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61.
本文主要讨论了环R和迭代的斜多项式环T(u)的零化子之间的关系,从而得出在一定条件下,R是Baer环当且仅当T(u)是Baer环。而对于拟-Baer性,只要R是拟Baer环就行了,作为推论我们证明了sl(2)的包络代数和量子包络代数都是拟Baer环。 相似文献
62.
This paper is concerned with the heteroscedastic regression model Y1=g(xi) σiei, (1≤i≤n) under correlated errors ei,where it is assumed that σi^2 =f(ui),the design points (xi,u1)are known and nonrandom, and g and f are unknown functions. Assuming that unobserved disturbances ei are martingale differences. The strong uniform convergence rates and r-th moment uniform convergence rates of wavelet estimator of g are investigated. Also,the strong uniform convergence rates are discussed for wavelet estimator of f. 相似文献
63.
The Markov property of Markov process functionals which are frequently used in economy, finance, engineering and statistic analysis is studied. The conditions to judge Markov property of some important Markov process functionals are presented, the following conclusions are obtained: the multidimensional process with independent increments is a multidimensional Markov process; the functional in the form of path integral of process with independent increments is a Markov process; the surplus process with the doubly stochastic Poisson process is a vector Markov process. The conditions for linear transformation of vector Markov process being still a Markov process are given. 相似文献
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广义组合KdV-mKdV方程的显式精确解 总被引:1,自引:0,他引:1
Abstract. With the aid of Mathematica and Wu-elimination method,via using a new generalizedansatz and well-known Riccati equation,thirty-two families of explicit and exact solutions forthe generalized combined KdV and mKdV equation are obtained,which contain new solitarywave solutions and periodic wave solutions. This approach can also be applied to other nonlinearevolution equations. 相似文献
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WangLijun 《高校应用数学学报(英文版)》2001,16(3):339-344
Abstract. The present paper concerns with the formula of the count of primitive words and ex-changeable primitive words. 相似文献
69.
KorolevVYu ZhaoXuanmin BeningVE 《高校应用数学学报(英文版)》2001,16(3):315-322
Abstract. In this paper, the models of increment distributions of stock price are constructed with two approaches. The first approach is based on limit theorems of random summation. The second approach is based on the statistical analysis of the increment distribution of the logarithms of stock prices. 相似文献
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