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Under loose conditions, the existence of solutions to initial value problem are studied for second order impulsive integro-differential equation with infinite moments of impulse effect on the positive half real axis in Banach spaces. By the use of recurrence method, Tonelii sequence and the locally convex topology, the new existence theorems are achieved, which improve the related results obtained by Guo Da-jun. 相似文献
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In this paper,we study the global existence of BV solutions of the initial value problem for the isentropic p-system,where the state equation of the gas is given by P=Av-γ.For γ> 1,the general existence result for large initial data has not been obtained.By using the Glimm scheme,Nishida,Smoller and Diperna successively obtained the global existence results for(γ-1)TV(v0(x),u0(x)) being small.In the present paper,by adopting a rescaling technique,we improve th... 相似文献
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陈芳启 《应用数学学报(英文版)》2001,17(3):289-295
1. IntroductionIn paPer l1], Guo Da jun established the eristence of extreme solutions of initnd Vaueproblems fOr first order illtegrodmerelltial eqllations of VOlterra type in Banach spaces.Now, in this paPer, we consider the IVP for second order illtegrodifferelltial equatinns onthe infinite iliterVa R in BanaCh space E:U" = F(t, u,u', Tu), Vt E R , u(0) = xo, u'(0) = x1) (1)where xo,x1 E E,F E C(R x E x E x E,E), and(Tx)(t) = l'k(,,.).(.)d., Vt E R , (2)jok E C(fl, R ), fl… 相似文献
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本文利用Monch不动点定理和一个比较结果,研究了实 Banach空间中二阶非线性混合型脉冲积分-微分方程初值问题解的存在性. 相似文献
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该文对求解非线性耦合Schrodinger方程的Sonnier-Christov格式进行了数值分析, 证明了格式关于L2范数的稳定性和二阶收敛性, 运用Brouwer不动点定理证明了差分解的存在唯一性, 给出一个求解非线性差分方程组的迭代算法并证明了算法的收敛性, 最后对双孤立波的碰撞进行了模拟. 相似文献
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The chaotic dynamics of the transport equation for the L-mode to H-mode near the plasma in a tokamak is studied in detail with the Melnikov method. The transport equations represent a system with external and parametric excitation. The critical curves separating the chaotic regions and nonchaotic regions are presented for the system with periodically external excitation and linear parametric excitation, or cubic parametric excitation, respectively. The results obtained here show that there exist uncontrollable regions in which chaos always take place via heteroclinic bifurcation for the system with linear or cubic parametric excitation. Especially, there exists a controllable frequency, excited at which chaos does not occur via homoclinic bifurcation no matter how large the excitation amplitude is for the system with cubic parametric excitation. Some complicated dynamical behaviors are obtained for this class of systems. 相似文献
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Banach空间非线性二阶微分积分方程初值问题的单调迭代方法 总被引:4,自引:0,他引:4
利用单调迭代方法及Mnch不动点定理,研究了Banach空间中混合单调二阶微分积分方程初值问题的耦合最小最大拟解及解的存在性,给出了耦合最小最大拟解及解的存在定理. 相似文献
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这是一本关于分岔、混沌及其工程应用的专著.书中利用大量的物理和工程中的实例,对非线性系统的许多重要的非线性物理性质作了详尽的阐述.这本优秀科技专著为不同层次的读者提供了大量极富价值的参考文献.还应强调指出:该书适合用作大学生及研究生教材. 相似文献