Abstract:
We give various conditions for the unique invertibility of the operator d/dt+A(t)d/dt+A(t) in the space of functions bounded on the whole line. The methods we use essentially rely on the almost-periodicity of the operator-function A(t)A(t).
Citation:
V. V. Zhikov, V. M. Tyurin, “The invertibility of the operator d/dt+A(t)d/dt+A(t) in the space of bounded functions”, Mat. Zametki, 19:1 (1976), 99–104; Math. Notes, 19:1 (1976), 58–61