September 16, 2014
3:00PM - 4:00PM
MW 154
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2014-09-16 15:00:00
2014-09-16 16:00:00
Algebraic Geometry Seminar - Maksym Fedorchuk
Title: A Semi-Ampleness Criterion for Divisors on the Moduli Space of Stable Pointed Rational CurvesSpeaker: Maksym Fedorchuk, Boston CollegeAbstract: We develop a new combinatorial approach to proving base point freeness of divisors on $\overline{M}_{0,n}$. On one hand, this leads to a simple sufficient criterion for an S_n-symmetric divisor to be semi-ample. On the other hand, we construct infinite series of semi-ample divisors associated to cyclic quadratic forms satisfying certain positivity properties.
MW 154
OSU ASC Drupal 8
ascwebservices@osu.edu
America/New_York
public
Date Range
Add to Calendar
2014-09-16 15:00:00
2014-09-16 16:00:00
Algebraic Geometry Seminar - Maksym Fedorchuk
Title: A Semi-Ampleness Criterion for Divisors on the Moduli Space of Stable Pointed Rational CurvesSpeaker: Maksym Fedorchuk, Boston CollegeAbstract: We develop a new combinatorial approach to proving base point freeness of divisors on $\overline{M}_{0,n}$. On one hand, this leads to a simple sufficient criterion for an S_n-symmetric divisor to be semi-ample. On the other hand, we construct infinite series of semi-ample divisors associated to cyclic quadratic forms satisfying certain positivity properties.
MW 154
Department of Mathematics
math@osu.edu
America/New_York
public
Title: A Semi-Ampleness Criterion for Divisors on the Moduli Space of Stable Pointed Rational Curves
Speaker: Maksym Fedorchuk, Boston College
Abstract: We develop a new combinatorial approach to proving base point freeness of divisors on $\overline{M}_{0,n}$. On one hand, this leads to a simple sufficient criterion for an S_n-symmetric divisor to be semi-ample. On the other hand, we construct infinite series of semi-ample divisors associated to cyclic quadratic forms satisfying certain positivity properties.
