共查询到20条相似文献,搜索用时 953 毫秒
1.
Xu You 《数学年刊B辑(英文版)》1995,16(1):43-50
THECAPACITYDENSITYANDTHEHAUSDORFFDIMENSIONOFFRACTALSETS¥XuYou(InstituteofMathematics,FudanUniversity,Shanghai200433,Shanghai,... 相似文献
2.
李大华 《数学物理学报(B辑英文版)》1995,(3)
NONTRIVIALSOLUTIONSOFCOMPETITIVE-DIFFUSIVESYSTEMSWITH SMALLDIFFUSIONLiDahua(Dept.ofMath.,HuazhongUniv.ofSci.&Tech.,Wuhan43007... 相似文献
3.
POSITIVESOLUTIONSOFNEUTRALFUNCTIONALDIFFERENTIALEQUATIONS¥(黄振勋,高国柱)HuangZhenxun(Dept.ofMathematics,FudanUniversity,Shanghai20... 相似文献
4.
有限域上的仿射辛空间及其应用 总被引:4,自引:0,他引:4
本文中,首先给出了有限域Fq上的2v维仿射辛空间ASG(2v,Fq)和2v次仿射辛群ASp2v(Fq)的概念,然后讨论ASp2v(Fq)作用在ASG(2v,Fq)上的可迁性及一些相关的计数定理,最后给出应用仿射辛空间构作结合方案和认证码的例子。 相似文献
5.
6.
(张泽银)(王建忠)ONNECESSARYANDSUFFICIENTCONDITIONSFORDUALSOFWAVELETFRAMES¥ZhangZeyin(Dept.ofMath.,HubaiUniversity,Wuhan430062,China... 相似文献
7.
A CLASS OF SECOND ORDER FUNCTIONAL DIFFERENTIAL INEQUALITIES 总被引:5,自引:0,他引:5
ACLASSOFSECONDORDERFUNCTIONALDIFFERENTIALINEQUALITIES¥ZhangLiqin(张立琴);FuXilin(傅希林)(ShandongNormalUniversity,山东师范大学,邮编:250014)... 相似文献
8.
ASSESSMENTOFLOCALINFLUENCEFORGENERALIZEDCORRELATIONCOEFFICIENTS(陈建宝,陈涛)¥ChenJianbaoChenTao(Dept.ofStatistics,YunnanUniv,Kunmi... 相似文献
9.
赵学雷 《数学物理学报(B辑英文版)》1994,(4)
EXCESSIVEFUNCTIONSOFACLASSOFSUPERPROCESSESZhaoXuelei(赵学雷)(InstituteofMathematics,ShantouUniversity,Shantou515063,China)Abstra... 相似文献
10.
OSCILLATIONSOFODDORDERNEUTRALDIFFERENTIALEQUATIONS朱思铭,彭世国中同大学,邮编:510275OSCILLATIONSOFODDORDERNEUTRALDIFFERENTIALEQUATIONS¥Zhu... 相似文献
11.
A. N. Dranishnikov 《Proceedings of the Steklov Institute of Mathematics》2011,273(1):35-47
M. Gromov asked whether the macroscopic dimension of rationally essential n-dimensional manifolds equals n. We show that the answer depends only on the corresponding group homology class and give an affirmative answer for certain classes. In particular, the answer is positive for manifolds with amenable fundamental groups. 相似文献
12.
Iddo Samet 《Israel Journal of Mathematics》2009,173(1):61-90
Given a countable discrete amenable group G, does there exist a free action of G on a Lebesgue probability space which is both rigid and weakly mixing? The answer to this question is positive if G is abelian. An affirmative answer is given in this paper, in the case that G is solvable or residually finite. For a locally finite group, the question is reduced to an algebraic one. It is exemplified how the algebraic question can be positively resolved for some groups, whereas for others the algebraic viewpoint suggests the answer may be negative. 相似文献
13.
14.
One solves the following problem of M. V. Keldysh: let H be a completely continuous self-adjoint operator acting in a separable Hubert space ?, being a weak perturbation (i.e., the operator S is completely continuous and I+S is invertible); is it true that the operator T will be complete together with H (i.e., the family of its root vectors complete in ?)? The answer is negative. One describes H alloperators, forwhich the answer is positive (for any S): these are those totally positive completely continuous operators H for which where v(t) is the number of eigenvalues of H larger than . 相似文献
15.
The family of pairwise independently determined(PID) systems, i.e., those for which the independent joining is the only self joining with independent 2-marginals, is a class of systems for which the long standing open question by Rokhlin, of whether mixing implies mixing of all orders, has a positive answer. We show that in the class of weakly mixing PID one finds a positive answer for another long-standing open problem, whether the multiple ergodic averages 1/N N-1∑n=0 f_1(T~nx)···f_d(T~(dnx)),N→∞,almost surely converge. 相似文献
16.
We present several extensions of the Brezis–Lions Lemma on removable singularities. We also give a positive answer to a question raised by H. Brezis and M. Marcus about an inverse maximum principle for the Laplacian. 相似文献
17.
R. Balasubramanian M. Langevin T. N. Shorey M. Waldschmidt 《Monatshefte für Mathematik》1996,121(4):295-307
In this paper we consider an analogue of the problem of Erds and Woods for arithmetic progressions. A positive answer follows from theabc conjecture. Partial results are obtained unconditionally. 相似文献
18.
V. V. Makeev 《Vestnik St. Petersburg University: Mathematics》2016,49(2):119-121
Is it true that any set of n + 1 points in Rn can be isometrically embedded into any n-dimensional real normed apace? For n ≥ 3, the answer to this question is unknown to the author of this paper. For n = 2, it is clear that the answer is positive. For n = 3, the problem is reduced to the case where four points lie in a plane. A certain reduction is assigned for arbitrary n. 相似文献
19.
《Journal of Functional Analysis》2005,218(2):395-408
We show that each reflexive finite-dimensional subspace of operators is hyperreflexive. This gives a positive answer to a problem of Kraus and Larson. We also show that each n-dimensional subspace of Hilbert space operators is -hyperreflexive. 相似文献
20.
This paper gives an affirmative answer to a conjecture given in [10]: the Bernstein basis has optimal shape preserving properties among all normalized totally positive bases for the space of polynomials of degree less than or equal ton over a compact interval. There is also a simple test to recognize normalized totally positive bases (which have good shape preserving properties), and the corresponding corner cutting algorithm to generate the Bézier polygon is also included. Among other properties, it is also proved that the Wronskian matrix of a totally positive basis on an interval [a, ) is also totally positive.Both authors were partially supported by DGICYT PS90-0121. 相似文献