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# Faculty Research Areas

Our faculty perform original research in many different areas of mathematics.

Faculty who perform research in the area of abstract algebra:

Faculty who perform research in the area of Analysis:

Faculty who perform research in the area of Combinatorics:

Faculty who perform research in the area of Dynamical Systems:

Faculty who perform research in Number Theory:

Faculty who perform research in Probability Theory:

Faculty who perform research in Statistics:

**Abstract Algebra**is the branch of mathematics concerned with such structures as groups, rings, fields, vector spaces, and modules. Each of these algebraic structures are abstractions of the number systems and arithmetic that we deal with in everyday life. Research in the field of Abstract Algebra is often aimed at trying to understand the deep underlying properties of these abstract algebraic structures.Faculty who perform research in the area of abstract algebra:

- Allan Berele - associative rings and algebras
- Jeffrey Bergen - associative rings and algebras
- Sarah Bockting-Conrad - algebraic combinatorics, representation theory, quantum groups
- Andrew Carroll - representation theory, invariant theory
- Stefan Catoiu - noncommutative algebra, representation theory
- William Chin - Hopf algebras, representation theory
- Christopher Drupieski - representation theory, Lie algebras, algebraic groups
- Yevgenia Kashina - Hopf algebras
- Stefanos Orfanos - geometric group theory

**Analysis**is the branch of mathematics that includes the theories of limits, derivatives, integrals, infinite series, and continuous functions. It is an extension of the ideas and techniques that were first developed in the study of Calculus. The modern foundations of mathematical analysis were established in the 17th century by such noted figures as Isaac Newton and Gottfried Leibniz. Today, the techniques of mathematical analysis are applied throughout the physical sciences, in such fields of engineering as signal processing, and in quantitative finance.Faculty who perform research in the area of Analysis:

- Enrico Au-Yeung - pure and applied harmonic analysis, functional analysis
- Karl Liechty - analysis, probability, mathematical physics
- Stefanos Orfanos - operator algebras
- David Sher - spectral geometry
- Gang Wang - Fourier analysis, probability theory, stochastic processes
- Ahmed Zayed - applied harmonic analysis

**Combinatorics**is the art and science of counting. In all branches of mathematics, the question "How many?" often arises, and the tools of combinatorics can be used to try to answer this question. Fundamentally, combinatorics studies discrete structures as opposed to continuous ones, making the feel of this branch of mathematics quite different from, say, differential equations. Examples of discrete structures include graphs, permutations, finite (or countably infinite) groups, and cell decompositions of topological spaces.Faculty who perform research in the area of Combinatorics:

- T. Kyle Petersen - enumerative, algebraic, and topological combinatorics
- Bridget Tenner - enumerative, algebraic, and topological combinatorics

**Dynamical Systems**is the study of systems that change or evolve over time in accordance with some fixed set of rules. Examples of dynamical systems include populations of bacteria that grow at a particular rate, or the motion of a pendulum, which is governed by the rules of Newtonian mechanics.Faculty who perform research in the area of Dynamical Systems:

- Ilie Ugarcovici - dynamical systems, ergodic theory, population dynamics

**Number Theory****is the study of the integers and of their arithmetic. Number theory also includes the study of other related number systems where it also makes sense to talk about such concepts as divisibility and primes. The subject of number theory is renowned for its many old and simply-stated problems that have resisted the best efforts of generations of mathematicians. As a result, modern number theory has come to borrow tools from virtually every branch of mathematics, and has become an incredibly broad and deep field with scores of specializations and applications. Some of the most well-known applications of elementary theorems from number theory are in the field of cryptography.**Faculty who perform research in Number Theory:

- Nick Ramsey -
*p-*adic properties of modular forms, Euclidean rings and ideals - Katherine Thompson - integral quadratic forms

**Probability Theory**is concerned with the mathematical analysis of random phenomena, and is the mathematical foundation for statistics.Faculty who perform research in Probability Theory:

- Karl Liechty - analysis, probability, mathematical physics
- Gang Wang - probability theory, stochastic processes

**Statistics**is a discipline that uses mathematical and statistical theories to learn from data. Statistics concerns every aspect of data, from the design of experiments, to collecting data, to analyzing data, to presenting findings. Statistical techniques can be applied in a wide variety of disciplines such as biology, business, economics, psychology, public health, and education.Faculty who perform research in Statistics:

- Desale Habtzghi - survival analysis, biostatistics, statistical computing
- Juan Hu - geospatial data modeling, massive data analysis, nonparametric modeling
- Hung-Chih Ku - statistical genetics, genome-wide association studies
- Yiou Li - methodologies in statistics and computational mathematics
- Claudia Schmegner - mathematical statistics, Bayesian analysis, sequential procedures
- Gang Wang - probability theory, stochastic processes, statistics