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A note on a beam equation with nonlinear boundary conditions. (English) Zbl 1219.34028

The existence of multiple positive solutions for a fourth order beam equation under nonlocal and nonlinear boundary conditions is proved. The results are obtained by the use of fixed point index theory to a perturbed Hammerstein integral equation that is equivalent to the original problem.

MSC:

34B10 Nonlocal and multipoint boundary value problems for ordinary differential equations
34B18 Positive solutions to nonlinear boundary value problems for ordinary differential equations
47N20 Applications of operator theory to differential and integral equations
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