Essence of Fractional Order Calculus, Physical Interpretation and Applications.- Solution, Stability and Realization of Fractional Order Differential Equation.- Sliding Mode Control of Fractional Order Systems.- Finite Time Stabilization of Fractional Order Systems.- A Soft Variable Structure Control of Fractional Order Systems.- Robust Cooperative Control of Fractional-Order Multiple Agents.- Discrete Sliding Mode Control of Fractional Order systems.- Disturbance Observer based Robust Control for Fractional Order Systems.- Contraction Analysis by Integer Order and Fractional Order Infinitesimal Variations.