Novel y-type and hybrid solutions for the (2+1)-dimensional Korteweg–de Vries–Sawada–Kotera–Ramani equation

In this paper, the research object is ( 2 + 1 ) -dimensional Korteweg–de Vries–Sawada–Kotera–Ramani (KdVSKR) equation. After adding new constraint, new solutions which contain y -type molecules are obtained. The process of lump molecules and y -type molecules before and after the collision is studied by long-wave limit method, and the kinetic behavior analysis is given. The interactions between y -type molecules and resonant soliton molecules, y -type molecules and breather molecules are obtained by combining velocity resonance method and mode resonance method, respectively. Finally, a novel hybrid solution containing lump molecule, breather molecule and y -type molecule is given, and the kinetic behavior is shown.