{ "id": "1709.06077", "version": "v1", "published": "2017-09-15T19:18:23.000Z", "updated": "2017-09-15T19:18:23.000Z", "title": "Global well-posedness of the generalized KP-II equation in anisotropic Sobolev spaces", "authors": [ "Wei Yan", "Yongsheng Li", "Yimin Zhang" ], "comment": "38pages. arXiv admin note: substantial text overlap with arXiv:1709.01983", "categories": [ "math.AP" ], "abstract": "In this paper, we consider the Cauchy problem for the generalized KP-II equation \\begin{eqnarray*} u_{t}-|D_{x}|^{\\alpha}u_{x}+\\partial_{x}^{-1}\\partial_{y}^{2}u+\\frac{1}{2}\\partial_{x}(u^{2})=0,\\alpha\\geq4. \\end{eqnarray*} The goal of this paper is two-fold. Firstly, we prove that the problem is locally well-posed in anisotropic Sobolev spaces H^{s_{1},\\>s_{2}}(\\R^{2}) with s_{1}>\\frac{1}{4}-\\frac{3}{8}\\alpha, s_{2}\\geq 0 and \\alpha\\geq4. Secondly, we prove that the problem is globally well-posed in anisotropic Sobolev spaces H^{s_{1},\\>0}(\\R^{2}) with -\\frac{(3\\alpha-4)^{2}}{28\\alpha}