Abstract In this paper we investigate the two-component nonlinear dispersive wave equation on the real line. We establish a blow-up criterion for the system of coupled equations under certain natural initial profiles. The obtained criterion is only involved in the initial values u₀ (x₀) u 0 x 0 and u₀^ (x₀) u 0 ′ x 0 at a single point x₀ R. x 0 ∈ R.
Gökgöz et al. (2026) studied this question.