GENERAL SOLUTION OF ELASTODYNAMICS

The elastodynamic problem is investigated via stokes-Helmholtz separation of thevector with time,and the general solutions of Lamé equation are derived.The medium isassumed to be homogeneous and isotropic.     

Nonlinear boundary value problems

In this paper we consider two quasilinear boundary value problems. The first is vector valued and has periodic boundary conditions. The second is scalar valued with nonlinear boundary conditions determined by multivalued maximal monotone maps. Using the theory of maximal monotone operators for reflexive Banach spaces and the Leray-Schauder principle we establish the existence of solutions for both problems.     

B(X)上的保k次幂线性映射

设Ｘ 为Ｂａｎａｃｈ 空间,Ｂ（Ｘ）为Ｘ 上有界线性算子全体组成的代数,本文给出了Ｂ（Ｘ）上保ｋ 次幂弱连续线性满射的完全刻划．     

弱几乎周期点的一点注记

本文证明了符号空间中存在混沌集Ｓ１,Ｓ２分别满足Ｓ１∪→Ｒ（σ）－Ｗ（σ）和Ｓ２∪→Ｗ（σ）－ＡＰ（σ）,并证明了具伪轨跟踪性质的紧致度量空间上的连续满射ｆ,以下条件互相等价：１）ＣＲ（ｆ）≠Ｒ（ｆ） ２）Ｒ（ｆ）≠Ｗ（ｆ） ３）Ｗ（ｆ）ＡＰ（ｆ）。     

弱阻尼KdV方程中长期动力学行为研究*

证明了周期边界条件下弱阻尼KdV方程存在近似惯性流形．该流形使吸引子被确切定义的有限维光滑流形逼近．并由此概念引出新的数值方法很好地用于研究动力系统长期行为．