Stanzhytskyi O. M., Samoilenko E. A.
Coefficient conditions for existence of an optimal control for systems of differential equations
For systems of ordinary differential equations, we obtain some sufficient conditions of existence of an optimal control in terms of their right-hand sides and the cost functional with the use of compactness methods. In the theorems proven, either the time interval is finite and a solution belongs to some domain or the time interval coincides with the semiaxis.