Twenty-Four Hours of Local Cohomology (Graduate Studies in Mathematics) (Graduate Studies in Mathematics)

this Book Is Aimed To Provide An Introduction To Local Cohomology Which Takes Cognizance Of The Breadth Of Its Interactions With Other Areas Of Mathematics. It Covers Topics Such As The Number Of Defining Equations Of Algebraic Sets, Connectedness Properties Of Algebraic Sets, Connections To Sheaf Cohomology And To De Rham Cohomology, Grobner Bases In The Commutative Setting As Well As For $d$-modules, The Frobenius Morphism And Characteristic $p$ Methods, Finiteness Properties Of Local Cohomology Modules, Semigroup Rings And Polyhedral Geometry, And Hypergeometric Systems Arising From Semigroups. The Book Begins With Basic Notions In Geometry, Sheaf Theory, And Homological Algebra Leading To The Definition And Basic Properties Of Local Cohomology. Then It Develops The Theory In A Number Of Different Directions, And Draws Connections With Topology, Geometry, Combinatorics, And Algorithmic Aspects Of The Subject. "This book is aimed to provide an introduction to local cohomology which takes cognizance of the breadth of its interactions with other areas of mathematics. It covers topics such as the number of defining equations of algebraic sets, connectedness properties of algebraic sets, connections to sheaf cohomology and to de Rham cohomology, Grobner bases in the commutative setting as well as for D-modules, the Frobenius morphism and characteristic p methods, finiteness properties of local cohomology modules, semigroup rings and polyhedral geometry, and hypergeometric systems arising from semigroups." "The book begins with basic notions in geometry, sheaf theory, and homological algebra leading to the definition and basic properties of local cohomology. Then it develops the theory in a number of different directions, and draws connections with topology, geometry, combinatorics, and algorithmic aspects of the subject."--Jacket. This book is aimed to provide an introduction to local cohomology which takes cognizance of the breadth of its interactions with other areas of mathematics. It covers topics such as the number of defining equations of algebraic sets, connectedness properties of algebraic sets, connections to sheaf cohomology and to de Rham cohomology, Gröbner bases in the commutative setting as well as for $D$-modules, the Frobenius morphism and characteristic $p$ methods, finiteness properties of local cohomology modules, semigroup rings and polyhedral geometry, and hypergeometric systems arising from semigroups. The book begins with basic notions in geometry, sheaf theory, and homological algebra leading to the definition and basic properties of local cohomology. Then it develops the theory in a number of different directions, and draws connections with topology, geometry, combinatorics, and algorithmic aspects of the subject. This is an introduction to local cohomology which takes cognizance of the breadth of its interactions with other areas of mathematics. The text covers topics such as the number of defining equations of algebraic sets, connectedness properties of algebraic sets, and connections to sheaf cohomology and to de Rham cohomology Aimed to provide an introduction to local cohomology, this book takes cognizance of the breadth of its interactions with other areas of mathematics. It begins with basic notions in geometry, sheaf theory, and homological algebra leading to the definition and basic properties of local cohomology.