{ "id": "1712.07996", "version": "v1", "published": "2017-12-21T15:11:31.000Z", "updated": "2017-12-21T15:11:31.000Z", "title": "Well-posedness and peakons for a higher-order $μ$-Camassa-Holm equation", "authors": [ "Feng Wang", "Fengquan Li", "Zhijun Qiao" ], "comment": "26 pages", "categories": [ "math-ph", "math.MP" ], "abstract": "In this paper, we study the Cauchy problem of a higher-order $\\mu$-Camassa-Holm equation. By employing the Green's function of $(\\mu+\\partial_{x}^{4})^{-1}$, we obtain the explicit formula of the inverse function $(\\mu+\\partial_{x}^{4})^{-1}w$ and local well-posedness for the equation in Sobolev spaces $H^{s}(\\mathbb{S})$, $s>\\frac{7}{2}$. Then we prove the existence of global strong solutions and weak solutions. Moreover, we show that the solution map is H\\\"{o}lder continuous in $H^{s}(\\mathbb{S})$, $s\\geq 4$, equipped with the $H^{r}(\\mathbb{S})$-topology for $0\\leq r