On June 28, 2019, at 12:00 a.m. in Room 478 of IMI, the next meeting of the Differential Equations Seminar will be held. Col. Prof. Dimple Chalishajar, Virginia Military Institute, USA, will deliver a lecture on: EXACT AND TRAJECTORY CONTROLLABILITY OF NONLINEAR AND FRACTIONAL ORDER SYSTEMS: A THEORETICAL AND AN ANALYTICAL APPROACH Abstract. Study of nonlinear systems is important since most of the practical systems are nonlinear in nature. There are different notions of controllability like complete controllability, approximate controllability, exact controllability, partial exact controllability, null controllability, local controllability, etc. A current notion of controllability namely Trajectory controllability (T - controllability) has been introduced as a new direction in the field of control theory. We have discussed T- controllability of the first and second [...]