UMR undergraduate Michael Purser will discuss the fundamentals of "set theory" Wednesday, Sept. 17, from noon to 1 p.m. in Room G5 of the Rolla Building. The lecture is part of a student research seminar series that provides a forum for undergraduate and graduate students in mathematics and statistics to present their findings. The campus community is invited. For more information, call 341-4901 or email insall@umr.edu.