### Announcements

## Jill Pipher to Deliver Inaugural Mathematics Distinguished Lecture

We are pleased to announce that Jill Pipher (Elisha Benjamin Andrews Professor of Mathematics at Brown University) will deliver the inaugural UConn Mathematics Distinguished Lecture on Friday, April 19. More information TBA.

[Read More]## AMS Spring Eastern Sectional Meeting, April 13-14, 2019

## Congratulations to Winners of Fall 2018 Integration Bee

On October 25th, 2018 the UConn graduate student chapter of the AMS held their Second Annual Integration Bee, where undergraduates of varying levels of mathematical background came together to test their knowledge of integrals. Students took turns in groups of six, going to the blackboard to compute various integrals on the spot. In each round […]

[Read More]### News & Achievements

## Liang Xiao awarded NSF CAREER grant

## Complex Math Visuals are This Researcher’s Handiwork

## Students present at 2018 Spring Frontiers Exhibition

Three undergraduate students presented posters on their math research during the 2018 Spring Frontiers Exhibition sponsored by the Office of Undergraduate Research (OUR). Sailesh Simhadri presented his SURF-funded project on random processes associated to linear recurrences. Raji Majumdar and Anthony Sisti presented their research from last summer on applications of Central Limit Theorems to […]

[Read More]## Actuarial program named Center for Actuarial Excellence for eighth consecutive year

## Graduate student receives CETL Outstanding Teaching Award

Phanuel Mariano, a graduate student in mathematics, received the 2018 Outstanding Graduate Teaching Award from the Center for Excellence in Teaching and Learning (CETL). This is a university-wide award, including the regional campuses, that honors Teaching Assistants who have gone well beyond the call of duty to affect the student learning and experience for undergraduate […]

[Read More]### Upcoming Events

- Jan
23
Algebra Seminar

Organization

Algebra group11:15am - Jan
24
Mathematics Colloquium

Nonlocal problems: from physics to geometry

Yannick Sire (Johns Hopkins University)4:00pm - Jan
25
Analysis and Probability Seminar

Singular perturbations of half Ginzburg-Landau and harmonic maps

Yannick Sire (Johns Hopkins University)1:30pm - Jan
28
Actuarial Science Seminar

Application of Bayesian sensitivity analysis in compound risk model with random effects

Himchan Jeong (UCONN)11:00am - Jan
28
PDE and Differential Geometry Seminar

The Gauss Image Problem

Yiming Zhao, MIT2:30pm

#### Algebra Seminar

Organization

Algebra group

Wednesday, January 23rd, 2019

11:15 AM - 12:05 PM

Storrs Campus

Monteith, 313

Contact Information: Mihai Fulger, mihai.fulger@uconn.edu

More#### Mathematics Colloquium

Nonlocal problems: from physics to geometry

Yannick Sire (Johns Hopkins University)

Thursday, January 24th, 2019

04:00 PM - 05:00 PM

Storrs Campus

MONT 214

I will give an overview of the current state of the art in a bunch of selected topics, emphasizing on differences between local and nonlocal phenomena.

Contact Information: Fabrice Baudoin

More#### Analysis and Probability Seminar

Singular perturbations of half Ginzburg-Landau and harmonic maps

Yannick Sire (Johns Hopkins University)

Friday, January 25th, 2019

01:30 PM - 02:30 PM

Storrs Campus

MONT 421

Contact Information: Scott Zimmerman, scott.zimmerman@uconn.edu

More#### Actuarial Science Seminar

Application of Bayesian sensitivity analysis in compound risk model with random effects

Himchan Jeong (UCONN)

Monday, January 28th, 2019

11:00 AM - 12:00 PM

Storrs Campus

MONT 214

In this article, the concept of Bregman divergence is explored, which has some good properties for statistical modeling and can be connected to diverse model selection diagnostics as in Goh and Dey (2014). We can apply model diagnostics derived from the Bregman divergence for testing robustness of priors both on the naive model, which assumes that random effect has point mass as its prior density, and the proposed model, which assumes a continuous prior density of random effect. This approach provides the insurance companies concrete framework for testing the presence of random effects in both claim frequency and severity and furthermore appropriate hierarchical model which can explain both observed and unobserved heterogeneity of the policyholders for insurance ratemaking. Both models are calibrated using a claim dataset from the

Wisconsin Local Government Property Insurance Fund which includes both observed claim counts and amounts from a portfolio of policyholders.

Contact Information: Bin Zou, bin.zou@uconn.edu

More#### PDE and Differential Geometry Seminar

The Gauss Image Problem

Yiming Zhao, MIT

Monday, January 28th, 2019

02:30 PM - 03:30 PM

Storrs Campus

MONT 214

In the smooth category, the Gauss image problem reduces to an equation of Monge-AmpÃ¨re type. However, in this talk, we shall focus on the problem in the general setting (rather than imposing any non-necessary smoothness assumptions). Existence and uniqueness results will be presented.

This is a joint work with KÃ¡roly BÃ¶rÃ¶czky, Erwin Lutwak, Deane Yang, and Gaoyong Zhang.

Contact Information: Wang, lihan.wang@uconn.edu

More