By some abstract results of operator equation, the fourthorder singular boundary value problem was discussed.
利用算子方程的一些抽象结果来讨论四阶奇异边值问题。
2
In this paper, the initial-boundary value problem of a kind of nonlinear fourth-order wave equations with damping and source terms is studied on the base of Beam equation.
本文在梁方程的基础上研究了一类具有非线性阻尼项和力源项的四阶波动方程的初边值问题。
3
The initial boundary value problem of fourthorder wave equation with dispersive and dissipative terms is studied.