“The one and only success which it is his to command is to bring to his work a mighty
heart.”

Oliver Wendell Holmes, Jr., *In Our Youth Our Hearts Were Touched With Fire*, 1884

# Andrew Ledoan

Associate Professor of Mathematics

Department of Mathematics

The University of Tennessee at Chattanooga

415 EMCS Building (Dept. 6956)

615 McCallie Avenue

Chattanooga, Tennessee 37403-2598

**Office** 417D EMCS Building**Telephone** +1 423 425 2755**Electronic-Mail** andrew-ledoan@utc.edu

#### REU Site: Research Training for Undergraduates in Mathematical Analysis with Applications in Allied Fields

This REU Site is supported by the National Science Foundation, and this support is gratefully acknowledged. Due to the COVID-19 pandemic, our 2020 Mathematics REU Summer Program has been postponed to Summer 2021.

To learn about our REU students’ hard work and accomplishments in the 2019 Mathematics REU Summer Program, please click on the link.

### General Information

From Drummondville, Québec, to San José, California, to Urbana, Illinois, to Rochester, New York, to Boston, Massachusetts, to Chattanooga, Tennessee—I suppose this makes me someone with great wanderlust and a keen interest in exploration. J’ai une imagination débordante—tu le sais bien. Before drifting into mathematics, I spent many moons at Orion Instruments Incorporated and Trimble Incorporated (formerly Trimble Navigation Limited) designing in-circuit emulators and GPS firmware for navigation, tracking, data collection, and timing—memories! After receiving the Ph.D. degree in 2007 from University of Illinois at Urbana–Champaign under advisor Alexandru Zaharescu, I worked for University of Rochester as a postdoctoral faculty under the supervision of Steven M. Gonek and for Boston College as a visiting assistant professor. During this time I also worked on prime numbers with Daniel A. Goldston at San José State University. I joined the faculty of The University of Tennessee at Chattanooga in 2011 and currently work as Associate Professor of Mathematics.

### Areas of Specialization

- Number Theory
- Probability and Mathematical Statistics

I am excited, also, about interdisciplinary research and currently studying forecasting and structural time-series models in financial economics.

### Teaching Duties

I am dedicated to the goal of promoting significant learning experiences among students. I love learning, teaching mathematics on various levels, and helping students. In Fall 2020 I will be teaching

- MATH 4300 Mathematics of Interest
- MATH 5250 Modern Algebra I

### Editorial Board

I currently serve on the Editorial Board of Punjab University Journal of Mathematics as Associate Editor. I am happy to communicate high quality papers in Number Theory, Mathematical Analysis, Probability, and Multivariate Analysis.

### Grants and Funding

- J. T. Ellis (PI), J. M. Kizza (Co-PI), A. H. Ledoan (Co-PI), and C. L. Cox (Co-PI), Leveraging Partnerships to Increase the Number of Highly Qualified Mathematics and Computer Science Teachers, NSF Award No. 1950253 ($74,948, August 2020–July 2021)
- A. H. Ledoan (PI), J. Wang (Co-PI), R. Nichols (Senior Personnel), and S. Marlow Omrsby (Senior Personnel), REU Site: Research Training for Undergraduates in Mathematical Analysis with Applications in Allied Fields, NSF Award No. 1852288 ($282,659, May 2019–April 2022)
- A. H. Ledoan (PI), R. Nichols (Co-PI), and C. Gao (Co-PI), Chattanooga Math Circle, MAA DMEG ($5,966, April 18, 2017–May 31, 2019)
- L. Kong (PI), J. R. Graef (Co-PI), and A. H. Ledoan (Co-PI), Modeling Online Social Network Dynamics and Predicting Information Diffusion with Fractional Differential Equations, Tennessee Higher Education Commission—Center of Excellence in Applied Computational Science and Engineering Grants Program FY2019 CEACSE Award ($96,380, July 1, 2018–June 30, 2019)
- J. R. Graef (PI), L. Kong (Co-PI), A. H. Ledoan (Senior Personnel), and Min Wang (Senior Personnel), REU Site: Differential/Difference Equation Models and Number Theory, NSF Award No. 1261308 ($290,000, May 2013–April 2017)

### Undergraduate Supervision

- Melissa Miller (B.S., 2016)
- Shannon Hyder (B.S., 2018)

### Graduate Supervision

- Ashley Holcomb (M.S., 2014)
- Gentry Jones (M.S., 2015)
- Benjamin Kimsey (M.S., 2015)
- Christopher Corley (Ph.D., in progress)

Christopher will present a talk on the density of complex zeros on random sums at the AMS Spring Southeastern Sectional Meeting’s *Special Session on Probabilistic Methods in Geometry and Analysis* to be held at University of Virginia (Charlottesville, VA) on March 13-15, 2020.

### Outreach

- UTC Math Club (faculty advisor)
- Chattanooga Math Circle

### Travel and Meetings

You can find me presenting talks at the following meetings and conferences:

- SERMON 2013 (SouthEastern Regional Meeting on Numbers), High Point University, High Point, North Carolina, April 13-14, 2013
- INTEGERS 2013 (The Erdős Centennial Conference), University of West Georgia, Carrollton, Georgia, October 24-27, 2013
- REU 2014 (Combinatorics, Number Theory and Graph Theory), University of West Georgia, Carrollton, Georgia, July 25, 2014 (Summer Colloquium Series)
- Mathematics Colloquium, University of Alabama at Birmingham, Birmingham, Alabama, April 17, 2015
- REU 2015 (Combinatorics, Number Theory and Graph Theory), University of West Georgia, Carrollton, Georgia, July 24, 2015
- Fifteenth International Conference in Approximation Theory (minisymposium Random Polynomials), San Antonio, Texas, May 22-25, 2016
- INTEGERS 2016, University of West Georgia, Carrollton, Georgia, October 6-9, 2016
- ICOMAS 2018 (International Conference on Mathematics and Statistics), University of Memphis, Memphis, May 7-10, 2018
- IX Jaén Conference on Approximation Theory, Universidad de Jaén, Úbeda, Jaén, Spain, July, 8-13, 2018
- Departamento de Matemáticas, Universidad de Cádiz, July 16, 2018
- Integers Conference 2018, Augusta, Georgia, October 3-6, 2018