奇异半线性反应扩散方程组Cauchy问题

本文讨论如下问题其中σ>0,Pi>1,qi>1(i=1,2),α1≥0,α2>0,β1>0,β2≥0,fi(x)(i=1,2)连续有界非负, (f1(x),f2(x))(?)(0,0).给出了非负局部解存在的几个充分条件和解的爆破结果.     

奇异半线性反应扩散方程组Cauchy问题

本文讨论如下问题其中{(б)u/(б)t-(1/tσ)△u=αvp1+β1vp1+f1(x),t>0,x∈RN,(б)u/(б)t-(1/tσ)△v=α2uq2+β2vp2+f2(x),t>0,∈RN,limt→0+u(t,x)=limt→0+v(t,x)=0,x∈Rn,其中σ＞0,pi＞1,qi＞1(i=1,2),α1≥0,α2＞0,β1＞0,β2≥0,fi(x)(i=1,2)连续有界非负,(f1(x),f2(x))(≡／)(0,0).给出了非负局部解存在的几个充分条件和解的爆破结果.     

ON THE CONVERGENCE OF APPROXIMATION TO CAUCHY SINGULAR INTEGRALS BY WAVELETS

本文讨论了用周期小波对Ｈｏ．．ｌｄｅｒ空间进行的特征刻划，给出了Ｈｏ．．ｌｄｅｒ空间中的若干小波逼近性质，证明了用周期小波逼近Ｃａｕｃｈｙ型奇异积分时的一些收敛定理．     

ON THE CAUCHY PROBLEM FOR A SINGULAR INTEGRODIFFERENTIAL EQUATION

The authors establish the existence and uniqueness of global solutions to the Cauchy problem for the third-order Benjamin-Ono equation by the so-called continuation method.     

圆周上带希尔伯特核的柯西奇异积分方程的数值解(英文)

本文研究了圆周上带希尔伯特核的柯西奇异积分的复合梯型公式.利用连续的分片线性函数逼近被积函数,得到积分公式的误差估计;然后用积分公式构造求解对应奇异积分方程的两种格式;最后给出数值实验验证理论分析结果.     

ON THE CAUCHY PROBLEM FOR AW-RASCLE SYSTEM WITH LINEAR DAMPING

The existence of global BV solutions for the Aw-Rascle system with linear damping is considered.In order to get approximate solutions we consider the system in Lagrangian coordinates,then by using the wave front tracking method coupling with and suitable splitting algorithm and the ideas of[1]we get a sequence of approximate solutions.Finally we show the convergence of this approximate sequence to the weak entropic solution.     

SINGULAR INTEGRAL DIFFERENTIAL EQUATIONS WITH BOTH CAUCHY KERNEL AND CONVOLUTION KERNEL AND RIEMANN BOUNDARY VALUE PROBLEM

In this paper, we set up and discuss a kind of singular integral differential equation with convolution kernel and Canchy kernel. By Fourier transform and some lemmas, we turn this class of equations into Riemann boundary value problems, and obtain the general solution and the condition of solvability in class {0}.     

奇异半线性非局部反应扩散方程Cauchy问题局部解的存在性

本文讨论如下初值问题局部解的存在性 u/ t- (1/ tσ)Δu =(∫RNuλ(t,y) dy) p /λur + f (x) ,t>0 ,x∈ RNlimt→ 0 + u(t,x ) =0 ,　　　　　　　　　　　　　 x∈ RN其中σ>0 ,λ≥ 1,p≥ 0 ,r≥ 1,p+ r>1,f (x)连续有界非负但不恒等于零 ,Δ是 N维 L aplace算子 ,所得结论推广了文献 [2 ,3]的相应结果     

ON THE CAUCHY PROBLEM OF THEKURAMOTO-SIVASHINSKY EQUATION WITH SINGULAR INITIAL DATA

1IntroductionandMainResultsTheequationwasindependentlyadvocatedbyKuramoto[6]inconnectionwithreaction-diffusionsystems,andbySivashinsky[10]inmodelingflamepropagation.Italsoarisesinthecontextofvisousfilmflow[0]andbifurcatingsolutionsoftheNavier-Stokesequations[2].Obviouslyldifferentiating(1.1)withrespecttox=(xl,'',AN)andsettingu(t,x)=(ul(t,x),''5UN(t,x))"=7W=(W.,l''Iyi'.)",wecanrewrite(l.1)asthefollowingconservedThisistilewell-knownKuramoto-Sivashillsky(KS)equation(Inwhatfollows,wetre…     

THE CAUCHY PROBLEM FOR A NONLINEAR FAST DIFFUSION EQUATION

In this paper, the existence, uniqueness and continuous dependence on initial data for the Cauchy problem of fast diffusion equation is discussed.     

饱和Activator-Inhibitor模型柯西问题的整体解

本文首先证明了饱和Activator－Inhibitor模型柯西问题整体解的存在性，其次考虑到Activator对源密度的反馈效应，又证明了具有反馈的上述模型整体解的存在性．     

Cauchy问题解的不唯一性定理

设P是R~n上常系数m阶齐次线性偏微分算子,m>1,则对于任何给定的正数c、b、ε,下述Cauchy问题 存在非平凡解u,满足     

THE ABSTRACT CAUCHY PROBLEM AND A GENERALIZATION OF THE LUMER-PHILLIPS THEOREM

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｃｅｎｔｌｙｔｈｅｔｈｅｏｒｙｏｆＣｓｅｍｉｇｒｏｕｐｓｈａｓｅｘｔｅｎｓｉｖｅｌｙｄｅｖｏｌｏｐｏｅｄｂｙｍａｎｙａｕｔｈｏｒｓ（ｓｅｅ［２－８，１４］），ｂｕｔａｎａｔｕｒａｌａｎｄｉｍｐｏｒｔａｎｔｑｕｅｓｔ...     

ON THE CAUCHY PROBLEM FOR IMBQ SYSTEM ARISING FROM DNA

In this article, we focus on the Cauchy problem for the generalized IMBq system in n-dimensional space, which arises from DNA. We show the global existence and decay estimates of solution for a class of initial velocity, provided that the initial value is suitably small.     

GLOBAL SOLUTION TO THE CAUCHY PROBLEM ON A UNIVERSE FIREWORKS MODEL

We prove existence and uniqueness of the global solution to the Cauchy problem on a universe fireworks model with finite total mass at the initial state when the ratio of the mass surviving the explosion, the probability of the explosion of fragments and the probability function of the velocity change of a surviving particle satisfy the corresponding physical conditions. Although the nonrelativistic Boltzmann-like equation modeling the universe fireworks is mathematically easy, this article leads rather theoretically to an understanding of how to construct contractive mappings in a Banach space for the proof of the existence and uniqueness of the solution by means of methods taken from the famous work by DiPerna ＆ Lions about the Boltzmann equation. We also show both the regularity and the time-asymptotic behavior of solution to the Cauchy problem.     

一种求解修正的Helmholtz方程Cauchy问题的数值方法

本文研究了无界带形区域Ω={(x,y)|0相似文献   

THE CAUCHY PROBLEM FOR GAS DYNAMIC SYSTEMS IN MULTI-DIMENSINAL SPACE WITH WEAKLY SINGULAR DATA

The Cauchy problem for gas dynamic systems with weakly discontinuous initial data is discussed.Thel local existence of the solution to such problem is proved.Meanwhile,it is shown that the singularities of the solution spread on all characteristic surfaces issuing from the manifold carrying initial singularities.     

四阶Ginzburg-Landau型方程的初值问题

本文研究四阶Ｇｉｎｚｂｕｒｇ－Ｌａｎｄａｕ型方程的初值问题,通过建立一般半线性抛物方程的Ｌτ－解和Ｈｓ－解之间的联系,获得该方程的整体Ｈｓ－解的存在唯一性(ｓ＝１、２)。