Abdelkader Boucherif & Nawal Al-Malki
Abstract:
We propose a sufficient condition, on the nonlinear term,
for the existence of solutions. This new condition is weaker
than the usual sign condition and than the assumption on the
existence of constant upper and lower solutions.
Submitted February 24, 2004. Published April 6, 2004.
Math Subject Classifications: 34B15.
Key Words: Neumann problems, Caratheodory functions, a priori estimates,
topological transversality theorem.
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Abdelkader Boucherif King Fahd University of Petroleum and Minerals Department of Mathematical Sciences Box 5046, Dhahran 31261, Saudi Arabia email: aboucher@kfupm.edu.sa |
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| Nawal Al-Malki Science College for Girls Department of Mathematics Box 838, Dammam. Saudi Arabia email: malkinh@yahoo.com |
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