Multiplicative Invariants of Root Lattices

Multiplicative Invariants of Root Lattices PDF Author: Jessica Ann Hamm
Publisher:
ISBN:
Category :
Languages : en
Pages : 86

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Book Description
Classical invariant theory is a field of study within abstract algebra that has been around for well over a century. However, the field of multiplicative invariant theory is rather new, having only been studied formally for the past 35 years. Multiplicative invariants arise naturally in a variety of settings, notably as representation rings of Lie algebras, centers of group algebras, and actions on algebraic tori. In this thesis we calculate the multiplicative invariants for lattices associated to root systems under the actions of their Weyl groups.

Multiplicative Invariants of Root Lattices

Multiplicative Invariants of Root Lattices PDF Author: Jessica Ann Hamm
Publisher:
ISBN:
Category :
Languages : en
Pages : 86

Get Book Here

Book Description
Classical invariant theory is a field of study within abstract algebra that has been around for well over a century. However, the field of multiplicative invariant theory is rather new, having only been studied formally for the past 35 years. Multiplicative invariants arise naturally in a variety of settings, notably as representation rings of Lie algebras, centers of group algebras, and actions on algebraic tori. In this thesis we calculate the multiplicative invariants for lattices associated to root systems under the actions of their Weyl groups.

Multiplicative Invariant Theory

Multiplicative Invariant Theory PDF Author: Martin Lorenz
Publisher: Springer
ISBN: 9783540806851
Category : Mathematics
Languages : en
Pages : 180

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Book Description
Multiplicative invariant theory, as a research area in its own right within the wider spectrum of invariant theory, is of relatively recent vintage. The present text offers a coherent account of the basic results achieved thus far.. Multiplicative invariant theory is intimately tied to integral representations of finite groups. Therefore, the field has a predominantly discrete, algebraic flavor. Geometry, specifically the theory of algebraic groups, enters through Weyl groups and their root lattices as well as via character lattices of algebraic tori. Throughout the text, numerous explicit examples of multiplicative invariant algebras and fields are presented, including the complete list of all multiplicative invariant algebras for lattices of rank 2. The book is intended for graduate and postgraduate students as well as researchers in integral representation theory, commutative algebra and, mostly, invariant theory.

Multiplicative Invariant Theory

Multiplicative Invariant Theory PDF Author: Martin Lorenz
Publisher: Springer Science & Business Media
ISBN: 3540273581
Category : Mathematics
Languages : en
Pages : 179

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Book Description
Multiplicative invariant theory, as a research area in its own right within the wider spectrum of invariant theory, is of relatively recent vintage. The present text offers a coherent account of the basic results achieved thus far.. Multiplicative invariant theory is intimately tied to integral representations of finite groups. Therefore, the field has a predominantly discrete, algebraic flavor. Geometry, specifically the theory of algebraic groups, enters through Weyl groups and their root lattices as well as via character lattices of algebraic tori. Throughout the text, numerous explicit examples of multiplicative invariant algebras and fields are presented, including the complete list of all multiplicative invariant algebras for lattices of rank 2. The book is intended for graduate and postgraduate students as well as researchers in integral representation theory, commutative algebra and, mostly, invariant theory.

Orthogonal Decompositions and Integral Lattices

Orthogonal Decompositions and Integral Lattices PDF Author: Alexei Kostrikin
Publisher: Walter de Gruyter
ISBN: 3110901757
Category : Mathematics
Languages : en
Pages : 549

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Book Description
The aim of the series is to present new and important developments in pure and applied mathematics. Well established in the community over two decades, it offers a large library of mathematics including several important classics. The volumes supply thorough and detailed expositions of the methods and ideas essential to the topics in question. In addition, they convey their relationships to other parts of mathematics. The series is addressed to advanced readers wishing to thoroughly study the topic. Editorial Board Lev Birbrair, Universidade Federal do Ceará, Fortaleza, Brasil Victor P. Maslov, Russian Academy of Sciences, Moscow, Russia Walter D. Neumann, Columbia University, New York, USA Markus J. Pflaum, University of Colorado, Boulder, USA Dierk Schleicher, Jacobs University, Bremen, Germany

Invariant Differential Operators for Quantum Symmetric Spaces

Invariant Differential Operators for Quantum Symmetric Spaces PDF Author: Gail Letzter
Publisher: American Mathematical Soc.
ISBN: 0821841319
Category : Mathematics
Languages : en
Pages : 104

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Book Description
This paper studies quantum invariant differential operators for quantum symmetric spaces in the maximally split case. The main results are quantum versions of theorems of Harish-Chandra and Helgason: There is a Harish-Chandra map which induces an isomorphism between the ring of quantum invariant differential operators and the ring of invariants of a certain Laurent polynomial ring under an action of the restricted Weyl group. Moreover, the image of the center under this map is the entire invariant ring if and only if the underlying irreducible symmetric pair is not of four exceptional types. In the process, the author finds a particularly nice basis for the quantum invariant differential operators that provides a new interpretation of difference operators associated to Macdonald polynomials.

Reflection Groups and Invariant Theory

Reflection Groups and Invariant Theory PDF Author: Richard Kane
Publisher: Springer Science & Business Media
ISBN: 1475735421
Category : Mathematics
Languages : en
Pages : 382

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Book Description
Reflection groups and invariant theory is a branch of mathematics that lies at the intersection between geometry and algebra. The book contains a deep and elegant theory, evolved from various graduate courses given by the author over the past 10 years.

Multiplicative Invariant Fields of Dimension $leq 6$

Multiplicative Invariant Fields of Dimension $leq 6$ PDF Author: Akinari Hoshi
Publisher: American Mathematical Society
ISBN: 147046022X
Category : Mathematics
Languages : en
Pages : 150

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Book Description
View the abstract.

Mordell–Weil Lattices

Mordell–Weil Lattices PDF Author: Matthias Schütt
Publisher: Springer Nature
ISBN: 9813293012
Category : Mathematics
Languages : en
Pages : 431

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Book Description
This book lays out the theory of Mordell–Weil lattices, a very powerful and influential tool at the crossroads of algebraic geometry and number theory, which offers many fruitful connections to other areas of mathematics. The book presents all the ingredients entering into the theory of Mordell–Weil lattices in detail, notably, relevant portions of lattice theory, elliptic curves, and algebraic surfaces. After defining Mordell–Weil lattices, the authors provide several applications in depth. They start with the classification of rational elliptic surfaces. Then a useful connection with Galois representations is discussed. By developing the notion of excellent families, the authors are able to design many Galois representations with given Galois groups such as the Weyl groups of E6, E7 and E8. They also explain a connection to the classical topic of the 27 lines on a cubic surface. Two chapters deal with elliptic K3 surfaces, a pulsating area of recent research activity which highlights many central properties of Mordell–Weil lattices. Finally, the book turns to the rank problem—one of the key motivations for the introduction of Mordell–Weil lattices. The authors present the state of the art of the rank problem for elliptic curves both over Q and over C(t) and work out applications to the sphere packing problem. Throughout, the book includes many instructive examples illustrating the theory.

A Tour of Representation Theory

A Tour of Representation Theory PDF Author: Martin Lorenz
Publisher: American Mathematical Soc.
ISBN: 1470436809
Category : Mathematics
Languages : en
Pages : 674

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Book Description
Offers an introduction to four different flavours of representation theory: representations of algebras, groups, Lie algebras, and Hopf algebras. A separate part of the book is devoted to each of these areas and they are all treated in sufficient depth to enable the reader to pursue research in representation theory.

Elliptic Curves

Elliptic Curves PDF Author: Lawrence C. Washington
Publisher: CRC Press
ISBN: 9780203484029
Category : Computers
Languages : en
Pages : 446

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Book Description
Elliptic curves have played an increasingly important role in number theory and related fields over the last several decades, most notably in areas such as cryptography, factorization, and the proof of Fermat's Last Theorem. However, most books on the subject assume a rather high level of mathematical sophistication, and few are truly accessible to