Siegfried Bosch – författare

Galois.The study of algebraic equations has served as a motivating terrain for a large part of abstract algebra, and according to this, algebraic equations are visible as a guiding thread throughout the book.

Algebraic Geometry is a fascinating branch of Mathematics that combines methods from both Algebra and Geometry.

The aim of this work is to offer a concise and self-contained 'lecture-style' introduction to the theory of classical rigid geometry established by John Tate, together with the formal algebraic geometry approach launched by Michel Raynaud. These Lectures are now viewed commonly as an ideal means of learning advanced rigid geometry, regardless of the reader's level of background. Despite its parsimonious style, the presentation illustrates a number of key facts even more extensively than any other previous work.This Lecture Notes Volume is a revised and slightly expanded version of a preprint that appeared in 2005 at the University of Münster's Collaborative Research Center "Geometrical Structures in Mathematics".

Neron models were invented by A. Neron in the early 1960s in order to study the integral structure of abelian varieties over number fields. Since then, arithmeticians and algebraic geometers have applied the theory of Neron models with success. Recently, developments in arithmetic algebraic geometry have prompted a desire to understand more about Neron models, and even to go back to the basics of their construction. The authors have taken this as their incentive to present a comprehensive treatment of Neron models. This volume of the "Ergebnisse" series provides a detailed demonstration of the construction of Neron models from the point of view of Grothendieck's algebraic geometry. In the second part of the book the relationship between Neron models and the relative Picard functor in the case of Jacobian varieties is explained. The authors remind the reader of some important standard techniques of algebraic geometry. A special chapter surveys the theory of the Picard functor.

The International Conference on p-adic Analysis is usually held every 3-4 years with the purpose of exchanging information at research level on new trends in the subject and of reporting on progress in central problems. This particular conference, held in Trento, Italy in May 1989, was dedicated to the memory of Philippe Robba, his important contributions to p-adic analysis and especially to the theory of p-adic differential equations. The conference was characterized by the discussion of numerous algebraic geometries. Rigid cohomology, D-modules and the action of Frobenius on the cohomology of curves and abelian varieties were the central themes of several contributions. A number of talks were devoted to exponential sums, a theme connecting p-adic analysis, algebraic geometry and number theory. Other themes were p-adic moduli spaces, non-Archimedean functional analysis, Barsotti-Tate groups and Drinfeld modules.

Néron models were invented by A. Néron in the early 1960s in order to study the integral structure of abelian varieties over number fields. Since then, arithmeticians and algebraic geometers have applied the theory of Néron models with great success. Quite recently, new developments in arithmetic algebraic geometry have prompted a desire to understand more about Néron models, and even to go back to the basics of their construction. The authors have taken this as their incentive to present a comprehensive treatment of Néron models. This volume of the renowned "Ergebnisse" series provides a detailed demonstration of the construction of Néron models from the point of view of Grothendieck's algebraic geometry. In the second part of the book the relationship between Néron models and the relative Picard functor in the case of Jacobian varieties is explained. The authors helpfully remind the reader of some important standard techniques of algebraic geometry. A special chapter surveys the theory of the Picard functor.

Techniken der Linearen Algebra spielen heute in nahezu allen Gebieten der aktuellen Mathematik eine wichtige Rolle. Demgemäß hat sich die Lineare Algebra zu Recht zu einer der tragenden Säulen mathematischer Studien an Universitäten entwickelt. Dieses bewährte Lehrbuch, das nun in einer überarbeiteten sechsten Auflage vorliegt, repräsentiert in idealer Weise das Pensum einer zweisemestrigen Anfängervorlesung über Lineare Algebra, in deren Zentrum Vektorräume, lineare Abbildungen und Matrizen stehen. Behandelt werden insbesondere lineare Gleichungssysteme und deren Lösung mittels des Gaußschen Eliminationsverfahrens, weiter die Eigen- und Normalformentheorie für lineare Selbstabbildungen von Vektorräumen, sowie Skalarprodukte im Rahmen euklidischer und unitärer Vektorräume, einschließlich der Hauptachsentransformation und des Sylvesterschen Trägheitssatzes. Als Besonderheit wurde die Elementarteilertheorie mit aufgenommen, welche eine sehr effektive Handhabung und explizite Bestimmung von Normalformen quadratischer Matrizen gestattet.In seiner textlichen Darstellung verfolgt das Buch mehrere Zielsetzungen zugleich. Zunächst liefert es eine klare, systematische und mathematisch strenge, aber dennoch behutsame Entwicklung der Linearen Algebra und ihrer Resultate, zusammen mit den üblichen theoretischen Begriffsbildungen, die diese Theorie so universell einsatzfähig machen. Sodann findet sich zu Beginn eines jeden Kapitels ein informeller Abschnitt mit dem Titel Überblick und Hintergrund als Motivation, der auch die geometrische Anschauung mit einbezieht, wenn immer dies möglich ist. Wie gewohnt enthält das Buch zu jeder thematischen Einheit eine Auswahl an speziell abgestimmten Übungsaufgaben. Zudem wird im Anhang ein neuartiger Aufgabentrainer vorgestellt, der das Bearbeiten der Aufgaben erleichtert und systematisiert. An einer größeren Anzahl von Beispielen wird demonstriert, wie man mittels Aufgabentrainer zu optimalen Lösungen gelangt. Damit eignet sich das Werk bestens zur Prüfungsvorbereitung und zum Selbststudium.