Cancellation for surfaces revisited

Cancellation for surfaces revisited
Author: H. Flenner
Publisher: American Mathematical Society
Total Pages: 124
Release: 2022-07-18
Genre: Mathematics
ISBN: 1470453738


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Cancellation for Surfaces Revisited

Cancellation for Surfaces Revisited
Author: H. FLENNER; S. KALIMAN; M. ZAIDENBERG.
Publisher:
Total Pages: 0
Release: 2022
Genre: Cancellation theory (Group theory)
ISBN: 9781470471712


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Planar Algebras in Braided Tensor Categories

Planar Algebras in Braided Tensor Categories
Author: André Gil Henriques
Publisher: American Mathematical Society
Total Pages: 100
Release: 2023-02-13
Genre: Mathematics
ISBN: 1470455404


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Twenty-Four Hours of Local Cohomology

Twenty-Four Hours of Local Cohomology
Author: Srikanth B. Iyengar
Publisher: American Mathematical Society
Total Pages: 108
Release: 2022-07-19
Genre: Mathematics
ISBN: 1470471590


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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.