一类对角形拟线性双曲型方程组空间周期解的破裂

In this paper,we discuss the blow-up of periodic solutions to a class of quasilinear hyperbolic systems in diagonal form,and make the accurate estimate of life-span.These results in this paper extend the conclusion[1～3].     

g-Besselian frames in Hilbert spaces

In this paper, we introduce the concept of a g-Besselian frame in a Hilbert space and discuss the relations between a g-Besselian frame and a Besselian frame. We also give some characterizations of g-Besselian frames. In the end of this paper, we discuss the stability of g-Besselian frames. Our results show that the relations and the characterizations between a g-Besselian frame and a Besselian frame are different from the corresponding results of g-frames and frames.     

秩2修正矩阵的秩

In this paper,the authors discuss the relationship in detail between the rank of M in the modified matrix M=A BC~* and the rank of matrix A.The authors do believe the results are useful tools in the modified matrices.     

MELLIN TRANSFORM IN WEAK FUNCTIONS AND M(?)NTS FORMULA

In this paper,the authors introduce some Mellin transforms in weak functionsand discuss their applications to Munts formula of the Riemann zeta-function.     

Approximation of partially smooth functions

In this paper we discuss approximation of partially smooth functions by smooth functions. This problem arises naturally in the study of laminated currents.     

MELLIN TRANSFORM IN WEAK FUNCTIONS AND MUENTS FORMULA

In this paper, the authors introduce some Mellin transforms in weak functions and discuss their applications to Mfints formula of the R.iemann zeta-function.     

MATRIX NORM VERSIONS OF THE KANTOROVICH INEQUALITY AND ITS APPLICATIONS

In this paper we discuss the generalizations of the Kantorovich inequality and obtain some generalized Kantorovich inequalities in the sense of matrix norm. We further illustrate how to use these inequalities to determine the lower bound of relative efficiency of the parameter estimate in linear model.     

楼与群Ⅰ

This is a pedagogical introduction to the theory of buildings of Jacques Tits and to some applications of this theory.This paper has 4 parts.In the first part we discuss incidence geometry,Coxeter systems and give two definitions of buildings.We study in the second part the spherical and affine buildings of Chevalley groups.In the third part we deal with Bruhat-Tits theory of reductive groups over local fields.Finally we discuss the construction of the p-adic flag manifolds.     

再生核空间W22[0,∞)中一类积分-----微分方程精确

In this paper, we discuss the definite solution problem ofintegro-differetial equation, give the exact solution to the definitesolution problem of integro-differential equation in space W22 [0,∞) of reproducing kernel.     

ON LOCAL COMPARABILITY AMONG FAMILIES OF SUB-σ-FIELDS

In this paper,we discuss some basic properties of local comparability,extend the main results of [1] from the case of two-parameter to the case of m-parameter (m any positive integer). We also discuss local comparability in families of sub-σ-fields indexed by Riesz space and its application.