Bull. Korean Math. Soc. 2015; 52(4): 1225-1240
Printed July 31, 2015
https://doi.org/10.4134/BKMS.2015.52.4.1225
Copyright © The Korean Mathematical Society.
Sung Woo Choi
Duksung Women's University
We provide a complete proof that there are no eigenvalues of the integral operator $\mathcal{K}_l$ outside the interval $(0,1/k)$. $\mathcal{K}_l$ arises naturally from the deflection problem of a beam with length $2l$ resting horizontally on an elastic foundation with spring constant $k$, while some vertical load is applied to the beam.
Keywords: beam, deflection, elastic foundation, integral operator, eigenvalue, $L^2$-norm
MSC numbers: Primary 34L15, 47G10, 74K10
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