Characters and Cyclotomic Fields in Finite Geometry

Characters and Cyclotomic Fields in Finite Geometry PDF Author: Bernhard Schmidt
Publisher: Springer
ISBN: 3540457976
Category : Mathematics
Languages : en
Pages : 112

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Book Description
This monograph contributes to the existence theory of difference sets, cyclic irreducible codes and similar objects. The new method of field descent for cyclotomic integers of presribed absolute value is developed. Applications include the first substantial progress towards the Circulant Hadamard Matrix Conjecture and Ryser`s conjecture since decades. It is shown that there is no Barker sequence of length l with 13

Characters and Cyclotomic Fields in Finite Geometry

Characters and Cyclotomic Fields in Finite Geometry PDF Author: Bernhard Schmidt
Publisher: Springer
ISBN: 3540457976
Category : Mathematics
Languages : en
Pages : 112

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Book Description
This monograph contributes to the existence theory of difference sets, cyclic irreducible codes and similar objects. The new method of field descent for cyclotomic integers of presribed absolute value is developed. Applications include the first substantial progress towards the Circulant Hadamard Matrix Conjecture and Ryser`s conjecture since decades. It is shown that there is no Barker sequence of length l with 13

Finite Geometry and Character Theory

Finite Geometry and Character Theory PDF Author: Alexander Pott
Publisher: Springer
ISBN: 3540491821
Category : Mathematics
Languages : en
Pages : 185

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Book Description
Difference sets are of central interest in finite geometry and design theory. One of the main techniques to investigate abelian difference sets is a discrete version of the classical Fourier transform (i.e., character theory) in connection with algebraic number theory. This approach is described using only basic knowledge of algebra and algebraic number theory. It contains not only most of our present knowledge about abelian difference sets, but also gives applications of character theory to projective planes with quasiregular collineation groups. Therefore, the book is of interest both to geometers and mathematicians working on difference sets. Moreover, the Fourier transform is important in more applied branches of discrete mathematics such as coding theory and shift register sequences.

Axiom of Choice

Axiom of Choice PDF Author: Horst Herrlich
Publisher: Springer
ISBN: 3540342680
Category : Mathematics
Languages : en
Pages : 207

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Book Description
AC, the axiom of choice, because of its non-constructive character, is the most controversial mathematical axiom. It is shunned by some, used indiscriminately by others. This treatise shows paradigmatically that disasters happen without AC and they happen with AC. Illuminating examples are drawn from diverse areas of mathematics, particularly from general topology, but also from algebra, order theory, elementary analysis, measure theory, game theory, and graph theory.

Random Times and Enlargements of Filtrations in a Brownian Setting

Random Times and Enlargements of Filtrations in a Brownian Setting PDF Author: Roger Mansuy
Publisher: Springer Science & Business Media
ISBN: 3540294074
Category : Mathematics
Languages : en
Pages : 167

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Book Description
In November 2004, M. Yor and R. Mansuy jointly gave six lectures at Columbia University, New York. These notes follow the contents of that course, covering expansion of filtration formulae; BDG inequalities up to any random time; martingales that vanish on the zero set of Brownian motion; the Azéma-Emery martingales and chaos representation; the filtration of truncated Brownian motion; attempts to characterize the Brownian filtration. The book accordingly sets out to acquaint its readers with the theory and main examples of enlargements of filtrations, of either the initial or the progressive kind. It is accessible to researchers and graduate students working in stochastic calculus and excursion theory, and more broadly to mathematicians acquainted with the basics of Brownian motion.

Combinatorial Stochastic Processes

Combinatorial Stochastic Processes PDF Author: Jim Pitman
Publisher: Springer Science & Business Media
ISBN: 354030990X
Category : Mathematics
Languages : en
Pages : 257

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Book Description
The purpose of this text is to bring graduate students specializing in probability theory to current research topics at the interface of combinatorics and stochastic processes. There is particular focus on the theory of random combinatorial structures such as partitions, permutations, trees, forests, and mappings, and connections between the asymptotic theory of enumeration of such structures and the theory of stochastic processes like Brownian motion and Poisson processes.

Quantum Independent Increment Processes II

Quantum Independent Increment Processes II PDF Author: Ole E Barndorff-Nielsen
Publisher: Springer
ISBN: 3540323856
Category : Mathematics
Languages : en
Pages : 351

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Book Description
This is the second of two volumes containing the revised and completed notes of lectures given at the school "Quantum Independent Increment Processes: Structure and Applications to Physics". This school was held at the Alfried-Krupp-Wissenschaftskolleg in Greifswald in March, 2003, and supported by the Volkswagen Foundation. The school gave an introduction to current research on quantum independent increment processes aimed at graduate students and non-specialists working in classical and quantum probability, operator algebras, and mathematical physics. The present second volume contains the following lectures: "Random Walks on Finite Quantum Groups" by Uwe Franz and Rolf Gohm, "Quantum Markov Processes and Applications in Physics" by Burkhard Kümmerer, Classical and Free Infinite Divisibility and Lévy Processes" by Ole E. Barndorff-Nielsen, Steen Thorbjornsen, and "Lévy Processes on Quantum Groups and Dual Groups" by Uwe Franz.

Gröbner Bases and the Computation of Group Cohomology

Gröbner Bases and the Computation of Group Cohomology PDF Author: David J. Green
Publisher: Springer Science & Business Media
ISBN: 9783540203391
Category : Mathematics
Languages : en
Pages : 156

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Book Description
This monograph develops the Gröbner basis methods needed to perform efficient state of the art calculations in the cohomology of finite groups. Results obtained include the first counterexample to the conjecture that the ideal of essential classes squares to zero. The context is J. F. Carlson’s minimal resolutions approach to cohomology computations.

C^\infinity - Differentiable Spaces

C^\infinity - Differentiable Spaces PDF Author: Juan A. Navarro González
Publisher: Springer Science & Business Media
ISBN: 9783540200727
Category : Mathematics
Languages : en
Pages : 212

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Book Description
The volume develops the foundations of differential geometry so as to include finite-dimensional spaces with singularities and nilpotent functions, at the same level as is standard in the elementary theory of schemes and analytic spaces. The theory of differentiable spaces is developed to the point of providing a handy tool including arbitrary base changes (hence fibred products, intersections and fibres of morphisms), infinitesimal neighbourhoods, sheaves of relative differentials, quotients by actions of compact Lie groups and a theory of sheaves of Fréchet modules paralleling the useful theory of quasi-coherent sheaves on schemes. These notes fit naturally in the theory of C^\infinity-rings and C^\infinity-schemes, as well as in the framework of Spallek’s C^\infinity-standard differentiable spaces, and they require a certain familiarity with commutative algebra, sheaf theory, rings of differentiable functions and Fréchet spaces.

Representation Theory and Complex Analysis

Representation Theory and Complex Analysis PDF Author: Michael Cowling
Publisher: Springer Science & Business Media
ISBN: 3540768912
Category : Mathematics
Languages : en
Pages : 400

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Book Description
Six leading experts lecture on a wide spectrum of recent results on the subject of the title. They present a survey of various interactions between representation theory and harmonic analysis on semisimple groups and symmetric spaces, and recall the concept of amenability. They further illustrate how representation theory is related to quantum computing; and much more. Taken together, this volume provides both a solid reference and deep insights on current research activity.

Finite Geometry and Combinatorial Applications

Finite Geometry and Combinatorial Applications PDF Author: Simeon Ball
Publisher: Cambridge University Press
ISBN: 1107107997
Category : Mathematics
Languages : en
Pages : 299

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Book Description
A graduate-level introduction to finite geometry and its applications to other areas of combinatorics.