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非线性双曲型Schrdinger方程L^2整体解的存在性

EXISTENCE OF GLOBAL L^2-SOLUTIONS OF NONELLIPTIC NLS EQUATIONS
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摘要 本文讨论含L2次临界指数非线性项的广义Schrodinger方程柯西问题,用Strichartz不等式和压缩映射原理证明了在L2初值条件下方程有整体解,即u(t)∈C(R,L2(Rn)),而且证明了含L2临界指数非线性项的广义Schrodinger方程有小初值L2整体解. In the present paper the nonelliptic nonlinear Schroedinger (nonelliptic NLS) equation with L^2 subcritical power is studied. An application of Strichartz's inequality to the existence of L^2-global solutions of nonelliptic NLS equation in the subcritical case is given and moreover, such solution u(t) ∈ C(R, H^1(R^n)) if the initial date ψ0 ∈ H^1(R^n).
作者 朱继德
出处 《数学年刊(A辑)》 CSCD 北大核心 2005年第4期495-506,共12页 Chinese Annals of Mathematics
关键词 双曲型Schroedinger方程 柯西问题 Strichartz不等式 整体解 Nonelliptic NLS equation, Cauchy problem, Strichartz's inequality,Global solution
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