interaction with Tumanov in the coming years," said Gerald J. Janusz, chair of mathematics. Tumanov's recommendation letters describe his work as "elegant, deep and highly original," Janusz said. Research: several complex variables, differential geometry and partial differential equations. Teaching: partial differential equations for graduate students, and calculus and analytic geometry for undergraduates. Education: MA, Moscow State University; PhD, Moscow Institute. Tumanov came to the United States as a visiting associate professor at Purdue University from 1991 to 1992, and was an assistant professor at UIC last year.