 全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多   共条 当前为第41条到60条[由于搜索限制，当前仅支持显示前5页数据] 未完全匹配句对 Suppose the mathematical expectation of image signal is zero, the basic properties of the correlator output are given. 假定图象信号的数学期望为零,证明了相关器输出的基本性质。 We solve the problem of minimizing nonlinear square integration follow-edby using special computing methods. in which i=-1.J0(x) and J1(x) are order 0 and order 1 Bessel function separately. 我们使用特殊的计算手段求解了以非线性平方积分极小问题 J_0(X)和J_1(X)分别为零阶和一阶贝塞尔函数。 Discusses the time-like surfaces with null mean curvature vector in the 3-dimensional Minkowski space L3 = {R3:dx2- dy2 - dz2}, and gives the expressions of such surfaces with some examples included. 讨论三维Minkowski空间L~3={R~3:dx~2-dy~2-dz~2}中的平均曲率向量为零的类时曲面,给出了此种曲面的表示公式及实例。 In this paper,the Ricci curvatures of the two bundles are calculated by using the flag manifold techniques and the geometric quantization method respec- tively. 本文用阶化 flay 流形的技术和几何量子代方法分别计算了这两类丛的 Ricci 曲率,杂弦反常相消的条件由这两类丛的乘积丛的 Ricci 曲率为零给出. In this paper, we obtain the characterization of the symmetric primitive matrices whose exponent is 2n-4, and that of the symmetric primitive matrices with zero trace whose exponent is 2n-6. 本文刻划了指数为2n-4的对称本原矩阵和指教为2n-6且迹为零的对称本原矩阵的特征. Moreover,it is proved that a(T)=σ_0(T) holds for disjointness preseving Riesz operator T on a Banach lattice and only irreducible disjointness preserving Riesz operator on E is zero when dime=∞. 证明了对于 Banach 格上的 Riesz 算子 T 有σ(T)=σ_0(T); 当 dimE=∞时,E 上不可约的不交保持的 Riesz 算子必为零. In this paper, we obtain the graphic characterization of the symmetric primitive matrices with zero trace whose exponent is 2n-8. 本文刻划了迹为零且指数为2n-8的对称本原矩阵的特征. Let α_1,…,α_n be a K-dimensional set of vectors over the infinite field F (K is a positive integer,greater than 2). If there is C_i∈F,none of which is zero,so that sum from i=1 to n C_iα_i=0,then α_1,α_2,…,α_n is a t-linear depen- dent set of vectors. 设 a_1,…a_n 是无限域 F 上的 k (k 为正整数,且 k≥2)维向量组,若存在全不为零的 C_i∈F,使得 sum from i=1 to n Ci_a_i=0,则 a_1,a_2…,a_n 是 t—线性相关的向量组。 In this paper, we discuss the factorizability of entire functions with the follwing form: where P(z) and q(z) are polynomials of degree K and m respectively, K>m≥1, and m is odd, H_1(z) and H_2(z) are two entire functions of order less than m which are not identically zero. 本文讨论了如下形式的整函数的分解: 其中P(z)和q(z)分别为K次和m次多项式,且K>m≥1,m为奇数,而H_1(z)和H_2(z)是两个不恒为零的其级小于m的整函数. In this paper we prove that the exponent set of symmetric primitive matrices with zero trace is {2, 3,…, 2n-4}\S, where S is the set of all odd numbers in [n-2, 2n-4]. 本文证明了全体n阶迹为零的对称本原矩阵的指数集是{2,3,4,…,2n-4}\S,其中S是[n-2,2n-4]中的所有奇数。 Reference  gived that kernel i:H→E of monic morphism f:E→G in the categories with zero object is zero-morphism O_(H,E). 文献中给出了:具有零对象的范畴φ中单态射 f:E→G 的核i:H→E 为零态射 O_(H,E)。 V. ∫R~(R~e~(iP(x,y))Ω(x--y)|x--y|~(-R)f(y)dy, where P(x,y) is a real ploynormal on R~n×R~n,Ω(x) is homogeneous of degree 0, has mean value 0 and Ω(x)∈Llog~+L(S~(n-1) V.integral from n=R~n to e~(ip(x,g))Ω(x-y)|x-y|~(-1)f(y)dy,其中 P(xy)是R~n×R~n中的实多项式,Ω(x)是R~n中的零次齐次函数且在单位球面S~(n-1)的积分为零。 We give an iid representation for the PL estimator which is iid mean zero process and the remainder term is of order O((n-1 logn)3/4) a. 文中给出了关于二元PL估计的独立同分布表达式,即将估计的差表为均值为零的独立同分布过程的和,且其余项的阶为O((u~(-1)logn)~3/4)a. In this paper a formal power series(1)is considered where ai (i= 0,1,…) are arbitrary nonzero real numbers,ξ:(ω) are continuous random variables. 考虑了随机形式幂级数 f(z,ω)=a_0ξ_0(ω)+a_iξ_i(ω)z+…(1)的Pade逼近。 其中a_i(i=0,1,…)是全不为零的实数序列,ξ_i(ω)是独立的连续随机变量。 and (3) ni≤(N 2)/2 and Sobolev quotient is positive for prescribed scalar curvature vanishing on the submanifolds. （3）对在子流形上为零的指定曲率．其条件是ni≤（N—2）／2，以及索勃列夫商为正． Consider the linear model Fij = β0 + σieij, i = 1, 2,…, n,…,j = 1, 2, …, Ni, Where {eij} are Variance 1. Introduce a rondomly weighted estimate βn difined by (8). 设有线性模型Y_(ij)=β_0+σ_0e_(ij),i=1,2,…,n,…,j=1,2,…,N_i。 此处{e_(ij)}为独立同分布,且其均值为零,方差为1。 Let G_q denote a quantum linear group over an algebraically closed field K of characteristic sero,and(G_q)_1be the frobenius dernel of G_q In this paper,the assertion that any injective modulfor G_q has a rational G_q-module structure is proved。 G_q是特征为零的代数闭域K上的量子线性群，（G_q）、是G_q的无穷小群。 证明了任一个有限维的（G_q）、内射模都可以提升为G_q模。 In this paper the conditions for a integrand in lebesgue integral to become a zero function are discussed and weaker conditions are given. 本文讨论了Lebesgue积分中被积函数为零函数的条件，并给出了较弱的条件。 The paper is concerned with the semiparametric regression model Y = Xrβ+ g(T) +ε, where (Xr ,T, Y) are (k + 2)-dimensional random vector, g(·) is an unknown smooth function to be estimated, ε is variable error with zero mean and finite variance It is shown that the LS estimators of β is asymptotically efficiency in sense of Cramer if and only if ε- N(0, σ2). 本文考虑模型Y_i=X~Tβ+g(T)+ε,这里(X~T,T,Y,)是k+2-维随机向量,g是未知光滑函数,ε是均值为零方差有限的随机误差。 本文证明了,的最小二乘估计是Cramer渐近有效的充要条件是误差6服从正态分布N(0,口’)。 Let {X(t) : t ≥ 0} with X(0) = 0 be a pure birth process with birth rates λn,n ≥ 0. In this note, we prove a conjecture made by Faddy that Var{X(t)} > E{X(t)} holds for any increasing sequence of transition rates λ0 ≤ λ1 ≤ λ2 ≤ …and the reverse for any decreasing sequence. 设{X(t):t≥0}为零初值纯生过程,出生率为λ_n,n≥0.在本文中,我们证明了Faddy的一个猜测:当出生率为单调增加序列λ_0≤λ_1≤λ_2…。 时,Var{X(t)}≥E{(t)};

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