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, May. 2 11:15am (MATH …
Luca Schaffler (Universita Roma Tre)
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Given the moduli space of hyperplanes in projective space, V. Alexeev constructed a family of compactifications parametrizing stable hyperplane arrangements with respect to given weights. In particular, there is a toric compactification that generalizes the Losev–Manin compactification for the moduli of points on the line. We study the first natural wall crossing that modifies this compactification into a non-toric one by varying the weights. In particular, we prove that in dimensions two the wall crossing corresponds to blowing up at the identity of the dense torus of the generalized Losev–Manin space. As an application, we show that any Q-factorialization of this blow-up is not a Mori dream space for a sufficiently high number of lines. This is joint work in progress with Patricio Gallardo.
An explicit wall crossing for the moduli space of hyperplane arrangements Sponsored by the Meyer Fund
I will describe some connections between arithmetic of abelian varieties, non-archimedean/tropical geometry, and combinatorics. For example, we give formulas for (non-archimedean) canonical local heights in terms of tropical geometry. Our formulas extend classical computations of local height functions due to Néron (involving Néron models) and, in the case of elliptic curves, due to Tate (involving Bernoulli polynomials).
Based on joint work with Robin de Jong.
Canonical local heights and tropical theta functions Sponsored by the Simons Foundation