THE BOUNDS ABOUT THE WHEEL-WHEEL RAMSEY NUMBERS

In this paper, we determine the bounds about Ramsey number R(W_m, W_n),where W_i is a graph obtained from a cycle C_i and an additional vertex by joining it to every vertex of the cycle C_i. We prove that 3m+1 ≤ R(W_m, W_n) ≤8m-3 for odd n, m ≥ n ≥ 3, m ≥ 5, and 2m + 1 ≤ R(W_m, W_n) ≤ 7m-2 for even n and m ≥ n + 502. Especially, if m is sufficiently large and n = 3, we have R(W_m, W_3) = 3m + 1.     

多维随机变量序列的最大值和最小值的渐近独立性

设{X_n=(X_(1n),X_(2n),…,X_(mn),≥1}是i.i.d.的m维随机向量序列,Z_(in)=max{X_(i1),X_(i2),…,X_(in)},W_(in)=min{X_(i1),X_(i2),…,X_(in)},1≤i≤m,Z_n=(Z_(1n),Z_(2n),…,Z_(mn)),W_n=(W_(1n),W_(2n)…,W_(mn)).本文得出了W_n与Z_n渐近独立的充分必要条件.     

关于Pal-型(0;1;2)插值多项式的逼近

设(_(n-1)<(_(n-2)<…相似文献   

一类变换半群的秩

设自然数n≥4,X_n={1,2,…,n},证明了X_n上的保序压缩全变换半群W_n的秩为n-1.     

一阶椭圆型偏微分方程组的函数理论

本文研究2n个实椭圆型方程组的函数理论。方程的复标准形为其中W=(W_1,W_2…,W_n),A,B为函数矩阵,Q={Q_1, Q_2,…,Q_P},为准对角矩阵,而Q_i={qlk,i}为r_i阶方阵;当k>1时qlk,i=0,当k<1时qlk,i=β_i~(l-k),q_i,β_i,满足条件: 在研究方程组(1)的理论中,所谓推广的     

几何测度空间基的研究

研究了几何测度空间中的基本对称函数μ_0,μ_1,…,μ_n和内蕴体积函数V_0,V_1,…,V_n,证明了Lⁿ上连续不变赋值函数空间中由基本对称函数构成的基{μ_0,μ_1,…,μ_n}和由内蕴体积函数构成的基{V_0,V_1,…V_n}(或均质积分构成的基{W_0,W_1,…,W_n})等价.     

ON OPTIMAL INTERPOUTION FOR A DIFFERENTIABLE FUNCTION CLASS (Ⅰ)

§1. Introduction Given an integer. Let W_∞~((n))(IR) be a class of differentiablefunctions defined on IR, where for each f∈ W_∞~((n)) (IR) f~((n-1)) is absolu-tely continuous on any finite interval and || f~((n))||_∞     

一类拟轮图的亏格（英文）

设W_n是阶数为n+1的轮图.如果添加一个3-度的点到W_n中,所得图的亏格如何变化?本文通过联树模型得到γ(W_n⊕v_(typ)~1)=0,γ(W_n⊕v_(typ)~2)=1,γ(W_n⊕v_(typ)~3)=1.     

Halin图$Q$-谱半径的最大值

The Q-index of a graph G is the largest eigenvalue q(G) of its signless Laplacian matrix Q(G). In this paper, we prove that the wheel graph W_n = K_1 ∨C_(n-1)is the unique graph with maximal Q-index among all Halin graphs of order n. Also we obtain the unique graph with second maximal Q-index among all Halin graphs of order n.     

复Stiefel流形W_(n,2)的KO-群和J-群

<正> 命W_(n,2)为复Stiefel流形(复n维空间中的所有二维正交标架).本文的目的是计算KO~(-i)(W_(n,2))以及J(W_(n,2)).Z、Z_t分别表示整数加群、整数模t群. 引理.设包含映射i:Q_(n,2)(定义见[8])→W_(n,2).从Q_(n,2)→W_(n,2)→W_(n,2)/Q_(n,2)=S~(4n-4),有