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“确定一般线性码的所有可能的重量谱”是通信系统中提出的一个有重要科学意义的基本理论问题. 但当k 或q 稍大时, 对于k 维q 元码, 这是不可能的, 问题的合理提法修改成: “确定k 维q 元一般线性码几乎所有的重量谱”. 基于有限射影几何方法, 本文研究V 类5 维q 元线性码, 文中找出了V 类5 维码的重量谱的新必要条件, 把V 类5 维码的重量谱分为两个子类,并发展改进了“子空间集法”,...
We study the asymptotic behavior of the least squares estimators of the unknown parameters of bifurcating autoregressive processes when some of the data are missing. We model the process of observed d...
We present a method for treatment of three charged particles. The proposed method has universal character and is applicable both for bound and continuum states. A finite rank approximation is used for...
In this work we investigate the multivariate statistical description of the matter distribution in the nonlinear regime.
In this paper we present some interesting results involving summation of series in particular trigonometric ones.
Imagerie laser      Imagerie laser        2011/1/14
Laser imaging. We derive an original direct imaging method of an object. It is based on topological derivatives, and aims at inverting the amplitude of waves that are retropropagated after laser illum...
Noncommutative field theories are a class of theories beyond the standard model of elementary particle physics. Their importance may be summarized in two facts.Firstly as field theories on noncommutat...
Electromagnetic properties of quark-like particles are examined in a classical field model involving extended dual electromagnetic fields. These can have fractional charges and a confining potential t...
A subset E of a metric space (X, d) is totally bounded if and only if any sequence of points in E has a Cauchy subsequence. We call a sequence (xn) statistically quasi-Cauchy if st − limn!1 d(xn...
In a recent paper (Ant´on et al. 2010) we have derived sets of right and left eigenvectors of the Jacobians of the relativistic MHD equations, which are regular and span a complete basis in any ...
We overcome the barrier of constructing N=4 superconformal models in one space dimension for more than three particles. The D(2, 1; ) superalgebra of our systems is realized on the coordinates and m...
Isoradial graphs are a natural generalization of regular graphs which give,for many models of statistical mechanics, the right framework for studying models at criticality.
We construct a Gibbs measure for the nonlinear Schr¨odinger equation (NLS)on the circle, conditioned on prescribed mass and momentum:dμa,b = Z−1 1 {´T |u|2=a} 1 {i ´T uux=b}e±1 p &a...
Let UTn(q) denote the unitriangular group of unipotent n×n upper triangular matrices over a field with q elements. The numbers which appear as the degrees of the complex irreducible characters of UT...
Supersymmetric heterotic string models, built from a Calabi-Yau threefold X endowed with a stable vector bundle V , usually start from a phenomenologically motivated choice of a bundle Vv in the visib...

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