排序方式: 共有13条查询结果,搜索用时 15 毫秒
1.
2.
3.
1IntroductionInthepresentpaper,weconsiderthefollowingreactiondiffusionequation:at~vAn f(u) A0u g(x)=0,V(x,t)ERxR .(1.1).u(x,0)=u000,VxER,(1.2)andforO=(--n,n)withnEN,otu.~aam. f(,u.) A0u,, g(x)=0,V(x,t)EfixR .(1.3)u.(x,0)=.no.(x),VxeO,(1.4)un(~n,f)=un(n,t)=0,(1.5)whereuandAcarepositivenumbers,g(x)EL'(R),f:R~Risasmoothfunctionwhichsatisfiesf(u)u20,VatER,(1.6)f(0)=0,f,(0)=0,f'(u)2~C,VatER,(1.7)If'(u)I5C(1 fi4lp),p>0,V.uER,(1.8)Inthefollowing,wedenotebyH=L'(R)witlltheusualillnerpro… 相似文献
4.
5.
6.
本文证明了奇异Hamilton包含—↑x∈ρ↓V(x)固定位能的守恒周期解的存在性。这里V:R^N\{0}→R是局部Lipschita连续函数,且在原点带有奇异性。 相似文献
7.
APPROXIMATEINERTIALMANIFOLDSTOTHENAVIER-STOKESEQUATIONS王碧祥兰州大学,邮编:730000APPROXIMATEINERTIALMANIFOLDSTOTHENAVIER-STOKESEQUATIO... 相似文献
8.
Nonlinear Galerkin methods are new schemes for integrating dissipative systems:In the present paper, we obtain the estimates to the rate of convergence of such methods for Kuramoto-Sivashinsky equations. In particular, by an illustrative example, we show that nonlinear Galerkin methods converge faster than the usual Galerkin method. 相似文献
9.
1IntroductionInthepresentpaper,wecollsidertileLandau-LifSllitzequationoftileferromagneticspinchainwhichtakestheform:where"x'ldenotesthevectorcrossproductinR',fi=(--D,D),D>0,u=(ul,u3,u3):fixR -R3istilespinvector,or>0isaGilbertdampingconstant,Pisarealparameter,J=diag(ri,acfac)isaconstantmatrix.TheaboveequationarisesinthedoublyanisotropicHeisenbergspinsystem.Thissystemisimpliedbytileconservationofenergyandmagnitudeofu.SeeDanielandLab.hmanan[1]please.Insomeferromagneticchainsystems,thematri… 相似文献
10.
1.IntroductionInthepreselltpaper)westudythefollowinggeneralizedcomplexGinzburg-Landauequationintwospatialdimensions:anm=pp (1 in)au~(1 lp)Ill'"~ ox,.v(lul'u) p(x,.ac)lul',(1.1)whereallparametersarereal.Thisequation3mostlyconsideredwithor=P=0anda=1,hasalongandbroadhistoryinphysicsasagenericamplitudeequationneartheonsetofinstabilitiesinfluidmechanicalsystems,aswellasinthetheoryofphasetransitionsandsuperconductivity.Inthstspecialcase,theekistenceofsolutionsandtheirlongtimebehaviourhavebeeninves… 相似文献