Mixed control for linear infinite-dimensional systems of fractional order

Problem with a mixed control, start and distributed simultaneously, are considered for time-fractional order evolution equations. The results on the solvability of the mixed control problems for linear non-degenerate and degenerate equations with the Gerasimov — Caputo fractional derivative are obtained. It is shown that at some additional conditions a solution of the considered problem is unique. General results are used for consideration of abstract problems with specific quality functionals. Abstract results of the work are illustrated by the example of a mixed control problem for the time-fractional order system of gravitational-gyroscopic waves.