摘要

In this paper, the local well-posedness for the Cauchy problem of a two-component higher-order Camassa-Holm system (2HOCH) is established in Besov spaces B-p,r(s) x B-p,r(s-2) with 1 <= p,r <= + infinity and s > { 2 + 1/p,5/2 } (and also in Sobolev spaces H-s x Hs-2 = B-2,2(s) x B-2,2(s-2) with s > 5/2), which improves the corresponding results for higher-order Camassa-Holm in [7,24,25], where the Sobolev index s = 3, s > 7/2, s >= 7/2 is required, respectively. Then the precise blow-up mechanism and global existence for the strong solutions of 2HOCH are determined in the lowest Sobolev space H-s x Hs-2 with s > 5/2. Finally, the Gevrey regularity and analyticity of the 2HOCH are presented.