The notion of w-density for the graphs with positive weights on vertices and nonnegative weights on edges is introduced. A weighted graph is called w-balanced i
In this paper,we prove the convergence of the nodal expansion method,a new numerical method for partial differentisl equations and provide the error estimates o
Let {Y(t);t= (t1 ,t2)≥0} = {Xk(t1 ,t2);t1≥0,t2≥0}k∞=1 be a sequence of two-parameter Ornstein-Uhlenbeck processes (OUP2) with coefficients αk>0,βk>0. A Fern
In this paper, we propose a mixed method for solving two-dimensional unsteady vorticity equations by using Chebyshev spectral-fiuite element approximation. The