“…Force and form closure, as well as various stability notions and criteria are proposed in [47,22,16,9,48,49,62,68,52,53,33,10,34,51] for object grasping and biped robots. Static equilibrium problems are anaylsed and algorithms are presented [51,52,33,68,49,16,48,9], dynamical effects are taken into account in [47,62,34]. Most of these works rely on the careful study of contact and external wrenches, and yield precise criteria on wrenches and contact points arrangements so that stability or static equilibrium are guaranteed [10,48,49].…”