially simple, e.g. the 3-fold equals its first reduction, the second reduction is smooth except possibly for a few explicit low degrees, and the formulae relating the projective invariants of the given 3-fold with the invariants of its second reduction are very explicit. Tables summarizing the classification of such 3-folds up to degree 12 are included. Many of the general results are shown to hold for smooth projective n-folds embedded in P]N with N 2n -1.

Hilbert Modules over Operator Algebras

Hilbert Modules over Operator Algebras PDF Author: Paul S. Muhly
Publisher: American Mathematical Soc.
ISBN: 0821803468
Category : Mathematics
Languages : en
Pages : 69

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Book Description
Addresses the three-dimensional generalization of category, offering a full definition of tricategory; a proof of the coherence theorem for tricategories; and a modern source of material on Gray's tensor product of 2-categories. Of interest to research mathematicians; theoretical physicists, algebraic topologists; 3-D computer scientists; and theoretical computer scientists. Society members, $19.00. No index. Annotation copyright by Book News, Inc., Portland, OR

Hilbert's Projective Metric and Iterated Nonlinear Maps

Hilbert's Projective Metric and Iterated Nonlinear Maps PDF Author: Roger D. Nussbaum
Publisher: American Mathematical Soc.
ISBN: 0821824546
Category : Mathematics
Languages : en
Pages : 148

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Book Description


Shortest Paths for Sub-Riemannian Metrics on Rank-Two Distributions

Shortest Paths for Sub-Riemannian Metrics on Rank-Two Distributions PDF Author: Wensheng Liu
Publisher: American Mathematical Soc.
ISBN: 0821804049
Category : Mathematics
Languages : en
Pages : 121

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Book Description
A sub-Riemannian manifold ([italic capitals]M, E, G) consists of a finite-dimensional manifold [italic capital]M, a rank-two bracket generating distribution [italic capital]E on [italic capital]M, and a Riemannian metric [italic capital]G on [italic capital]E. All length-minimizing arcs on ([italic capitals]M, E, G) are either normal extremals or abnormal extremals. Normal extremals are locally optimal, i.e., every sufficiently short piece of such an extremal is a minimizer. The question whether every length-minimizer is a normal extremal was recently settled by R. G. Montgomery, who exhibited a counterexample. The present work proves that regular abnormal extremals are locally optimal, and, in the case that [italic capital]E satisfies a mild additional restriction, the abnormal minimizers are ubiquitous rather than exceptional. All the topics of this research report (historical notes, examples, abnormal extremals, Hamiltonians, nonholonomic distributions, sub-Riemannian distance, the relations between minimality and extremality, regular abnormal extremals, local optimality of regular abnormal extremals, etc.) are presented in a very clear and effective way.

On the Classification of $C^*$-algebras of Real Rank Zero: Inductive Limits of Matrix Algebras over Non-Hausdorff Graphs

On the Classification of $C^*$-algebras of Real Rank Zero: Inductive Limits of Matrix Algebras over Non-Hausdorff Graphs PDF Author: Hongbing Su
Publisher: American Mathematical Soc.
ISBN: 0821826077
Category : Mathematics
Languages : en
Pages : 98

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Book Description
In this paper a [italic capital]K-theoretic classification is given of the real rank zero [italic capital]C*-algebras that can be expressed as inductive limits of sequences of finite direct sums of matrix algebras over finite connected graphs (possibly with multiple vertices). The special case that the graphs are circles is due to Elliott.

Factorizing the Classical Inequalities

Factorizing the Classical Inequalities PDF Author: Grahame Bennett
Publisher: American Mathematical Soc.
ISBN: 0821804367
Category : Mathematics
Languages : en
Pages : 145

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Book Description
This memoir describes a new way of looking at the classical inequalities. The most famous such results, (those of Hilbert, Hardy, and Copson) may be interpreted as inclusion relationships, l[superscript italic]p [subset equality symbol] [italic capital]Y, between certain (Banach) sequence spaces, the norm of the injection being the best constant of the particular inequality. The inequalities of Hilbert, Hardy, and Copson all share the same space [italic capital]Y. That space -- alias [italic]ces([italic]p) -- is central to many celebrated inequalities, and thus is studied here in considerable detail.