Julius Esunge, assistant professor of mathematics, had his article “Density Dependent Utilities with Transaction Costs” published in the December issue of the journal Communications on Stochastic Analysis.
Leo Lee Publishes Two Articles
Leo Lee, assistant professor of mathematics, published two articles this fall. His article “Error Estimates of Stochastic Optimal Neumann Boundary Control Problems” appeared in the SIAM Journal on Numerical Analysis (http://epubs.siam.org/sinum/resource/1/sjnaam/v49/i4/p1532_s1?isAuthorized=no).
Dr. Lee’s second article, “Finite Element Approximations of Stochastic Optimal Control Problems Constrained by Stochastic Elliptic PDEs,” appeared in the Journal of Mathematical Analysis and Applications (http://www.sciencedirect.com/science/article/pii/S0022247X10006062).
Mathematics Student Wins Award at Regional Conference
UMW mathematics major Kathryn Dillinger won second place for her poster presentation at the Shenandoah Undergraduate Mathematics and Statistics (SUMS) conference held at James Madison University on Saturday, October 29. Her poster, titled Profiting with Options Using the Black-Scholes Equation, details her work completed during the Summer Science Institute of 2011 under the guidance of Dr. Leo Lee.
Keith Mellinger
Keith E. Mellinger, associate professor and chair of the department of mathematics, and former UMW student Jake Farinholt coauthored the article “Minimal generators for BCH codes” published in spring 2011 issue of The Pi Mu Epsilon Journal, an official publication of the national honorary mathematics society.
Mary Rigsby and Suzanne Sumner Present at Teaching Professor Conference
Mary Rigsby, professor of English, and Suzanne Sumner, professor of mathematics, gave an invited feature presentation at the Teaching Professor Conference in Atlanta, Georgia, held May 20-22, titled “BustingWalls and Overcoming Blahs: Knotty Problems and Speed Dating.” The Teaching Professor Conference is a premier international conference on teaching pedagogy at the college level, with 800 participants from 10 countries.
Rigsby and Sumner received this invitation because of their past participation in Teaching Professor conferences, and to share their
experiences as former directors of UMW’s Teaching Innovation Program. In addition, Sumner is currently on the advisory board for the Teaching Professor Conference and reviewed proposals for contributed sessions for the conference.
Kathryn Loesser-Casey and Debra Hydorn

Kathryn Loesser-Casey, professor of biological sciences, and Debra Hydorn, professor of mathematics, gave the poster presentation “Putting BIO2010 Into Practice: A Course on the Research Process for STEM Majors” at the Association of American Colleges and Universities conference “Engaged STEM Learning: From Promising to Pervasive Practices” held in Miami in March. The poster presentation provided an opportunity for Hydorn and Loesser-Casey to share information about the UMW course, Biology 260 The Research Process, with faculty from across the STEM disciplines.
Keith Mellinger
Keith E. Mellinger, associate professor and chair of the Department of Mathematics, had the article “Spreads, Arcs, and Multiple Wavelength Codes” published in the journal Discrete Mathematics. In addition, his article “On the Number of K-Gons in Finite Projective Planes” was published in the Italian journal Note di Mathematica.
Debra Hydorn
Debra L. Hydorn, professor of mathematics, gave an invited presentation on community service-learning in statistics at the eighth International Conference on Teaching Statistics (ICOTS) held in Ljubljana, Slovenia in July. Her presentation, “Combining On- and Off-Campus Service-Learning in a Statistics Methods Course,” described how students in MATH 210 Statistical Methods provide statistical consulting for students enrolled in Biology Professor Kathy Loesser-Casey’s BIOL 385 Human Physiology. ICOTS is held every four years and is organized by the International Association for Statistical Education. According to the conference website, the main purpose of ICOTS is to “give statistics educators and professionals around the world the opportunity to exchange information, ideas and experiences, to present recent innovation and research in the field of statistics education, and to expand their range of collaborators.”
Larry Lehman
Larry Lehman, professor of mathematics, published the article “Recursive Sequences and Polynomial Congruences” in Involve, a journal dedicated to faculty-student research papers in mathematics. The article was co-written with Christopher Triola ’09 and is based on an undergraduate research project performed during the 2007 Summer Science Institute at Mary Washington.
Janusz Konieczny
Janusz Konieczny, professor of mathematics, published four research articles (the last two as a co-author): “Centralizers in the semigroup of injective transformations on an infinite set” in the Bulletin of the Australian Mathematical Society, “Infinite injective transformations whose centralizers have simple structure” in the Central European Journal of Mathematics, “Automorphisms of endomorphism semigroups of reflexive digraphs” in Mathematische Nachrichten, and “Minimal paths in the commuting graphs of semigroups” in the European Journal of Combinatorics. He was an invited speaker at the “Workshop on Universal Algebra, Complexity and Constraint Satisfaction Problems” in Lisbon, Portugal, and gave an invited seminar talk at the Center of Algebra of the University of Lisbon, Portugal.

