Acta Mathematica Vietnamica

Acta Mathematica Vietnamica

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Global Existence and Decay Rates of Solutions of Generalized Benjamin–Bona–Mahony Equations in Multiple Dimensions

Hongmei Xu , Guyu Xin

pp. 121-131

Abstract

We study the global existence and decay rates of the Cauchy problem for the generalized Benjamin–Bona–Mahony equations in multi-dimensional spaces. By using Fourier analysis, frequency decomposition, pseudo-differential operators and the energy method, we obtain global existence and optimal $L_2$ convergence rates of the solution.