This paper deals with H-stability of Runge-Kutta methods with variable stepsize for the system of pantograph equations. It is shown that both Runge-Kutta method
In this paper, a dual approximate expression of the exact solution for mixed boundary value problems of second order elliptic PDE with small periodic coefficien
In this paper we introduce a primal-dual potential reduction algorithm for positivesemi-definite programming. Using the symetric preserving scalings for both pr
The conjugate gradient method for unconstrained optimization problems varies with a scalar. In this note, a general condition conceing the scalar is given, whic
This paper deals with the GPL-stability of the Implicit Runge-Kutta methods for the numerical solutions of the systems of delay differential equations. We focus
In this paper, the theory of parallel multi-stage & multi-step method is discussed, which is a form of combining Runge-Kutta method with linear multi-step metho