共查询到20条相似文献,搜索用时 78 毫秒
1.
NECESSARYANDSUFFICIENTCONDITIONFOROSCILLATIONOFACLASSOFHIGHERORDERNEUTRALEQUATIONSLinYizhong(林宜中)(FujianNormalUniversity,福建师范... 相似文献
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OSCILLATION OF HIGHER ORDER NEUTRAL DIFFERENTIAL EQUATIONS WITH POSITIVE AND NEGATIVE COEFFICIENTS 总被引:1,自引:0,他引:1
OSCILLATIONOFHIGHERORDERNEUTRALDIFFERENTIALEQUATIONSWITHPOSITIVEANDNEGATIVECOEFFICIENTSLiWantong(李万同)(ZhangyeTeachers'College... 相似文献
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NECESSARY AND SUFFICIENT CONDITIONS FOR OSCILLATIONS OF NEUTRAL DELAY DIFFERENTIAL EQUATIONS WITH SE
NECESSARYANDSUFFICIENTCONDITIONSFOROSCILLATIONSOFNEUTRALDELAYDIFFERENTIALEQUATIONSWITHSEVERALPOSITIVEANDNEGATIVECOEFFICIENTS¥... 相似文献
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OSCILLATIONANDEXISTENCEOFPOSITIVESOLUTIONSFORNEUTRALDIFFERENTIALEQUATIONSShenJianhua(申建华)(HunanNormalUniversity,湖南师范大学,邮编4100... 相似文献
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OSCILLATIONSOFODDORDERNEUTRALDIFFERENTIALEQUATIONS朱思铭,彭世国中同大学,邮编:510275OSCILLATIONSOFODDORDERNEUTRALDIFFERENTIALEQUATIONS¥Zhu... 相似文献
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NECESSARYANDSUFFICIENTCONDITIONSFOREXISTENCEANDUNIQUENESSOFPERIODICSOLUTIONSOFNEUTRALLINEARFUNCTIONALDIFFERENTIALEQUATIONSWIT... 相似文献
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SOMEOSCILLATIONTHEOREMSOFHIGHERORDERNON-HOMOGENEOUSLINEARDIFFERENTIALEQUATIONSWITHTRANSCENDENTALMEROMORPICCOEFFICIENTS¥ChenZo... 相似文献
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OSCILLATIONS OF SOLUTIONS OF NEUTRAL DIFFERENTIAL EQUATIONS WITH VARIABLE COEFFICIENTS AND DELAYS OSCILLATIONSOFSOLUTIONSOFNE... 相似文献
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THE LIMIT CIRCLE CRITERION OF THE SECOND ORDER NONHOMOGENEOUS FUNCTIONAL DIFFERENTIAL EQUATIONS 总被引:2,自引:0,他引:2
THELIMITCIRCLECRITERIONOFTHESECONDORDERNONHOMOGENEOUSFUNCTIONALDIFFERENTIALEQUATIONS¥XuZhiting(徐志庭)&XingHongyan(邢鸿雁)(Guangdon... 相似文献
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THE EXISTENCE AND UNIQUENESS AND STABILITY OF ALMOST PERIODIC SOLUTIONS FOR FUNCTIONAL DIFFERENTIAL EQUATIONS WITH INFINITE DELAYS 总被引:1,自引:0,他引:1
Wang Quanyi 《数学年刊B辑(英文版)》1997,18(2):233-242
THEEXISTENCEANDUNIQUENESSANDSTABILITYOFALMOSTPERIODICSOLUTIONSFORFUNCTIONALDIFFERENTIALEQUATIONSWITHINFINITEDELAYSWANGQUANHNY... 相似文献
11.
利用匹配法研究了一类具有两个转向点的大参数奇摄动方程,通过Liouville-Green变换和Airy函数分别构造了方程在不同区域的外部解和内层解,得出了方程的渐近解,即解在不同范围内的5个渐近表达式及其5对常数之间的4个匹配条件. 相似文献
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本文考虑一类非线性中立型时滞微分方程解的渐近性,给出了方程的解收敛于常数的结果.所得结论改进和推广了文献中的某些已知结果. 相似文献
14.
一类非线性泛函微分方程的渐近性 总被引:2,自引:1,他引:1
本文利用单调半流理论研究一类非线性泛函微分方程的渐近性态,发展了HirschM.W.和SmithH.L.关于常微分方程所得的某些结果. 相似文献
15.
Sufficient conditions are established for the asymptotic behavior of solutionsof nonlinear delay differential equations x′(t)+sum from i=1 to m(pi(t)x(t-т_i))=F(t,x_t),t≥0where 0<т_1<т_2<…<т_m≤r,pi∈C([0,∞)),i=1,2,…,m,F∈C([0,∞)×C_0,R).C_0=C([-r,0],R)equipped with the sup norm ||·|| forsome r>0. A new result is established, some known results are improved. 相似文献
16.
J. Robert Buchanan 《Natural Resource Modeling》1998,11(1):5-19
Averaging methods are used to compare solutions of two-dimensional systems of ordinary differential equations with constant or periodic forcing. The asymptotic separation of solutions of the periodically forced equations from the solutions of the constantly forced equations is proportional to the L1 norm of the periodic forcing terms. This result is applied to population models of Kolmogorov-type with climax fitness functions where forcing represents stocking or harvesting of a population. The asymptotic behavior of such systems may be controlled, to some extent, by varying the period and/or amplitude of the forcing functions. 相似文献
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本文研究了复线性微分方程解的增长性问题.利用两类具有某种渐进增长性质的函数作为线性微分方程的系数,讨论了两类二阶线性微分方程解的增长性,获得了方程解为无穷级.这些结果推广了先前的一些结果. 相似文献
18.
In this paper,we study the asymptotic behavior of solutions to a class of higher order nonlinear integro-differential equations with deviating arguments. And some properties of the oscillatory solutions are given. Our results generalize and improve the previous results. 相似文献
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