The local well-posedness for the dispersion generalized Camassa-Holm equation

Official URL: https://dx.doi.org/10.1080/00036811.2024.2426101

In this paper, we establish the local well-posedness of the Cauchy problem for a dispersion generalized Camassa–Holm equation. The present generalization is obtained by replacing the operator (Formula presented.) of the Camassa–Holm equation with (Formula presented.) where L is a positive differential operator with order p, an even positive integer. We follow Kato's semigroup approach for quasi-linear evolution equations but use L-dependent operators and norms. We show that the Cauchy problem is locally well-posed in a Banach space for which the norms are equivalent to Sobolev space norms and the regularity index has a threshold depending on p. Considering the special cases of the operator L, we verify that our results are consistent with those presented in the literature.