Alan C. Lazer
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 fix-point theorem, polar coordinates.
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| Alan C. Lazer |
Department of Mathematics
University of Miami
Coral Gables, FL 33124, USA.
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