On nonlocal calculation for inhomogeneous indefinite Neumann boundary value problems |
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Authors: | Yavdat Il’yasov Thomas Runst |
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Institution: | (1) Mathematical Department, Bashkir State University, 450074 Ufa, Russia;(2) Mathematisches Institut, Friedrich-Schiller-Universität Jena, 07740 Jena, Germany |
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Abstract: | This paper concerns with a family of inhomogeneous Neumann boundary value problems having indefinite nonlinearities which depend on a real parameter
. We discuss the existence and the multiplicity of positive solutions with respect to
. Developing the fibering method further, we can introduce a constructive concept of the calculation of certain nonlocal intervals
, the so-called sufficient intervals of the existence. Then we are able to prove some new results on the existence and the multiplicity of positive solutions
for
.Received: 22 December 2003, Accepted: 29 January 2004, Published online: 16 July 2004Mathematics Subject Classification (2000):
35J70, 35J65, 47H17 |
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Keywords: | |
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