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arXiv 1306.3044math.AP
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谱流上非局部微分算子的Fredholm性质

Fredholm properties of nonlocal differential operators via spectral flow

Gregory Faye, Arnd Scheel

摘要:

建立了一类非局部微分算子的Fredholm性质.使用温和的收敛性和本地化条件的非局部项,我们还展示了如何计算Fredholm指数通过广义谱流,使用交叉数的广义空间特征值。我们说明了可能的应用程序的结果在一个非线性和线性设置。我们首先证明了在具有小空间局部化源项的非局部守恒律中存在小粘性激波。我们还展示了如何我们的结果可以用来研究边缘分叉本征值问题使用Lyapunov-Schmidt减少,而不是间隙引理。

英文摘要:

We establish Fredholm properties for a class of nonlocal differential operators. Using mild convergence and localization conditions on the nonlocal terms, we also show how to compute Fredholm indices via a generalized spectral flow, using crossing numbers of generalized spatial eigenvalues. We illustrate possible applications of the results in a nonlinear and a linear setting. We first prove the existence of small viscous shock waves in nonlocal conservation laws with small spatially localized source terms. We also show how our results can be used to study edge bifurcations in eigenvalue problems using Lyapunov-Schmidt reduction instead of a Gap Lemma.

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