What is a perverse sheaf?
Mark Andrea de Cataldo, Luca Migliorini
TL;DR
This paper introduces the concept of perverse sheaves, explaining their mathematical significance and foundational properties in algebraic geometry and topology.
Contribution
It provides an accessible overview of perverse sheaves, clarifying their definition and importance for researchers and students.
Findings
Perverse sheaves generalize traditional sheaf theory.
They play a key role in intersection cohomology.
The article clarifies foundational aspects of perverse sheaves.
Abstract
Three-page article on the notion of perverse sheaf to appear in the "What is?" series in the Notices of the AMS.
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Taxonomy
TopicsHistory and Theory of Mathematics · Mathematics and Applications · Algebraic Geometry and Number Theory