UPPER AND LOWER SOLUTIONS TO A NONLINEAR SEPARATED BOUNDARY VALUE PROBLEM
UPPER AND LOWER SOLUTIONS TO A NONLINEAR SEPARATED BOUNDARY VALUE PROBLEM
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摘要:
This paper is concerned with a third-order nonlinear separated boundary value problem. By the Leray-Schauder degree theory and the method of upper and lower solutions, we obtain the existence of at least three solutions to the problem.