Let {X, Xi;i≥1} be a sequence of i.i.d.r.v'.s, Z(t) =∑ti=1 Xi, t≥O.Consider the renewal process N(t) = inf{x; Z(x) > t}. In this paper we study the neces
Abstract. Let S be a set of finite plauar points. A llne segment L(p, q) with p, q E Sis called a stable line segment of S, if there is no Line segment with two