Well-defined solvability of a class of functional-differential equations in a Hilbert space (Q1374949)

The subject of the paper is an initial boundary value problem for a certain class of linear differential-difference neutral-type equations, whose coefficients are operator functions with values from the set of unbounded operators acting in a Hilbert space. The author formulates results which refer to unique solvability of this problem. Some assertions may be useful for studying spectrum questions.