Upcoming seminars

Upcoming Seminars
(in 2 days)
Defense: Dissertation
Title to be announced
Luca Bonomi, Emory University
Contact: Luca Bonomi, lbonomi@emory.edu
Venue: Mathematics and Science Center, Room W301
(in 49 days)
Colloquium: Department
Tiling with Arbitrary Tiles
Imre Leader, The University of Cambridge
Contact: Dwight Duffus, Dwight@mathcs.emory.edu
Venue: Mathematics and Science Center, Room W301
A {\it tile} is a finite subset $T$ of $\mathbb{Z}^n$. It may or may not tile $\mathbb{Z}^n$, in the sense of $\mathbb{Z}^n$ having a partition into copies of $T$. However, Chalcraft conjectured that every $T$A does tile $\mathbb{Z}^d$ for some $d$. In this talk, we will discuss some examples, and also a proof of the conjecture, recently obtained in joint work with Vytautas Gruslys and Ta Sheng Tan.
(in 50 days)
Colloquium: Department
On Turan Problems for Weakly Quasirandom 3-uniform Hypergraphs
Christian Reiher, University Hamburg
Contact: Vojtech Rodl, Rodl@mathcs.emory.edu
Venue: Mathematics and Science Center, Room W301
In recent work, we found a new proof of a conjecture due to Erdös and Sós stating that large weakly quasirandom 3-uniform hypergraphs with density greater than 1/4 contain four vertices spanning at least three hyperedges. This was proved earlier by Glebov, Kral, and Volec using flag algebras and computers. The new proof is based on the hypergraph regularity method and gave rise to further developments some of which are surveyed in this talk. This is joint work with Vojtech Rodl and Mathias Schacht.