<正> We denote by π(x) the characteristi function of the interval (0, 1), πk=h-1πx/h and π(?)(x)= h-1π(x/h-j)(0≤j≤n-1,h=n/1). For w∈EA, construct Rhu = (Rhw)f, where
<正> Tourmaline is a widespread boroalumino-silicate mineral in rocks of various origins.It is well known that tourmaline varies widely in composition, and can
<正> The class of holomorphic functions f(z)=z+a2z2+.... in the unit circle |z|<1 is denoted by N, and the family of convex functions of N is denoted by K. Let f(z
<正> Katz and Miledi made the interesting discovery that when the frog sartorius muscle was divided into two portions, one nerve-free and the other innervated,