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arXiv 1004.3885math.APmath.CA
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半线性椭圆型方程解的全纯延拓

Holomorphic extension of solutions of semilinear elliptic equations

Marco Cappiello, Fabio Nicola

摘要:

我们证明了,对于广泛的一类半线性椭圆型微分方程和伪微分方程的$\R^d$,解决方案是充分经常的,并有一定的衰减在无穷远扩展到全纯函数的部门$\mathbb{C}^d$,改善早期的结果,其中的扩展显示为一个带。此外,还证明了这种扩展的解决方案的指数衰减。这些结果特别适用于许多经典非线性发展方程的孤波解。

英文摘要:

We prove, for a wide class of semilinear elliptic differential and pseudodifferential equations in $\R^d$, that the solutions which are sufficiently regular and have a certain decay at infinity extend to holomorphic functions in sectors of $\mathbb{C}^d$, improving earlier results where the extension was shown for a strip. Moreover, exponential decay for such extended solutions is also proved. The results apply, in particular, to solitary wave solutions of many classical nonlinear evolution equations.

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