Nonlinear Differential Equations,
Electron. J. Diff. Eqns., Conf. 05, 2000, pp. 113119.
A Second look at the first result of LandesmanLazer type
Alan C. Lazer
Abstract:
We discuss some results concerning periodic and almot periodic solutions
of ordinary differential equations which are precursors of a result on
weak solutions of a semilinear elliptic boundary due to E. M. Landesman
and the author. It is observed that in the earliest of these, if one
looks for periodic solutions instead of almost peridic solutions,
then the conditions can be relaxed.
Published October 25, 2000.
Math Subject Classifications: 34C25, 34C27.
Key Words: Globally asymptotically stable, Brouwer fixpoint theorem,
polar coordinates.
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Alan C. Lazer
Department of Mathematics
University of Miami
Coral Gables, FL 33124, USA.
email: A.Lazer@math.miami.edu 
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