A labeled graph is an ordered pair (G,L) consisting of a graph G and its labeling L:V(G)→{1,2,...,n},where n=|V(G)|.An increasing nonconsecutive path in a labe
芥川在典籍词章里建立起对于中国古典美的幻想,在他1921年第一次踏上中国的土地,就开始土崩瓦解……在其备受争议的《中国游记》一书中,折射出的是一个饱经患难面目沧桑的近
In this paper attempts are made at answering the problems on the statistical properties of activity flow time in PERT raised by the late famous mathematician Hu
In this note,an example of two homogeneous Cantor sets whose arithmetic sum is a homogeneous Cantor set with a positive Lebesgue measure is given.
<正>第六次人口普查中,赵姓占全国汉族人口总数的2.29%,是中国第七大姓。在《百家姓》中赵姓起首,和人数无关,《百家姓》形成于宋初的吴越钱塘地区,故而宋朝皇帝的赵氏、吴越
The nonlinear differential equation x′(t)=-δ(t)x(t)+f(t,x(t))(*) is considered,where δ(t) is a periodic function of periodic T,f(t,x) is continuous and perio
报名出洋的幼童,几乎没有一个是世家权贵子弟,大多和容闳一样出身寒微。也许只有这样的人家才"豁得出去",送孩子出洋一搏。这与今天的情形正好相反。近年,留学大潮和央视纪录
In this paper the sufficient conditions for the existence of positive solutions of the neutral difference equations with positive and negative coefficients are
Let G be a k-connected simple graph with order n. The k-diameter, combining connectivity with diameter, of G is the minimum integer dk(G) for which between any
The singularly perturbed initial boundary value problems for reaction diffusion equations are considered. Under suitable conditions and by using the theory of d