Extremal solutions and comparison principle for nonlinear integro-differential equations in a Banach space |
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Authors: | Chen Yubo Zhuang Wan |
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Institution: | (1) Department of Mathematics, Shandong Normal University, Jinan, China |
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Abstract: | In this paper, we consider an initial value problem for nonlinear integro-differential equations in a Banach space. First,
we give a comparison result between the under and over functions and some comparison principles. Then, using these results
and the Kuratowski measure of noncompactness, we establish the existence theorem of extremal solutions between the under and
over functions, and prove that there exists a unique solution between the lower and upper solutions under an additional Lipschitz's
condition.
Project supported by the Natural Science Foundation of Shandong Province. |
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Keywords: | |
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