共查询到20条相似文献,搜索用时 671 毫秒
1.
1.G.M.Zaslavskyetc.[1]consideredamotionequationofchargedparticleinamagneticfieldwhichhasthefolowingform¨r=emE(x,t)+emc[r,B0],... 相似文献
2.
EQUISTABILITY OF THE MATRIX DIFFERENTIAL EQUATIONS 总被引:5,自引:0,他引:5
1IntroductionIn[1],theideasofageneralizedmatrixvaluednormandmatrixLyapunovfunctionshavebenproposedandthemaincompairsontheore... 相似文献
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FortheNon-R.N.A.FDE,therearewideapplications[1].Theseequationsshowanimpartantcharacter,whichbothpositiveandnegativedelayactas... 相似文献
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1IntroductionThepurposeofthispaperistoextendsomeoscilationresultsofthepapers[1,2]totheneutralhyperbolicdiferentialequationoft... 相似文献
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§1 IntroductionAbasisofcubicpolynomialwasinroducedbyBallin1974[1,2].Twodifferentgeneral-izedBallbasesofhighdegreewerederivedbyWangandSaidin1987and1989indepen-dently[3~7].ThegeneralizedBallcurvespossessthesameshape-preservingpropertiesastheBe′ziercurv… 相似文献
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ThispapergivesanewversionofatheoremofMitioNagumo[3],concerningthepositiveinvarianceofasetwithrespecttothediferentialequation(... 相似文献
7.
Ding Yanheng 《数学年刊B辑(英文版)》1998,19(2):167-178
§1.IntroductionandMainResultsThispaperisanextensionofthework[8].Weconsidertheexistenceofinfinitelymanyhomoclinicorbitsforthef... 相似文献
8.
§1. IntroductionThecommonchemostatmodelhasbeenconsideredbymanymathematians(see[1]).Chemostatmodelsincorporatingdiscretetimedelayhavebeeninvestigatedin[2]and[3].In[4]and[5],chemostatmodelswithcontinuoustimedelayinnutrientrecyclingwereconsid-ered.Inthi… 相似文献
9.
Li Yangrong 《数学年刊B辑(英文版)》1998,19(3):349-358
§1.IntroductionRecentlythetheoryofCsemigroupshasextensivelydevolopoedbymanyauthors(see[2-8,14]),butanaturalandimportantquest... 相似文献
10.
SocaltheBerlinskitheoremforplanarquadraticSystem(QS)is:TheoremA[1]SupposethataQShas4finitecriticalpoints(CPs),Ifthequadrila... 相似文献
11.
《高校应用数学学报(英文版)》1999,(1)
§1IntroductionMuchatentionhasbeendevotedtothenonlinearSchrodingerequations[1~3].Thisbe-causemanyphysicalphenomenacanbedescrib... 相似文献
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1IntroductionTheinfinitesimalHilbert-16thproblem,posedbyV.I.Arnold[1],istogiveanestimateZ(m,n)ofthenumberofzerosofAbelianinte... 相似文献
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§1. IntroductionInordertoresearchthelogicalsystemwhosepropositionalvalueisgiveninalattice,XuY.[Xu2]proposedtheconceptoflatticeimplicationalgebraanddiscusseditssomeproper-tiesin[Xu1]and[Xu2].Also,in[XQ1],XuY.togetherwithK.Y.Qindiscussedtheprop-ertieso… 相似文献
14.
Weconsiderthequadraticsystemoftype(I)m=0acordingtotheclasificationof[1].Withoutlosofgenerality,wemayasumethatthesystemistaken... 相似文献
15.
§1. IntroductionItiswellknownthatthedegreetheoryforak-set-contractoperatorhasmanyapplicationsontheexistenceofthesolutionsofsomeequations(see[1],[2],[3]).However,someopera-torsarenotk-set-contractoperators.Itisanewproblemthatweestablishadegreetheoryfo… 相似文献
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1IntroductionThesocaledVolterapradator-preymodelwithundercrowdingefect[1]isasystemintheformofx=ax(x-L)(k-x)-bxy,y=-cy+dxy-αy2... 相似文献
17.
§1. IntroductionSiddiqiandAnsari[4]developediterativealgorithmsforfindingapproximatesolutiontonewclassesofquasivariationalinequalitiesinHilbertspaces,HassouniandMoudafi[1]extendthemainideasofpaper[4]tomoregeneralcases,whichconsideredaclassofvariation… 相似文献
18.
Sun Jianhua 《数学季刊》1998,(3)
LetRbeaG-gradedringwithidentity1;thatisRg∈GRgandRgRhRghforallg,h∈G.TheassociativeringR#GdenotesthesmashproductforthegroupGandthegradedringR(see[3]or[4]).In[1],CohenandMontgomeryprovedthedualityTheoremsforactionsandcoactionsforfinitegroupG.In[2],af… 相似文献
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1IntroductionInthispaper,westudyoperatorsgeneratedbyVoltera-Stieltjesintegrodiferentialexpresionsτoftheformτ[y](x)≡-ddv(x){y′... 相似文献
20.
Thispaperiscontinuationsof[1],westilltousemarksandtermsin[1]andtheothertermsagreewith[2]and[3].LetEandFbetwoHausdorfftopologicalvectorspaces,XE,YFbetwononemptysets,FbethedualspaceofF,A:X→2YandB:Y→2Fbetwoset-valuedmapping,T:Y→Xbeinvertible.Inthisp… 相似文献