Mathematical Control and Related Fields: latest papers Latest articles for selected journal Necessary conditions for a weak minimum in a general optimal control problem with integral equations on a variable time interval Andrei V. Dmitruk and Nikolai P. Osmolovskii Fri, 1 Dec 2017 20:00:00 GMT Controllability of fractional dynamical systems: A functional analytic approach Venkatesan Govindaraj and Raju K. George Fri, 1 Dec 2017 20:00:00 GMT A stochastic control problem and related free boundaries in finance nonsmooth and nonconcave over a finite time horizon. The paper aims to develop a new methodology, which is significantly different from those of mixed dynamic optimal control and stopping problems in the existing literature, so as to figure out the manager's best strategies. The problem is first reformulated into a free boundary problem with a fully nonlinear operator. Then, by means of a dual transformation, it is further converted into a free boundary problem with a linear operator, which can be consequently tackled by the classical method. Finally, using the inverse transformation, we obtain the properties of the optimal trading strategy and the optimal stopping time for the original problem. ]]> Chonghu Guan, Xun Li, Zuo Quan Xu and Fahuai Yi Fri, 1 Dec 2017 20:00:00 GMT Time-inconsistent optimal control problems with regime-switching Jiaqin Wei Fri, 1 Dec 2017 20:00:00 GMT Addendum to "A sparse Markov chain approximation of LQ-type stochastic control problems" Ralf Banisch and Carsten Hartmann Fri, 1 Dec 2017 20:00:00 GMT