We're sorry but this page doesn't work properly without JavaScript enabled. Please enable it to continue.
Feedback

4/4 Singular support of coherent sheaves

Formal Metadata

Title
4/4 Singular support of coherent sheaves
Title of Series
Part Number
04
Number of Parts
4
Author
License
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers
Publisher
Release Date2015
LanguageEnglish

Content Metadata

Subject Area
Genre
Abstract
Singular support is an invariant that can be attached to a coherent sheaf on a derived scheme which is quasi-smooth (a.k.a. derived locally complete intersection). This invariant measures how far a given coherent sheaf is from being perfect. We will explain how the subtle difference between "coherent" and "perfect" is responsible for the appearance of Arthur parameters in the context of geometric Langlands correspondence.