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http://dx.doi.org/10.11568/kjm.2011.19.4.481

ASYMPTOTICALLY LINEAR BEAM EQUATION AND REDUCTION METHOD  

Choi, Q-Heung (Department of Mathematics Education Inha University)
Jung, Tacksun (Department of Mathematics Kunsan National University)
Publication Information
Korean Journal of Mathematics / v.19, no.4, 2011 , pp. 481-493 More about this Journal
Abstract
We prove a theorem which shows the existence of at least three ${\pi}$-periodic solutions of the wave equation with asymptotical linearity. We obtain this result by the finite dimensional reduction method which reduces the critical point results of the infinite dimensional space to those of the finite dimensional subspace. We also use the critical point theory and the variational method.
Keywords
asymptotically linear wave equation; Dirichlet boundary condition; critical point theory; finite dimensional reduction method; (P.S.) condition;
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