Characteristic cycle and wild Lefschetz theorems
Abstract
Abstract By relying on a new approach to Lefschetz type questions based on Beilinson’s singular support and Saito’s characteristic cycle, we prove an instance of the wild Lefschetz theorem envisioned by Deligne. Our main tool are new finiteness results for the characteristic cycles of perverse sheaves.
Fields of Study & Subjects
Algebraic Geometry and Number Theory
Advanced Combinatorial Mathematics
Commutative Algebra and Its Applications
Publication details
- Journal / source
- Journal für die reine und angewandte Mathematik (Crelles Journal)
- Publisher
- Walter de Gruyter GmbH
- Publication date
- 22 September 2026
- Language
- EN