Events for 09/07/2016 from all calendars

Number Theory Seminar

Time: 1:45PM - 2:45PM

Location: BLOC 220

Speaker: Yujiao Jiang , Shandong University

Title: Strong orthogonality between the Mobius function, additive characters and Fourier coefficients of GL(3) automorphic forms

Abstract: In this talk, I shall firstly review the progress of the M\"obius randomness law in analytic number theory. Then we present some recent results related to GL(3) automorphic forms. This is joint work with Hou and Lü.

URL: Event link

Noncommutative Geometry Seminar

Time: 2:00PM - 2:50PM

Location: BLOC 628

Speaker: Alexander Engel, Texas A&M University

Title: Burghelea conjecture

Abstract: In the first half of the talk we will quickly introduce the algebraic Baum-Connes conjecture and the Burghelea conjecture and discuss their relation. In the second half I will report about recent results on the Burghelea conjecture. This is joint work with Michal Marcinkowski.

Numerical Analysis Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 627

Speaker: Peter Oswald

Title: TBA

Groups and Dynamics Seminar

Time: 3:00PM - 4:00PM

Location: BLOC 220

Speaker: Zoran Sunic, Texas A&M University

Title: Hanoi Towers Group I

Abstract: This will be the first in a series of talks devoted to the Hanoi Towers group H which models the famous XIX century game invented by the French mathematician Lucas (yes, the one from the Lucas sequence).
The group H is a finitely generated, self-similar group acting on a rooted ternary tree in such a way that the Schreier graph of the action on level N models the game played with N disks (the vertices represent the possible configurations and the group generators the possible moves). It can also be viewed as a finitely generated group of isometries of the Cantor set.
The group H has many interesting properties in its own right:
- It is the first first known example of a finitely generated branch group that maps onto the infinite dihedral group.
- It is amenable but not elementary amenable group.
- It is the iterated monodromy group of a post-critically finite rational map on the Riemann sphere.
- Its closure is finitely constrained (in the sense of symbolic dynamics on trees).
- Its Hausdorff dimension is irrational and its limit space is the well known Sierpiński gasket.
- It was the first example of a finitely generated branch group with nontrivial rigid kernel.
- Calculations involving finite dimensional permutational representations of H based on the self-similarity of the group lead to calculation of the spectra of the Sierpiński graphs.
- It has exponential growth.
- It contains a copy of every finite 3-group.
- The elements of the group may be described as finite automata.
- ...
Notable subgroups (Apollonian group, intertwined odometers groups), the higher Hanoi Towers groups (related to versions of the game with more than 3 pegs), and other variations will also be discussed.

First Year Graduate Student Seminar

Time: 5:30PM - 6:30PM

Location: BLOC 628

Speaker: David Manuel

Title: Grading and help session assignments.