# Events for March 28, 2018 from General and Seminar calendars

## Noncommutative Geometry Seminar

**Time:** 2:00PM - 2:50PM

**Location:** BLOC 628

**Speaker:** Yi Wang, Texas A&M University

**Title:** *Poincare type inequality and the Arveson-Douglas Conjecture*

**Abstract:**The Poincare inequality says that the Lp norm of a function is controlled by its gradient. Boas and Straube improved that inequality by adding a weight function on the gradient. By applying this inequality on the Hardy and Bergman spaces on bounded strongly pseudoconvex domains with smooth boundary, we show that the Hardy norm of a function is equivalent to a weighted Bergman norm of its gradient. This allows us to apply existing techniques for submodules of the Bergman module, and obtain essential normality for principal submodules of the Hardy module.

## AMUSE

**Time:** 6:00PM - 7:00PM

**Location:** BLOC 220

**Speaker:** Dr. Anne Shiu, Texas A&M University, Department of Mathematics

**Title:** *Recovering parameters in mathematical models*

**Abstract:**Ordinary differential equation (ODE) models are very common in applications. This talk addresses, for ODE models that are linear, the problem of when parameters can be recovered from data. I will highlight how techniques from differential algebra reduce the problem to one that can be solved using linear algebra and combinatorics. I will also highlight some examples coming from biology. No background will be assumed.