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1.
CO—s闭拓扑   总被引:1,自引:0,他引:1  
Kozae  AM AboK.  AA 《应用数学》1998,11(1):1-4
本文证明,当空间赋予CO-s-闭石扑s(τ)时,s-连续函数概念与连续函数概念一致,研究了s-x闭空间;s-闭空间的某些基本性质,且用其刻画几类CO-s闭拓扑。  相似文献   

2.
Itisknowntoallthatthetheoryofthepoint-countablecoversbeoneofthemostimpor-tantsubjectsinGeneralTopology.Thepoint-countablecoverswithvariouscharacterhavebeendiscussedbymanytopologists,suchasLinandTanaka’spaper[1]onpoint-countableK-network.Inthispaper,w…  相似文献   

3.
袁俭  徐扬 《数学季刊》1998,13(4):35-40
§1. IntroductionIn1995,Mr.XuYang,inhisdoctoraldissertation[1],firstintroducedadoublelattice-or-deredalgebraicstructurecalledl-moduleanddiscusseditsalgebraicandanalyticalproperties,bywhichhedealtwiththeproblemoflattice-valuedgameandsetuptheelementalt…  相似文献   

4.
RLW—Burgers方程的精确解   总被引:6,自引:0,他引:6  
王明亮 《应用数学》1995,8(1):51-55
借助未知函数的变换,RLW-Burgers方程和KdV-Burgers方程化为易于求解的齐次形式的方程,从而得到RLW-Burgers方程和KdV-Burgers方程的精确解。  相似文献   

5.
利用q-超球多项式的两个简单性质,建立了关于q-级数的两个变换公式,借助这些变换公式并结合著名的Rogers-Ramanujan恒等式,给出了若干Rogers-Ramanujan型恒等式的简洁证明。  相似文献   

6.
张力宏 《数学季刊》1998,13(3):12-17
LetRbeacommutativeringwithidentity,τbeahereditarytorsiontheoryonR-mod.Theconceptionswhichwehaveusedinthepapercanbeseenin[1].Definition1 TheringRisτυ-ringifeverysimplemoduleisτ-irjective,theringRisτ-regularringifeveryR-moduleisτ-flat.Zhang[2]studiedτυ…  相似文献   

7.
§1. IntroductionThepurposeofDomainstheory(introducedbyD.Scott)istomodelthedenotationalse-manticsofcomputerprogrammonglanguages[1].Animportantframe-workforthedenota-tionalsemanticsofprogramminglanguagesisthecategoryofL-domainswithstablefunctions.L-dom…  相似文献   

8.
本文讨论Belousov-Zabotinskii化学反应Field-Noyes模型整体吸引子的存在性,维数估计以及性流形的存在性。  相似文献   

9.
周振荣 《数学杂志》1997,17(1):139-142
本文证明了Sasaki空间形式中具有η-平形第二基本形式的η-Einstein-Sasaki子流形在某些假定下由它的谱所决定;并给出了复Quadric上的圆周丛的谱特征。  相似文献   

10.
Piazza;Roberts和Stueckle在1995年猜想:任何一个完全n-部图是严格边-韧性图(strictly edge-tenacious graph) 本文证明了这个猜想.  相似文献   

11.
<正>Submission Authors must use LaTeX for typewriting,and visit our website www.actamath.com to submit your paper.Our address is Editorial Office of Acta Mathematica Sinica,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,P.R.China.  相似文献   

12.
13.
正August 10-14,2015Beijin,China The International Congress on Industrial and Applied Mathematics(ICIAM)is the premier international congress in the field of applied mathematics held every four years under the auspices of the International Council for Industrial and Applied Mathematics.From August 10 to 14,2015,mathematicians,scientists  相似文献   

14.
The present paper investigates the fractal structure of fractional integrals of Weierstrass functions. The ezact box dimension for such functions many important cases is established. We need to point out that, although the result itself achieved in the present paper is interesting, the new technique and method should be emphasized. These novel ideas might be useful to establish the box dimension or Hausdorff dimension (especially for the lower bounds) for more general groups of functions.  相似文献   

15.
English Series     
正1 Aims and Scope Acta Mathematicae Applicatae Sinica(English Series)is a quarterly journal established by the Chinese Mathematical Society.The journal publishes high quality research papers from all branches of applied mathematics,particularly welcomes those from partial differential equations,computational mathematics,applied probability,mathematical finance,statistics,dynamical systems,optimization and management science.  相似文献   

16.
17.
We characterize congruence lattices of standard QBCC-algebras and their connection with the congruence lattices of congruence kernels. Work on the paper was supported by Council of Czech Government No J14/98:153100011.  相似文献   

18.
A new class of sets in ideal topological spaces is introduced and using these sets, a decomposition of continuity is given.   相似文献   

19.
We obtain (a) necessary and sufficient conditions and (b) sufficient conditions for a compact (countably compact) set to be closed in products (sequential products) and subspaces (sequential subspaces) of normal spaces. As a consequence of these, sufficient conditions are obtained for (i) the closedness of arbitrary (countable) union of closed sets and (ii) the equality of the union of the closures and the closure of the union of arbitrary (countable) families of sets in these spaces. It is also shown that these results do not hold for quotients of even T 4,-spaces.  相似文献   

20.
The current paper considers the problem of recovering a function using a limited number of its Fourier coefficients. Specifically, a method based on Bernoulli-like polynomials suggested and developed by Krylov, Lanczos, Gottlieb and Eckhoff is examined. Asymptotic behavior of approximate calculation of the so-called "jumps" is studied and asymptotic L2 constants of the rate of convergence of the method are computed.  相似文献   

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