Department of Mathematics
University of California
Irvine, CA 92697-3875, USA
Martin Schechter
Abstract:
We show that many of the results obtained for the Landesman-Lazer type problems can be
extended to operators having unbounded essential spectra stretching from -∞
to +∞. The only requirement is that they have an isolated eigenvalue of finite
multiplicity.
Published October 6, 2021.
Math Subject Classifications: 35J35, 47J30, 49J35, 49J40, 58K05.
Key Words: Critical point theory; variational methods; saddle point theory;
semilinear differential equations
DOI: https://doi.org/10.58997/ejde.sp.01.s2
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This article was published posthumously.
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Martin Schechter Department of Mathematics University of California Irvine, CA 92697-3875, USA |
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