# Events for 10/18/2019 from all calendars

## Probability Seminar

**Time: ** 11:30AM - 12:30PM

**Location: ** BLOC 628

**Speaker: ** Louis-Pierre Arguin, CUNY

**Title: ***Large Values of the Riemann Zeta Function in Short Intervals*

**Abstract: **In a seminal paper in 2012, Fyodorov & Keating proposed a series of conjectures describing the statistics of large values of zeta in short intervals of the critical line. In particular, they relate these statistics to the ones of log-correlated Gaussian fields. In this lecture, I will present recent results that answer many aspects of these conjectures. Connections to problems in number theory will also be discussed.

## Postdoc Lunch Time Talks

**Time: ** 12:00PM - 12:20PM

**Location: ** BLOC 220

**Speaker: **Li Gao, Texas A&M University

**Description: **

Title: Quantum Majorization on injective von Neumann algebras.Abstract:Quantum majorization describes an ordering of states and processes in quantum mechanical systems. Recently, Gour et al proved a characterization of quantum majorization via conditional min-entropy. In this talk, I will explain the connection of their result to the tracial Hahn-Banach separation proved by Helton, Klep and McCullough. Using operator space duality, we are able to extends both results to injective von Neumann algebras. This is a joint work with Priyanga Ganesan, Satish Pandey and Sarah Plosker.

## Postdoc Lunch Time Talks

**Time: ** 12:35PM - 12:55PM

**Location: ** BLOC 220

**Speaker: **Emanuele Ventura, Texas A&M University

**Description: **

Title: Ranks of projective varietiesAbstract:Tensor ranks have recently attracted a lot of attention, because of their natural appearance in several applied contexts. However, the notion of rank may be generalized to any projective variety. I will talk about how ranks with respect to such a variety can be studied in terms of some classical objects in algebraic geometry such as secants.

## Mathematical Physics and Harmonic Analysis Seminar

**Time: ** 1:50PM - 2:50PM

**Location: ** BLOC 628

**Speaker: **Cody Stockdale, Washington University, St. Louis

**Title: ***A Different Approach to Endpoint Weak-type Estimates for Calderón-Zygmund Operators*

**Abstract: **The weak-type (1,1) estimate for Calderón-Zygmund operators is fundamental in harmonic analysis. This estimate was originally proved using the Calderón-Zygmund decomposition. To address more general settings, Nazarov, Treil, and Volberg gave a different proof of the weak-type (1,1) estimate. We investigate this alternative proof technique. We will compare the Calderón-Zygmund decomposition and Nazarov-Treil-Volberg techniques, discuss a simplification of the Nazarov-Treil-Volberg proof in the Lebesgue setting, and describe applications in a variation of the classical setting, weighted settings, and multilinear settings.

## Student/Postdoc Working Geometry Seminar

**Time: ** 2:00PM - 3:00PM

**Location: ** BLOC 624

**Speaker: **CJ Bott, TAMU

**Title: ***The BB cactus paper part II*

## Algebra and Combinatorics Seminar

**Time: ** 3:00PM - 3:50PM

**Location: ** BLOC 628

**Speaker: **Tolulope Oke, Texas A&M University

**Title: ***Cup products on Hochschild cohomology of a family of quiver algebras*

**Abstract: **Let k be a field, q\in k. We derive a cup product formula on the Hochschild cohomology HH^*(A_q) of a family $A_q$ of quiver algebras. Using this formula, we determine a subalgebra of k[x,y] isomorphic to HH^*(A_q)/N, where N is the ideal generated by homogeneous nilpotent elements. We discuss a finite generation conjecture in relation to this family.

## Student Working Seminar in Groups and Dynamics

**Time: ** 3:00PM - 4:00PM

**Location: ** BLOC 605AX

**Speaker: **Josiah Owens

**Title: ***Introduction to Ergodic Ramsey Theory*

## Geometry Seminar

**Time: ** 4:00PM - 5:00PM

**Location: ** BLOC 628

**Speaker: **Paulo Lima-Filho, Texas A&M University

**Title: ***Transforms of geometric currents under correspondences and regulators for Higher Chow groups.*

**Abstract: **In this talk we show how equidimensional algebraic correspondences between complex algebraic varieties can be used to construct pull-backs and transforms on a class of currents representable by integration. As a main application we exhibit explicit formulas at the level of complexes for a regulator map from the Higher Chow groups of smooth quasi-projective complex algebraic varieties to Deligne-Beilinson cohomology, utilizing the original simplicial description of Higher Chow groups with integral coefficients. The main ingredients come from Suslin's equidimensionality results, which show that suitable complexes of equidimensional correspondences are quasi-isomorphic to Bloch's original complex. We indicate how this can be applied to Voevodsky's motivic complexes and realizations of mixed motives. The GMT constructions may be extended to more general metric spaces, such as rigid analytic spaces. This is joint work with Pedro dos Santos and Robert Hardt.

## Linear Analysis Seminar

**Time: ** 4:00PM - 5:00PM

**Location: ** BLOC 220

**Speaker: **Li Gao, TAMU

**Title: ***Quantum entropy and noncommutative L_p norms*

**Abstract: **Entropy and its variants play a central role in both classical- and quantum information theory. In last decade, the connection between quantum entropies and noncommutative $L_p$-norms has found many application in quantum information. In this talk, I will explain how this connection provides functional analytic tools to entropic quantity, such as quantum channel capacity and entropic uncertainty principle. A new connection between relative entropy and subfactor index will also be mentioned. This talk is based on joint works with Marius Junge and Nicholas LaRacuente.