2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65510In this paper, we study $H^{\infty}$ performance of interval systems. We prove that, for an interval system, the maximal $H^{\infty}$ norm of its sensitivity function is achieved at twelve (out of sixteen) Kharitonov vertices.Optimization and ControlDynamical Systems93B30text