In the present paper the transformation of symmetricMarkov processes by symmetric martingale multiplicative functionals is studied and the corresponding Dirichl
The choice number of a graph G,denoted by X1(G),is the minimum number k such that if a list of k colors is given to each vertex of G,there is a vertex coloring
In this paper,some kinds of linear and nonlinear tracking-differentiators are designed by using suitable exponent functions instead of switch functions,and the