Integrable (3+1)-dimensional generalization for dispersionless Davey--Stewartson system

Abstract: This paper introduces a (3+1)-dimensional dispersionless integrable system, utilizing a Lax pair involving contact vector fields, in alignment with methodologies presented by A. Sergyeyev in 2018. Significantly, it is shown that the proposed system serves as an integrable (3+1)-dimensional generalization of the well-studied (2+1)-dimensional dispersionless Davey-Stewartson system. This way, an interesting new example on integrability in higher dimensions is presented, with potential applications in modern mathematical physics. The work lays the foundation for future research into symmetries, conservation laws, and Hamiltonian structures, offering avenues for further exploration.