A note on parabolic subgroups of a Coxeter group;
On irreducible, infinite, nonaffine Coxeter groups;
A note on irreducible, infinite Coxeter groups.
The following is a link to one of my joint work on the numerical study of some bifurcation diagrams of quadratic differential systems.Some bifurcation diagrams for limit cycles of quadratic differential systems.
At Georgia Southwestern, I am teaching a wide range of mathematics courses, including college algebra, precalculus, calculus, elementary statistics, linear algebra, discrete systems, scientific computation, modern geometry and number theory. The "modern geometry" and "number theory" courses are designed for pre-service teachers. They provide good training, concrete and interesting materials for students to learn to write mathematical proofs seriously.
At Ohio State, I taught several calculus sequences, some precalculus courses and a discrete math course. I taught introductory courses of complex analysis and differential equations to engineering students at Peking University in China.