Listing 1 - 9 of 9 |
Sort by
|
Choose an application
Grothendieck's duality theory for coherent cohomology is a fundamental tool in algebraic geometry and number theory, in areas ranging from the moduli of curves to the arithmetic theory of modular forms. Presented is a systematic overview of the entire theory, including many basic definitions and a detailed study of duality on curves, dualizing sheaves, and Grothendieck's residue symbol. Along the way proofs are given of some widely used foundational results which are not proven in existing treatments of the subject, such as the general base change compatibility of the trace map for proper Cohen-Macaulay morphisms (e.g., semistable curves). This should be of interest to mathematicians who have some familiarity with Grothendieck's work and wish to understand the details of this theory.
Duality theory (Mathematics) --- Schemes (Algebraic geometry) --- Dualiteit [Theorie van de ] (Wiskunde) --- Dualité [Théorie de la ] (Mathématiques) --- Mathematics duality theory --- Schema's (Algebraïsche meetkunde) --- Schémas (Géometrie algébrique) --- Theorie van de dualiteit (Wiskunde) --- Théorie de la dualité (Mathématiques) --- Ordered algebraic structures --- Algebraic geometry. --- Number theory. --- Algebraic Geometry. --- Number Theory. --- Number study --- Numbers, Theory of --- Algebra --- Algebraic geometry --- Geometry
Choose an application
In the earlier monograph Pseudo-reductive Groups, Brian Conrad, Ofer Gabber, and Gopal Prasad explored the general structure of pseudo-reductive groups. In this new book, Classification of Pseudo-reductive Groups, Conrad and Prasad go further to study the classification over an arbitrary field. An isomorphism theorem proved here determines the automorphism schemes of these groups. The book also gives a Tits-Witt type classification of isotropic groups and displays a cohomological obstruction to the existence of pseudo-split forms. Constructions based on regular degenerate quadratic forms and new techniques with central extensions provide insight into new phenomena in characteristic 2, which also leads to simplifications of the earlier work. A generalized standard construction is shown to account for all possibilities up to mild central extensions. The results and methods developed in Classification of Pseudo-reductive Groups will interest mathematicians and graduate students who work with algebraic groups in number theory and algebraic geometry in positive characteristic.
Linear algebraic groups. --- Group theory. --- Geometry, Algebraic. --- Algebraic geometry --- Geometry --- Groups, Theory of --- Substitutions (Mathematics) --- Algebra --- Algebraic groups, Linear --- Geometry, Algebraic --- Group theory --- Algebraic varieties --- "ient homomorphism. --- Cartan k-subgroup. --- Dynkin diagram. --- Isogeny Theorem. --- Isomorphism Theorem. --- Levi subgroup. --- SeveriЂrauer variety. --- Tits classification. --- Tits-style classification. --- Weil restriction. --- algebraic geometry. --- automorphism functor. --- automorphism scheme. --- automorphism. --- canonical central extensions. --- central "ient. --- central extension. --- characteristic 2. --- conformal isometry. --- degenerate quadratic form. --- double bond. --- exotic construction. --- field-theoretic invariant. --- generalized exotic group. --- generalized standard group. --- generalized standard presentation. --- generalized standard. --- isomorphism class. --- isomorphism. --- isotropic group. --- k-tame central extension. --- linear isomorphism. --- linear-algebraic invariant. --- maximal torus. --- minimal type. --- non-reduced root system. --- number theory. --- pseudo-isogeny. --- pseudo-reductive group. --- pseudo-semisimple group. --- pseudo-simple group. --- pseudo-simple k-group. --- pseudo-split form. --- pseudo-split. --- quadratic space. --- quadrics. --- rank-1. --- rank-2. --- rigidity property. --- root field. --- root system. --- scheme-theoretic center. --- semisimple "ient. --- semisimple k-group. --- structure theorem.
Choose an application
Linear algebraic groups. --- Group theory. --- Geometry, Algebraic.
Choose an application
Choose an application
Choose an application
Pseudo-reductive groups arise naturally in the study of general smooth linear algebraic groups over non-perfect fields and have many important applications. This self-contained monograph provides a comprehensive treatment of the theory of pseudo-reductive groups and gives their classification in a usable form. The authors present numerous new results and also give a complete exposition of Tits' structure theory of unipotent groups. They prove the conjugacy results (conjugacy of maximal split tori, minimal pseudo-parabolic subgroups, maximal split unipotent subgroups) announced by Armand Borel and Jacques Tits, and also give the Bruhat decomposition, of general smooth connected algebraic groups. Researchers and graduate students working in any related area, such as algebraic geometry, algebraic group theory, or number theory, will value this book as it develops tools likely to be used in tackling other problems.
Linear algebraic groups. --- Group theory. --- 512.74 --- Groups, Theory of --- Substitutions (Mathematics) --- Algebra --- Algebraic groups, Linear --- Geometry, Algebraic --- Group theory --- Algebraic varieties --- Algebraic groups. Abelian varieties --- 512.74 Algebraic groups. Abelian varieties --- Linear algebraic groups
Choose an application
Pseudo-reductive groups arise naturally in the study of general smooth linear algebraic groups over non-perfect fields and have many important applications. This monograph provides a comprehensive treatment of the theory of pseudo-reductive groups and gives their classification in a usable form. In this second edition there is new material on relative root systems and Tits systems for general smooth affine groups, including the extension to quasi-reductive groups of famous simplicity results of Tits in the semisimple case. Chapter 9 has been completely rewritten to describe and classify pseudo-split absolutely pseudo-simple groups with a non-reduced root system over arbitrary fields of characteristic 2 via the useful new notion of 'minimal type' for pseudo-reductive groups. Researchers and graduate students working in related areas, such as algebraic geometry, algebraic group theory, or number theory will value this book, as it develops tools likely to be used in tackling other problems.
Group theory. --- Linear algebraic groups. --- Mathematics. --- Linear algebraic groups --- Group theory --- Mathematics --- Physical Sciences & Mathematics --- Algebra --- Groups, Theory of --- Substitutions (Mathematics) --- Algebraic groups, Linear --- Geometry, Algebraic --- Algebraic varieties
Choose an application
Choose an application
Arithmetical algebraic geometry --- Geometry, Algebraic --- p-adic analysis
Listing 1 - 9 of 9 |
Sort by
|