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Events for Algebraic Geometry Seminar

ICS calendar file for Algebraic Geometry

This file can be used to add scheduled events to your calendar, however every program is unique. Below you will find what information is available, but if nothing else works try creating a new calendar in your program and using

http://math.colorado.edu/seminars/ics/frag.ics

as the source.

Thunderbird

The Algebraic Geometry Seminar, AKA FRAGMENT, meets at Boulder on Thursdays 11:15 AM -- 12:15 PM in MATH 350 and at CSU on Thursdays 3 -- 5 PM in Weber 201. For more information, or to provide a speaker, please contact Renzo Cavalieri, Jonathan Wise, or Sebastian (Yano) Casalaina.

Thu, Oct. 30 5pm (CSU)	Multiple speakers X 3rd installment of Front Range Algebraic Geometry (FRAG) day happening at CSU in Weber 201 1:00-5:00 https://sites.google.com/colorado.edu/front-range-ag/home FRAG Day
Thu, Sep. 4 11:15am (MATH …	Jon Kim X In this talk, I will introduce the moduli space of K3 surfaces. I will start with some preliminaries on K3 surfaces from Hodge theory and move onto their moduli. Specifically, the goal will be to introduce the Bailey-Borel compactification of a certain ball quotient and its relationship to the moduli space of K3 surfaces. If there is time, I will discuss degenerations, Kulikov models (type III), and recent work by Alexeev and Engel (2023) on the KSBA compactification of the moduli of K3 surfaces. Moduli of K3 Surfaces
Thu, Sep. 11 11:15am (MATH …	Jon Kim X We will continue our talk from last week starting with analytic moduli and discussing the moduli space of M-quasipolarized and M-polarized K3 surfaces. If time permits, we will discuss one-parameter degenerations. These talks follow Alexeev and Engel's "Compact moduli of K3 surfaces" paper in 2023. Moduli of K3 Surfaces II
Thu, Sep. 18 11:15am (MATH …	Jon Kim X We continue the talk from last week, starting with quasipolarized and polarized K3 surfaces and their moduli spaces. Moduli of K3 Surfaces III
Thu, Sep. 25 11:15am (MATH …	Daniel Lyness X TBA TBA
Thu, Sep. 25 11:15am (MATH …	Daniel Lyness X Geometric Invariant Theory is concerned with answering the following problem: Given a group G acting on a projective variety X, how can we construct a quotient of X by the group action, and give it the structure of an algebraic variety? We cannot simply take the orbit space, and hope that this will be a variety, so it is important to throw out some bad (unstable) orbits from X, and identify some ok (semistable) orbits together in the quotient. In this talk, I will show how to construct this quotient abstractly, and introduce the remarkable Hilbert-Mumford numerical criterion, which allows us to determine which orbits in X are stable, semistable and unstable, and therefore what our quotient looks like geometrically. In part 2 next week, I will show how I am applying GIT to my research. Introduction to Geometric Invariant Theory part 1
Thu, Oct. 2 11:15am (MATH …	Daniel Lyness X In this talk we will be continuing where we left off last week, having just introduced the Hilbert-Mumford Numerical Criterion. Now we will see how to use this powerful computational tool to do GIT on the space of plane cubic curves. There will be lots of pictures! Then we’ll kick it up a notch to my research question: How to use GIT to find a moduli space for pairs (Q,C) of a conic and cubic plane curve, and how our moduli space will change depending on the ample line bundle used for our embedding in projective space. GIT on plane curves
Thu, Oct. 9 11:15am (MATH …	Matt Watson X TBA TBA
Thu, Oct. 16 11:15am (MATH …	Matt Watson X TBA TBA
Thu, Oct. 23 11:15am (MATH …	Yota Maeda (TU Darmstadt) X See https://sites.google.com/view/fragmentseminar/ On the Kodaira dimension of even-dimensional ball quotients Sponsored by the Meyer Fund
Thu, Nov. 6 11:15am (MATH …	Lisa Marquand (NYU) TBD Sponsored by the Meyer Fund
Wed, Nov. 12 4:30pm (TBD)	Zhijia Zhang (NYU) X TBD TBD - Note the unusual time and date Sponsored by the Meyer Fund

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Events for Algebraic Geometry Seminar