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- W2962912057 abstract "We prove existence and conditional energetic stability of solitary-wave solutions for the two classes of pseudodifferential equationsbegin{equation*}u_t+left(f(u)right)_x-left(L uright)_x=0end{equation*}andbegin{equation*}u_t+left(f(u)right)_x+left(L uright)_t=0,end{equation*}where $f$ is a nonlinear term, typically of the form $c|u|^p$ or $cu|u|^{p-1}$, and $L$ is a Fourier multiplier operator of positive order. The former class includes for instance the Whitham equation with capillary effects and the generalized Korteweg-de Vries equation, and the latter the Benjamin-Bona-Mahony equation. Existence and conditional energetic stability results have earlier been established using the method of concentration-compactness for a class of operators with symbol of order $sgeq 1$. We extend these results to symbols of order $0 < s < 1$, thereby improving upon the results for general operators with symbol of order $sgeq 1$ by enlarging both the class of linear operators and nonlinearities admitting existence of solitary waves. Instead of using abstract operator theory, the new results are obtained by direct calculations involving the nonlocal operator $L$, something that gives us the bounds and estimates needed for the method of concentration-compactness." @default.
- W2962912057 created "2019-07-30" @default.
- W2962912057 creator A5012140544 @default.
- W2962912057 date "2016-03-01" @default.
- W2962912057 modified "2023-09-26" @default.
- W2962912057 title "Existence of solitary-wave solutions to nonlocal equations" @default.
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- W2962912057 doi "https://doi.org/10.3934/dcds.2016.36.3483" @default.
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