Kategoria BISAC: Mathematics >> Algebra - General

Les equations polynomiales apparaissent dans de nombreux domaines, pour modeliser des contraintes geometriques, des relations entre des grandeurs physiques, ou encore des proprietes satisfaites par certaines inconnues. Cet ouvrage est une introduction aux methodes algebriques permettant de resoudre ce type d'equations. Nous montrons comment la geometrie des varietes algebriques definies par ces equations, leur dimension, leur degre, ou leurs composantes peuvent se deduire des proprietes des algebres quotients correspondantes. Nous abordons pour cela des methodes de la geometrie algebrique...

The author explores evolution algebras, which lie between algebras and dynamical systems. Readers learn the foundations of evolution algebras theory and its applications in non-Mendelian genetics and Markov chains. They'll also discover evolution algebras' connections with other mathematical fields, including graph theory, group theory, stochastic processes, dynamical systems, knot theory, 3-manifolds, and the Ihara-Selberg zeta function.

Interest in commutative algebra has surged over the past decades. In order to survey and highlight recent developments in this rapidly expanding field, the Centre de Recerca Matematica in Bellaterra organized a ten-days Summer School on Commutative Algebra in 1996. Lectures were presented by six high-level specialists, L. Avramov (Purdue), M.K. Green (UCLA), C. Huneke (Purdue), P. Schenzel (Halle), G. Valla (Genova) and W.V. Vasconcelos (Rutgers), providing a fresh and extensive account of the results, techniques and problems of some of the most active areas of research. The present volume...

A 30-article volume, introducing an active and attractive part of algebra that has gained much from its position at the crossroads of mathematics over the years. The papers stimulate the reader to consider and actively investigate the topics and problems they contain.

In a nutshell, the book deals with direct decompositions of modules and associated concepts. The central notion of "partially invertible homomorphisms, namely those that are factors of a non-zero idempotent, is introduced in a very accessible fashion. Units and regular elements are partially invertible. The "total consists of all elements that are not partially invertible. The total contains the radical and the singular and cosingular submodules, but while the total is closed under right and left multiplication, it may not be closed under addition. Cases are discussed where the total is...

Haim Brezis has made significant contributions in the fields of partial differential equations and functional analysis, and this volume collects contributions by his former students and collaborators in honor of his 60^th anniversary at a conference in Gaeta. It presents new developments in the theory of partial differential equations with emphasis on elliptic and parabolic problems.

Extending modules are generalizations of injective modules and, dually, lifting modules generalize projective supplemented modules. There is a certain asymmetry in this duality. While the theory of extending modules is well documented in monographs and text books, the purpose of our monograph is to provide a thorough study of supplements and projectivity conditions needed to investigate classes of modules related to lifting modules.

The text begins with an introduction to small submodules, the radical, variations on projectivity, and hollow dimension. The subsequent chapters...

This book highlights important developments on artinian modules over group rings of generalized nilpotent groups. Along with traditional topics such as direct decompositions of artinian modules, criteria of complementability for some important modules, and criteria of semisimplicity of artinian modules, it also focuses on recent advanced results on these matters.

The use of Clifford algebras in mathematical physics and engineering has grown rapidly in recent years. Whereas other developments have privileged a geometric approach, this book uses an algebraic approach that can be introduced as a tensor product of quaternion algebras and provides a unified calculus for much of physics. It proposes a pedagogical introduction to this new calculus, based on quaternions, with applications mainly in special relativity, classical electromagnetism, and general relativity.

L'algebra e nata come lo studio della risolubilita delle equazioni polinomiali e tale e essenzialmente rimasta fino a quando nel 1830 Evariste Galois - matematico geniale dalla vita breve e avventurosa - ha definitivamente risolto questo problema, ponendo allo stesso tempo le basi per la nascita dell'algebra moderna intesa come lo studio delle strutture algebriche. La Teoria di Galois classica viene oggi insegnata a vari livelli nell'ambito dei Corsi di Laurea in Matematica. Questo libro di testo e stato di conseguenza scritto per essere usato in modo flessibile. Alcune parti -come quella...