Pencils on Algebraic Surfaces with Prescribed Classes of Irreducible Components

Explore a refined approach to bounding reducible fibers in curve pencils on smooth projective surfaces in this 59-minute lecture by Anatoly Libgober from the University of Illinois. Delve into a substantial generalization of previous work on free quotients of fundamental groups in line arrangement complements. Examine concepts such as exceptional components, primitive generic types, shock rates, and degrees of freedom in pencils. Investigate the repackaging of the problem and various examples, culminating in a comprehensive analysis of all components. This joint work with J.I. Cogolludo offers valuable insights for researchers and students in algebraic geometry and related fields.

Intro
Motivations
Random Facts
Exceptional Components
Primitive Generic
Types of pencils
Shock rate
How many pencils
Degrees of freedom
Problem
Repackage
Examples
All Components