共查询到20条相似文献,搜索用时 30 毫秒
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YINZHIWEN LIYUANXI 《数学年刊B辑(英文版)》1995,16(4):499-508
This paper gives the definitions and some properties of ε-directional derivate and ε-subgradients of cone-convex function.From them,the optimality conditions of local and global optimal point of unconstrained cone-d.c. programming are gained.At last,the duality theorems of this programming are presented. 相似文献
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OPTIMIZATIONANDDUALITYOFCONE-D.C.PROGRAMMING¥YINZHIWEN;LIYUANXI(DepartmentofStatisticsandOperationsResearch,FudanUniversity,S... 相似文献
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Chen Xiudong Chen Yong 《Annals of Differential Equations》2006,22(2):144-148
We have proved that Lienard equation with F(x) = -F(-x) has at most n limit cycles. Under the condition, an affirmative answer to A.Lins, W.de Melo and C.C.Pugh's conjecture is given. 相似文献
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J. Adolph E. Baldinger I. Gränacher M. Schadt 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1966,17(2):326-329
Zusammenfassung Aus der Temperaturabhängigkeit des Löcherstroms in Anthrazen-Einkristallen wird die Aktivierungsenergie bei verschiedenen Dunkelstromwerten gemessen. Die Aktivierungsenergien liegen zwischen 0,65 eV und 0,95 eV für Ströme von 10–10 bzw. 10–12 Ampère bei Zimmertemperatur.Ferner wird für mehrere Temperaturwerte die Aktivierung der in Haftstellen sitzenden Ladungsträger mit Hilfe von Licht verschiedener Intensität untersucht. 相似文献
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D.T. Busolini 《Journal of Combinatorial Theory, Series B》1978,24(3):286-289
Let α(k, p, h) be the maximum number of vertices a complete edge-colored graph may have with no color appearing more than k times at any vertex and not containing a complete subgraph on p vertices with no color appearing more than h times at any vertex. We prove that and obtain a stronger upper bound for α(k, 3, 1). Further, we prove that a complete edge-colored graph with n vertices contains a complete subgraph on p vertices in which no two edges have the same color if where ei is the number of edges of color i, 1 ≤ i ≤ t. 相似文献
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Derndtl0n1AringRiscalledI-ring,ifasasemigroupRisgeneratedbyitsidemPOtentelements.Defhotl0n2AringRissaidtosatisfyalm0stdescending(0rascending)chaincondi-tionsonleftideals,ifforeverydescending(ascending)chainofleftideals0fR,I,nI2n...nI.Xi..-(I,GI2G...GI'g..-),thereexistsaPOsitiveintegerpsuchthatRPI=Ii(IiGR-'I,)foralli,whereR-'I,={ueRlR'u=IP}.By[5JitisknownthatAringRsatisfiesA.D.C.C(OTA.A.C,C)onleftidealsifandonlyifforeverydescending(0rascending)chalnOfleftidealsofR,I,nI2n-..n… 相似文献
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David Kalaj 《Israel Journal of Mathematics》2017,218(1):67-81
Assume that (N, ?) and (M, S) are two Riemann surfaces with conformal metrics ? and S. We prove that if there is a harmonic homeomorphism between an annulus A ? N with a conformal modulus Mod(A) and a geodesic annulus A S (p, ρ1, ρ2)?M, then we have ρ2/ρ1 ≥ Ψ S Mod(A)2+ 1, where Ψ S is a certain positive constant depending on the upper bound of Gaussian curvature of the metric S. An application for the minimal surfaces is given. 相似文献
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本文主要研究线性差分方程 $A_n(z)f(z+n)+\cdots+A_1(z)f(z+1)+A_0(z)f(z)=0$亚纯解的增长级.当上述方程的系数中没有起控制作用的系数时,我们给出了一些约束条件,得到了一些结果,所得结果部分回答了I. Laine和杨重骏的一个问题. 相似文献
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Deborah Evelyn 《The Journal of the Operational Research Society》1979,30(12):1136-1136
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Allen Weitsman 《Israel Journal of Mathematics》2001,124(1):327-331
Letw=f(z) be a univalent harmonic mapping of the annulus {ρ≤|z|≤1} onto the annulus {σ≤|w|≤1}. It is shown thatσ≤1/(1+(ρ
2/2)(logρ)2). 相似文献
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