Hostname: page-component-74656f9884-npj9w Total loading time: 0 Render date: 2026-11-10T08:54:02.310Z Has data issue: false hasContentIssue false

Zero-Stabilization for Some Diffusive Modelswith State Constraints

Published online by Cambridge University Press:  20 June 2014

S. Aniţa*
Affiliation:
Faculty of Mathematics, “Alexandru Ioan Cuza” University of Iaşi, Iaşi 700506, Romania “Octav Mayer” Institute of Mathematics of the Romanian Academy, Iaşi 700506, Romania
*
⋆Corresponding author. E-mail: sanita@uaic.ro

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

We discuss the zero-controllability and the zero-stabilizability for the nonnegative solutions to some Fisher-like models with nonlocal terms describing the dynamics of biological populations with diffusion, logistic term and migration. A necessary and sufficient condition for the nonnegative zero-stabilizabiity for a linear integro-partial differential equation is obtained in terms of the sign of the principal eigenvalue to a certain non-selfadjoint operator. For a related semilinear problem a necessary condition and a sufficient condition for the local nonnegative zero-stabilizability are also derived in terms of the magnitude of the above mentioned principal eigenvalue. The rate of stabilization corresponding to a simple feedback stabilizing control is dictated by the principal eigenvalue. A large principal eigenvalue leads to a fast stabilization to zero. A necessary condition and a sufficient condition for the stabilization to zero of the predator population in a predator-prey system is also investigated. Finally, a method to approximate the above mentioned principal eigenvalues is indicated.

Information

Type
Research Article
Copyright
© EDP Sciences, 2014