Eigen Talk, "Plugging into Partial Differential
Equations", Department of Mathematics, Andrews University,
October 10, 2003.
AMS
Sectional Meeting, "The Existence
and Uniqueness of General Competition Model", Ann Arbor, Michigan, March 1, 2002.
Colloquium, "Coexistence of Two Competing Species of Animals", Department of
Mathematics, Andrews
University, February 15,
2002.
Partial Differential Equations Seminar, "Non-uniqueness of Lotka-Voltera
model", Department of Mathematics, Michigan
State University,
April 1, 1996.
Partial Differential Equations Seminar, "Uniqueness and Non-uniqueness of coexistence states in the Lotka-Voltera
model", Department of Mathematics, Michigan
State University,
March 25, 1996.
Partial Differential Equations Seminar, "Lower bound of elliptic inequality", Department
of Mathematics, Michigan
State University,
October 30, 1995.
