Talk by Nicolas Lanchier (Arizona State University)
Date and Time: Thursday, March 12, 2009, 10:00 AM in AP&M 6402.
Title: Coexistence in spatially explicit metapopulations
Abstract:
The multitype contact process is a stochastic model including
space in the form of local interactions and describing the
evolution of two species competing on a connected graph. While
it is conjectured for the multitype contact process on the two-
dimensional regular lattice that, regardless of their birth
and death rates, species cannot coexist at equilibrium, we
prove that two species with opposite strategies (specialist
versus generalist) coexist on a connected graph including two
levels of interactions.