In this article the notion of quasi-symmetry is introduced. It is proved that the quasisymmetry is equivalent to the uniqueness of invariant measure of Levy pro
Abstract. In this paper it is proved that Lp solutions of a refinement equation exist if and only ifthe corresponding subdivision scheme with suitable initial f
This paper presents a class of C'<ontinuous B-type spline curves with some parametric factors. The length of their local support is equal to 4. Taking the d
Abstract. The singularly perturbed problems for elliptic systems in unbounded domains are considered. Under suitable conditions and by using the comparison theo