The algorithm for a class of optimal control problem where the state variables are the weak solution of an elliptic partial differentialequation is studied.
研究一类最优控制问题的求解方法，其状态变量是某一种椭圆型偏微分方程的弱解。
2
At first we can get the Lagrangian function from the ellipticequation, then replace differential coefficient by difference and get the discrete Lagrangian function.
给定一个椭圆方程，我们先找出这个方程的拉氏函数，用差分代替微分，得到离散的拉氏函数。
3
This paper studies the necessary and sufficient condition of uniformly convergent difference scheme for the elliptic-parabolic partial differentialequation with a small parameter.