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In this paper, we develop a Riemann-Hilbert approach to the Cauchy problem for the two-component modified Camassa-Holm (2-mCH) equation based on its Lax pair. Further via a series of deformations to the Riemann-Hilbert problem associated with the Cauchy problem by using the -generalization of Deift-Zhou steepest descent method, we obtain the long-time asymptotic approximations of the solutions of the 2-mCH equation in four space-time regions. Our results also confirm the soliton resolution conjecture and asymptotically stability of the N-soliton solutions for the 2-mCH equation.
Xu et al. (2024) studied this question.