Titlebook: Constructive Methods for Nonlinear Boundary Value Problems and Nonlinear Oscillations; Conference at the Ob J. Albrecht,L. Collatz,K. Kirch

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https://doi.org/10.1007/978-3-540-85523-1rder 4 and 2 respectively to be equivalent with an eigenvalue problem involving a linear, compact, positive integral operator. By means of the theory for such operators the existence of a nonnegative eigenfunction belonging to the smallest positive eigenvalue of the original problem is concluded. Th