共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
正态分布的小样本数据的相容性检验理论和方法 总被引:3,自引:0,他引:3
对现有的任意分布的相容性检验理论和方法进行了详细分析和探讨 .指出了现存的一些问题 .并研究了正态分布的小样本容量的相容性检验问题的理论 ,提出了新的检验方法 .检验效果较好 . 相似文献
3.
4.
5.
对Reissner-Mindlin板的Weissman-Taylor有限元逼近进行了误差分析.得到了与板的厚度一致无关的旋度、挠度和剪切应力的最优误差估计.揭示了Weissman-Taylor元与稳定化方法的关系.提出了另外两种与Weissman-Taylor元类似的元. 相似文献
6.
本文研究2+1维的扩展经典Boussinesq系统.首先,研究了系统的Lax对,找出了一个形式十分新颖的带有一个任意函数的Backlund变换.然后,又导出了Lax对的特征函数的生成公式.最后,利用Backlund变换和Lax对特征函数生成公式相结合得出了Lax对的递推求解公式.利用此递推公式,求出了一些Lax对的解. 相似文献
7.
种群系统在受到环境噪声干扰的同时,还会受到环境污染的影响.讨论了具有环境污染的非自治随机Lotka-Volterra模型.通过构造Lyapunov函数证明了系统正周期解的存在性.运用Ito公式和鞅的强大数定律给出了种群灭绝的充分条件.通过数值例子验证了所得到的结论. 相似文献
8.
9.
10.
11.
In this paper, we prove a theorem on the growth of a solution of a linear differential equation. From this we obtain some uniqueness theorems concerning that a nonconstant entire function and its derivatives sharing a small entire function. The results in this paper improve many known results. Some examples are provided to show that the results in this paper are the best possible. 相似文献
12.
《Applied Mathematics Letters》2007,20(1):103-109
In this paper, cellular neural networks with complex deviating arguments are considered. Sufficient conditions for the existence of the periodic solutions are established by using the coincidence degree theorem. The results of this paper are new and complement previously known results. 相似文献
13.
We prove a theorem on the growth of nonconstant solutions of a linear differential equation. From this we obtain some uniqueness
theorems concerning that a nonconstant entire function and its linear differential polynomial share a small entire function.
The results in this paper improve many known results. Some examples are provided to show that the results in this paper are
the best possible. 相似文献
14.
通过利用Banach 空间中的不动点定理和Lyapunov泛函的方法,获得了时滞细胞神经网络概周期解的存在性与全局指数稳定性的新结论. 所获结果在较大程度上改进和推广了已有文献中的相应结果. 相似文献
15.
B-空间上凸函数的若干指数性质 总被引:1,自引:0,他引:1
本文引入且用次梯度集该划Banach空间上凸函数的上、下指数,得到共轭凸函数上、下指数间的完整共轭关系、正齐次凸函数是Minkovski规函数的幂等结果,已有的一维相关结果是本文的特例。 相似文献
16.
In this paper, we study the growth of solutions of a first-order linear differential equation and that of a second-order linear differential equation. From this we obtain some uniqueness theorems of a nonconstant entire function and its first derivative having the same fixed points with the same multiplicities. The results in this paper also improve some known results. Some examples show that the results in this paper are best possible. 相似文献
17.
In this paper,Chebyshev pseudospectral-finite element schemes are proposed for solving three dimensional vorticity equation.Some approximation results in nonisotropic Sobolev spaces are given.The generalized stability and the convergence are proved strictly.The numerical results show the advantages of this method.The technique in this paper is also applicable to other three-dimensional nonlinear problems in fluid dynamics. 相似文献
18.
Ramsey数的性质研究 总被引:2,自引:0,他引:2
本文得出了若干有关Ramsey数性质的结论,这些结论可直接用来推导Ram-sey数的下界公式,也可用来改进已有的Ramsey数的下界结果,本文中定理的证明思路,还能用于研究其它的图论和组合数学问题。 相似文献
19.
研究一类具有混合时滞的中立型Hopfield神经网络概周期解.通过运用指数二分性及不动点定理,获得了其概周期解的存在性与全局指数稳定性的充分条件,所得结果是新的,并且推广和改进了已有文献的相关结果. 相似文献