PIMS/AMI Seminar: Fernando Pestana da Costa

  • Date: 06/05/2012
  • Time: 15:30
Fernando Pestana da Costa ( Universidade Aberta, Lisboa, Portugal)

University of Alberta


“A nonautonomous predator-prey system arising from coagulation theory: is it of any use in biomathematics?”




A recent paper of Budác et al. on the selfsimilar behaviour of solutions to a model of coagulation with maximum size led us to consider a nonautonomous Lotka-Volterra predator-prey system in which the vector field of the predator equation converges to zero as t --> ∞. The solutions of this system show a behaviour distinctly different from those of either autonomous or periodic analogs. A partial numerical and analytical study of these systems is initiated. An ecological interpretation of this type of systems is proposed.  A generalization containing self-inhibitory terms is proposed and a conjecture about the limit points of solutions is made based on numerical experiments.  Co-authors: Joao Teixeira Pinto (IST, Lisbon) and Alfredo Cano (UNED, Madrid)

Other Information: 

Location: CAB365


Refreshments will be served in CAB 649 at 3:00 p.m.