On the radius of spatial analyticity for the Majda-Biello and Hirota-Satsuma systems
arXiv:2509.21095
Abstract
We investigate the persistence of spatial analyticity for solutions to the Majda-Biello and Hirota-Satsuma systems with analytic initial data. This result is the first to establish analyticity persistence in such coupled KdV systems.
To appear in J. Math. Anal. Appl., 16 pages