Graduate Summer School on Combinatorial Algebraic Geometry
Description
Lecturers:
Renzo Cavalieri (Colorado State)
Milena Hering (Edinburgh)
June Huh (Princeton)
Lectures
Tautological Intersection theory on Moduli Spaces of pointed
rational curves by Renzo Cavalieri (Colorado State).
The goal of these lectures is to familiarize students with moduli spaces and illustrate how to study their geometry by studying the geometry of families of parameterized objects. We will use moduli spaces of rational pointed curves as our guiding examples. We will study several different modular compactifications of this moduli space, and their intersection theory. If time permits we will discuss the tropical counterparts of the spaces introduced and mention some natural correspondence theorems.
Toric Varieties: Positivity and Syzygies by Milena Hering (Edinburgh).
This lecture series is an introduction to toric varieties. We will cover affine toric varieties, toric varieties corresponding to a fan, toric varieties corresponding to a polytope, line bundles on toric varieties, positivity of toric line bundles (criteria for line bundles to be globally generated/nef/ample), and syzygies of embeddings of toric varieties.
Hard Lefschetz properties and Hodge-Riemann relations in geometry, algebra, and combinatorics by June Huh(Princeton).
We will give a broad overview of the Hard Lefschetz properties and the Hodge-Riemann relations in the theory of polytopes, complex manifolds, Coxeter groups, algebraic varieties and related objects. The Hard Lefschetz property and the Hodge-Riemann relations for matroid tropical varieties and their combinatorial applications will be explained in some detail (joint work with Karim Adiprasito and Eric Katz). In the other direction, we will explain how to produce interesting examples in algebraic geometry using tropical varieties that do not satisfy the Hodge-Riemann relations (joint work with Farhad Babaee). In both cases, a notion of convexity for tropical varieties will play an important role.
Schedule
08:45 to 09:15 |
Registration
|
09:15 to 09:30 |
Welcome and Introduction
|
09:30 to 10:20 |
Milena Hering, University of Edinburgh |
10:30 to 11:00 |
Coffee Break
|
11:00 to 11:50 |
Renzo Cavalieri, Colorado State University |
12:00 to 13:45 |
Lunch
|
14:00 to 14:50 |
June Huh, CMI, IAS, and Princeton University |
15:00 to 15:30 |
Coffee Break
|
15:30 to 17:30 |
Problem Session 1
|
17:30 to 20:30 |
Reception
|
09:00 to 10:15 |
Renzo Cavalieri, Colorado State University |
10:15 to 10:45 |
Coffee Break
|
10:45 to 12:00 |
Milena Hering, University of Edinburgh |
12:00 to 13:45 |
Lunch
|
14:00 to 16:30 |
Problem Session II
|
16:30 to 17:30 |
Professional Development Session
|
09:00 to 10:15 |
June Huh, CMI, IAS, and Princeton University |
10:15 to 10:45 |
Coffee Break
|
10:45 to 12:00 |
Renzo Cavalieri, Colorado State University |
12:00 to 13:45 |
Lunch
|
13:45 to 17:30 |
Excursion
|
09:00 to 10:15 |
June Huh, CMI, IAS, and Princeton University |
10:15 to 10:45 |
Coffee Break
|
10:45 to 12:00 |
Milena Hering, University of Edinburgh |
12:00 to 13:45 |
Lunch
|
14:00 to 17:30 |
Problem Session III
|
09:30 to 10:20 |
Renzo Cavalieri, Colorado State University |
10:30 to 11:00 |
Coffee Break
|
11:00 to 11:50 |
Milena Hering, University of Edinburgh |
12:00 to 13:45 |
Lunch
|
14:00 to 14:50 |
June Huh, CMI, IAS, and Princeton University |
15:00 to 15:30 |
Coffee Break
|
15:30 to 17:30 |
Problem Session IV
|