共查询到20条相似文献,搜索用时 156 毫秒
1.
NON-EXISTENCEOFSINGULARCYCLESINAQUADRICDIFFERENTIALSYSTEMWITHFINEFOCUSOFORDERTHREE¥LUGang;LIANGZhaojun(DeportmentofMathematic... 相似文献
2.
EXISTENCE OF MULTIPLE SOLUTIONS AND BIFURCATIONFOR CRITICAL SEMILINEAR BIHARMONIC EQUATIONS 总被引:3,自引:0,他引:3
DENG Yinbin 《系统科学与复杂性》1995,(4)
EXISTENCEOFMULTIPLESOLUTIONSANDBIFURCATIONFORCRITICALSEMILINEARBIHARMONICEQUATIONSEXISTENCEOFMULTIPLESOLUTIONSANDBIFURCATIONF... 相似文献
3.
YUAN Wenjun 《系统科学与复杂性》1996,(1)
ONTHEEXISTENCEOFMEROMORPHICSOLUTIONSOFALGEBRAICDIFFERENTIALEQUATIONS¥YUANWenjun(DepatmentofMathematics,XinjiangNoormalUnivers... 相似文献
4.
SONG Wen 《系统科学与复杂性》1996,(4)
APPROXIMATIONOFSOLUTIONOFRELAXEDDIFFERENTIALINCLUSIONONCOMPACTSET¥SONGWen(DepartmentofMathematics,HarbinNormalUniversity,Harb... 相似文献
5.
CHEN Xiru 《系统科学与复杂性》1995,(1)
STRONGCONSISTENCYOFM-ESTIMATESOFMULTIPLEREGRESSIONCOEFFICIENTSCHENXiru(GraduateSchooloftheChineseAcademyofSciences,Beijing100... 相似文献
6.
LIU Hailiang 《系统科学与复杂性》1994,(4)
ANEXISTENCETHEOREMFORRADIALPOSITIVESOLUTIONSOFNONLINEARDEGENERATEELLIPTICEQUATIONSLIUHailiang(DepartmentofMathematics,HenanNo... 相似文献
7.
ZHU Yujie 《系统科学与复杂性》1996,(2)
THEEXPONENTIALBOUNDOFTHESURVIVALFUNCTIONESTIMAATORFORRANDOMLYTRUNCATEDANDCENSOREDDATAZHUYujie(HuzhouTeacher'sCollage,Huzhou31... 相似文献
8.
GLOBAL AND LOCAL BIFURCATION IN PERTURBATIONS OF NON-SYMMETRY AND SYMMETRY OF HAMILTONIAN SYSTEM 总被引:3,自引:0,他引:3
LIU Zhengrong 《系统科学与复杂性》1995,(4)
GLOBALANDLOCALBIFURCATIONINPERTURBATIONSOFNON-SYMMETRYANDSYMMETRYOFHAMILTONIANSYSTEM¥LIUZhengrong(InstituteofAppliedMathemati... 相似文献
9.
XU Dachuan 《系统科学与复杂性》1996,(3)
ANEWSUFFICIENTCONDITIONFORTHECONVERGENCEOFTHEDFPALGORITHMWITHWOLFELINESEARCH¥XUDachuan(DepartmentofMathematics,QufuNormalUniv... 相似文献
10.
GUO Baozhu 《系统科学与复杂性》1994,(4)
CRITICALBIRTHORDERRATIOCONTROLANDATTAINABLESETOFADISCRETEAGE-DEPENDENTPARITYPSOGRESSIONPOPULATIONSYSTEMGUOBaozhu(Departmentof... 相似文献
11.
ANALYSISOFBOUNDARYSHAPEOFSOLUTIONSOFNONLINEARPERTURBATIONPROBLEM¥HECheng;ZHANGWeitao(InstituteofSystemsScience,AcademiaSinica... 相似文献
12.
XIANG Xiao ling 《系统科学与复杂性》2000,(1)
1.IntroductionManyphysicalsystems,suchajsthemodynamics,electrodynamics,populationbiology,aregovernedbydifferentialequations,integrodifferentialequationsormoregenerallyfunctionaldifferentialevolutionequationsonBanachspace.Associatedoptimalcontrolprobl... 相似文献
13.
1.IntroductionSupposethattherandomvariablesyi5y2,'',y.areindependentandeachyihasdensity:withrespecttoaa-finitemeasurev,whereb,c,]areknownl'unctions;fiisaknownq-vectordefinedinX,Pistheunknownp-vectorparameterdefinedinB,oiisthenaturalparameter,andaisascaleparameter.Then(1)iscalledtheexponentialfamilynonlinear..dels[2]whicharenaturalextensionofgeneralizedlinearmodelsandnormalnonlinearmodels.Inthispaper,wegeneralizetheasymptoticresultof[1]and[3,4]toexponentialfamilynonlinearmodels.Section2gives… 相似文献
14.
LI Shujie 《系统科学与复杂性》1992,(3)
In references,some authors have succeeded in obtaining existence re-sults of the superlinear wave equation without the assumption of monotonicity forthe nonlinear term.In this paper,we present existence results for this problem byusing local linking idea and improve some previous results. 相似文献
15.
In this paper,we discuss the optimal control of growth rate for a class of population systems governed by nonlinear degenerate parabolic equations.Given an ap-propriate cost functional,we prove the existence of the optimal growth rate and give some necessary conditions for optimal growth rate. 相似文献
16.
ZHAO Zengqin XIE Shuheng 《系统科学与复杂性》1998,(1)
1.IntroductionThepaPers[l-5]studythecoupledfixedp0intsofmixedmonotoneoperatorsinBanachspaces;theyshowusgeneralizationsofthefixedpoillttheoremsonincreasingoperatorsanddecreasingoperators.Applicationsoftheseresultsmaybefoundinmanyfieldsofmathematicssuchasnonlineaxdifferentialequations,illtegralequationsanddynamicprogrammingtheories.Inthispaper,westudytheekistenceofsolutionsandboundarysolutionstoasystem0foperatorequationsinpartialorderingsets.Wegeneralizeandimproveonsomeresultsaboutthecoupledfix… 相似文献
17.
ON SUFFICIENT AND NECESSARY OF EXISTENCE FOR A CLASS OF SINGULAR OPTIMAL STOCHASTIC CONTROL 总被引:5,自引:0,他引:5
LIUKunhui QINMingda LUChuanlai 《系统科学与复杂性》2003,16(4):424-437
We study a class of discounted models of singular stochastic control. In this kind of models, not only the structure of cost function has been extended to some general type, but also the state can be represented as the solution of a class of stochastic differential equations with nonlinear drift and diffusion term. By the various methods of stochastic analysis, we derive the sufllcient and necessary conditions of the existence of optimal control. 相似文献
18.
SUNJingxian ZHANGKemei 《系统科学与复杂性》2003,16(2):229-235
In this paper, the famous Amann three-solution theorem is generalized. Multiplicity question of fixed points for nonlinear operators via two coupled parallel sub-super solutions is studied. Under suitable conditions, the existence of at least six distinct fixed points of nonlinear operators is proved. The theoretical results are then applied to nonlinear system of Hammerstein integral equations. 相似文献
19.
GeniGupur GUOBaozhu 《系统科学与复杂性》2005,18(3):319-339
We discuss a transfer line consisting of a reliable machine, an unreliable machine and a storage buffer. This transfer line can be described by a group of partial differential equations with integral boundary conditions. First we show that the operator corresponding to these equations generates a positive contraction C0-semigroup T(t), and prove that T(t) is a quasi-compact operator. Next we verify that 0 is an eigenvalue of this operator and its adjoint operator with geometric multiplicity one. Last, by using the above results we obtain that the time-dependent solution of these equations converges strongly to their steady-state solution. 相似文献
20.
Hou Xuezhang 《系统科学与系统工程学报(英文版)》1995,(1)
SlidingModeControlinaNonlinearFlexibleRobotSystem¥HouXuezhang(DepartmentofMathematics,NortheastNormalUniversity,Changchun,130... 相似文献