共查询到20条相似文献,搜索用时 763 毫秒
1.
巫世权 《应用数学学报(英文版)》1996,(4)
SOMEGREEDYt-INTERSECTINGFAMILIESOFFINITESEQUENCES¥WUSHIQUAN(巫世权)(DepartmentofMathematics,NationalUniversityofTechnology,Chang... 相似文献
2.
关于热传导-对流问题的有限元方法分析 总被引:4,自引:1,他引:3
关于热传导-对流问题的有限元方法分析沈树民(苏州大学)THEFINITEELEMENTANALYSESFORTHECONDUCTION-CONVECTIONPROBLEMS¥ShenShu-min(SuzhouUniversity)Abstract:... 相似文献
3.
关于热传导-对流问题的有限元方法分析沈树民(苏州大学)THEFINITEELEMENTANALYSESFORTHECONDUCTION-CONVECTIONPROBLEMS¥ShenShu-min(SuzhouUniversity)Abstract:... 相似文献
4.
杜雪堂 《应用数学学报(英文版)》1995,11(2):214-224
SOMEKINDSOFLIAPUNOVFUNCTIONALINSTABILITYTHEORYOFRFDEDUXUETANG(杜雪堂)(DepartmentofMathematics,HunanNormalUniversity,Changsha4100... 相似文献
5.
无界区域非重叠区域分解算法的离散化及其收敛性 总被引:15,自引:5,他引:15
无界区域非重叠区域分解算法的离散化及其收敛性余德浩(中国科学院计算数学与科学工程计算研究所)DISCRETIZATIONOFNON-OVERLAPPINGDOMAINDECOMPOSITIONMETHODFORUNBOUNDEDDOMAINSANDI... 相似文献
6.
杜明笙 《应用数学学报(英文版)》1995,11(3):268-279
FINITEDIFFERENCESCHEMESOFTHENONLINEARPSEUDO-PARABOLICSYSTEMDUMINGSHENG(杜明笙)(InstituteofAppliedPhysicsandComputationalMathemat... 相似文献
7.
YANG BENFU 《高校应用数学学报(英文版)》1994,9(3):291-297
USINGFINITEGEOMETRIESTOCONSTRUCT3-PBIB(2)DESIGNSAND3-DESIGNS¥YANGBENFU(DepartmentofMathematics,ChengduTeachersCollege,Chengdu... 相似文献
8.
ACRITERIONOFRECURRENCEFORBIRTH-DEATHCHAINSOFORDER2ANDRELATEDPROBLEMSINRANDOMENVIRONMENTDingWanding(丁万鼎)WangRongming(汪荣明)(Dept... 相似文献
9.
一类抛物-椭圆耦合方程组混合初边值问题的二阶收敛差分格式Ⅰ 总被引:5,自引:0,他引:5
一类抛物-椭圆耦合方程组混合初边值问题的二阶收敛差分格式Ⅰ孙志忠(东南大学数学力学系)ASECOND-ORDERDIFFERENCESCHEMEFORTHEMIXEDINITIAL-BOUNDARYVALUEPROBLEMOFACLASSOFPARA... 相似文献
10.
一类抛物-椭圆耦合方程组混合初边值问题的二阶收敛差分格式Ⅰ 总被引:3,自引:1,他引:2
一类抛物-椭圆耦合方程组混合初边值问题的二阶收敛差分格式Ⅰ孙志忠(东南大学数学力学系)ASECOND-ORDERDIFFERENCESCHEMEFORTHEMIXEDINITIAL-BOUNDARYVALUEPROBLEMOFACLASSOFPARA... 相似文献
11.
The two-dimensional Helmholtz differential equation governs vibrational problems for a thin membrane and is therefore well studied. Analytical solutions are limited to particular domain shapes, so that in general numerical methods are used when an arbitrary domain is considered. In this paper, a quasi-analytical solution is proposed, suitable to be applied to an arbitrary domain shape. Concretely, the Helmholtz equation is transformed to account for a conformal map between the shape of the physical domain and the unit disk as canonical domain. This way, the transformed Helmholtz equation is solved exploiting well known analytical solutions for a circular domain and the solution in the physical domain is obtained by applying the conformal map. The quasi-analytical approach is compared to analytical solutions for the case of a circular, elliptic and squared domain. 相似文献
12.
Andrew J. Hetzel 《代数通讯》2013,41(11):4157-4165
In this article, we develop equivalent conditions for a certain class of monoidal transform to inherit either the property of being a completely integrally closed domain that satisfies the ascending chain condition on principal ideals, the property of being a Mori domain, the property of being a Krull domain, or the property of being a unique factorization domain, respectively. Such a class of monoidal transform is given in terms of an (analytically) independent set that forms a prime ideal in the base domain. Characterizations are provided illustrating the necessity of the “prime ideal” hypothesis when the base domain is a Noetherian unique factorization domain. 相似文献
13.
Antonio Di Nola 《代数通讯》2013,41(3):1017-1048
It is known that an atomic right LCM domain need not be a UFD but is a projectivity-UFD if it is also modular. This paper studies a slightly weaker and easier condition, the RAMP (acronym for the property in the title) , which also ensures that an atomic right LCM domain will be a projectivity-UFD. Among other things it is shown that in an atomic LCM domain, modularity is equivalent to the pair RAMP and LAMP (the left-right analog of RAMP). This result is then used to show that an atomic LCM domain with conjugation is modular. An example is given of an atomic LCM domain that has neither the RAMP nor the LAMP. All rings are not-necessarily commutative integral domains. Recall that an atomic ring is one in which every nonzero nonunit is a product of atoms (i.e. irreducibles) . A ring R is a right LCM domain if for any two elements a and b in R, aR ∩ bR is a principal right ideal. A right LCM domain need not be a left LCM domain [3] . If a ring has both properties it is called an LCM domain. It Is known (see Example 2 below) that, unlike the commutative case, an atomic right LCM domain need not be a UFD (unique factorization domain). In [1] it is shown that if the ring is also modular then it is a projectivity-UFD (definition of the latter recalled below) 相似文献
14.
作为John域的推广,本文定义了弱John域,并讨论了弱John域与拟圆、弱John域与拟共形 映射之间的关系,得到(1)若(?)。中的Jordan域D和它的外部 均是弱John域,则D 是拟圆;(2)R2中的弱John域是拟共不变的;(3)R2中的有界拟圆必是弱John域.最后构造例子 说明R2中的无界拟圆不一定是弱John域. 相似文献
15.
A uniformly John domain is a domain intermediate between a John domain and a uniform domain. We determine the Martin boundary of a uniformly John domain D as an application of a boundary Harnack principle. We show that a certain self-similar fractal has its complement as a uniformly John domain. In particular, the complement of the 3-dimensional Sierpiski gasket is a uniform domain and its Martin boundary is homeomorphic to the Sierpiski gasket itself. 相似文献
16.
In this paper, we apply the boundary integral method to the steady rotating Navier–Stokes equations in exterior domain. Introducing
some open ball which decomposes the exterior domain into a finite domain and a infinite domain, we obtain a coupled problem
by the steady rotating Navier–Stokes equations in finite domain and a boundary integral equation without using the artificial
boundary condition. For the coupled problem, we show the existence of solution in a convex set. 相似文献
17.
We prove that, in a domain of elementary divisors, the intersection of all nontrivial two-sided ideals is equal to zero. We
also show that a Bézout domain with finitely many two-sided ideals is a domain of elementary divisors if and only if it is
a 2-simple Bézout domain. 相似文献
18.
This work presents an approximation method for Navier-Stokes equations around a rotating obstacle. The detail of this method is that the exterior domain is truncated into a bounded domain and a new exterior domain by introducing a large ball. The approximation problem is composed of the nonlinear problem in the bounded domain and the linear problem in the new exterior domain. We derive the approximation error between the solutions of Navier-Stokes equations and the approximation problem. 相似文献
19.
Reuven Harmelin 《Israel Journal of Mathematics》1990,70(1):111-128
The purpose of this paper is to investigate the relations among some geometric quantities defined for every hyperbolic plane
domain of any connectivity, each of which measures, in some sense, how much the domain deviates either from a disc, convex
domain, or simply connected domain on one hand, or a punctured domain on the other hand.
Supported by the Landau Center for Mathematical Research in Analysis. 相似文献