2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/94464The Lax operators of the Benney type equations are studied on the circle. The vectors fields of the Lax operators are showed to commute with each other5 pages, LaTex, no figureExactly Solvable and Integrable SystemsThe Lax operators $\cal L$ of the Benney type equations bound with the circletext