About Me
I am on a 3-year (2007-2010) postdoc contract with The University of Arizona, Department of Mathematics, associated with the NSF-funded Arizona Teacher Initiative of Institute for Mathematics and Education, from 2007 to 2010. During the years from 2002 to 2007, I was a graduate student at the Department of Mathematics, Brandeis University, working with my thesis advisor Dr. Ira Gessel in the area of algebraic combinatorics. Before that, I got my Bachelor's degree in mathematics in Nankai University, China. If interested, you may go to my homepages on teaching and research for more details about what I have done in the past.
Contact
Department of Mathematics
The University of Arizona
617 N Santa Rita Ave.
P.O. Box 210089
Tucson, AZ 85721-0089
Office:
Math 319
Email: jli at email.arizona.edu
Phone: (520) 621-6870
Fax: (520) 621-8322
Teaching
Courses
- Fall 2008: Math 129 --- Calculus II
- Spring 2008: Math 505 C --- Algebra for Mathematics Education (D2L)
- Fall 2007: Math 124 Sec 018 --- Calculus I with applications
Presentations
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September 25, 2007. I gave a talk on the Mathematics Instruction Colloquium: Not Only About Mathematics Tutoring.
- talk slides, powerpoint, pdf, 19 pages.
- tutoring notes slides, pdf, 22 pages
Research
I work on algebraic combinatorics. My research focuses on enumerating graphs with certain properties using the combinatorial theory of species founded by Joyal.
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Presentations Slides
Cartesian Product of Graphs and Automorphism Groups of Prime Powers, pdf, 36 pages, Group Theory Seminar, University of Arizona, September 2007.
Counting Point-Determining Graphs and Prime Graphs, pdf, 50 pages, thesis defense, Brandeis University, May 2007.
A Bijection for Counting Bi-Point-Determining Graphs, pdf, 23 pages, Combinatorics Seminar, Brandeis University, April 2007.
Arithmetic Product of Species and Cartesian Product of Graphs, pdf, 50 pages, Combinatorics Seminar, MIT, March 2007.
Counting Point-Determining Graphs, pdf, 28 pages, Joint Meetings of AMS at New Orleans, January 2007. -
Preprints
(with Ira Gessel) On Point-Determining Graphs, 22 pages, 16 figures, arXiv: math.CO/0705.0042, 2007.
Prime Graphs and Exponential Composition of Species, 27 pages, 6 figures, arXiv: math.CO/0705.0038, 2007.
