Upcoming Seminars

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Title: Infinite Sidon sets contained in sparse random sets of integers
Seminar: Algebra
Speaker: Sang June Lee of Duksung University, Seoul
Contact: TBA
Date: 2017-01-23 at 4:00PM
Venue: W303
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Abstract:
Title: Vector bundles and finite covers
Seminar: Algebra
Speaker: Anand Deopurkar of University of Georgia
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-01-31 at 4:00PM
Venue: W306
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Abstract:
Let Y be a variety. A finite cover $X \to Y$ of Y gives a natural vector bundle on Y, namely the direct image of the structure sheaf of X. Which vector bundles on Y arise in this way? I will present an answer to an asymptotic version of this question when Y is a curve, generalizing previous results of Ballico and Kanev, and answering a question of Lazarsfeld. This is joint work with Anand Patel.
Title: Privacy-Preserving Inference of Social Relationships from Location Data
Seminar: Computer Science
Speaker: Cyrus Shahabi of University of Southern California
Contact: Professor Li Xiong, lxiong@emory.edu
Date: 2017-02-03 at 4:00PM
Venue: W301
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Abstract:
For decades, social scientists have been studying people
Title: Torsion subgroups of elliptic curves over quintic and sextic number fields
Seminar: Algebra
Speaker: Maarten Derickx of University of Bayreuth
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-02-09 at 4:00PM
Venue: W306
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Abstract:
The determination of which finite abelian groups can occur as the torsion subgroup of an elliptic curve over a number field has a long history starting with Barry Mazur who proved that there are exactly 15 groups that can occur as the torsion subgroup of an elliptic curve over the rational numbers. It is a theorem due to Lo
Title: TBD
Seminar: Algebra
Speaker: Natalie Hobson of University of Georgia
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-02-14 at 4:00PM
Venue: W306
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Abstract:
Title: TBA
Seminar: Algebra
Speaker: Andrew Obus of University of Virginia
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-02-21 at 4:00PM
Venue: W306
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Abstract:
Title: TBA
Seminar: Algebra
Speaker: Krishna Alladi of University of Florida
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-02-28 at 4:00PM
Venue: W306
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Abstract:
Title: Finite index for arboreal Galois representations
Seminar: Algebra
Speaker: Andrew Bridy of Texas A and M
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-03-28 at 4:00PM
Venue: W306
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Abstract:
Let K be a global field of characteristic 0, let f in $K(x)$ and b in K, and set $K_n := K(f^{-n}(b))$. The projective limit of the groups $Gal(K_n/K)$ embeds in the automorphism group of an infinite rooted tree. A difficult problem is to find criteria that guarantee the index is finite; a complete answer would give a dynamical analogue of Serre's famous open image theorem. When f is a cubic polynomial over a function field, I prove a set of necessary and sufficient conditions for finite index (for number fields, the proof is conditional on Vojta's conjecture). This is joint work with Tom Tucker.
Title: Automorphisms of cubic surfaces in arbitrary characteristic
Seminar: Algebra
Speaker: Alexander Duncan of University of South Carolina
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-04-04 at 4:00PM
Venue: W306
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Abstract:
Title: TBA
Seminar: Algebra
Speaker: Cyrus Hettle of Univeristy of Kentucky
Contact: David Zureick-Brown, dzb@mathcs.emory.edu
Date: 2017-04-18 at 4:00PM
Venue: W306
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Abstract: