Electronic Journal of Differential Equations,
Vol. 2004(2004), No. 27, pp. 1-13.

Title: A radially symmetric anti-maximum principle and
       applications to fishery management models
       
Author: Junping Shi (College of William and Mary, Williamsburg, VA, USA)

Abstract: 
 For a boundary-value problem of an ordinary differential equation,
 we prove that the anti-maximum principle holds when the
 forcing term satisfies an integral inequality. As applications, we
 consider linear and  nonlinear models arising from fishery
 management problems.
  
Submitted December 16, 2003. Published February 25, 2004.
Math Subject Classifications: 34B05, 34B24, 92D25.
Key Words: Anti-maximum principle; Sturm-Liouville comparison lemma;
           nonlinear boundary value problem.