@article{article_761048, title={BOUNDEDLY SOLVABILITY OF FIRST ORDER DELAY DIFFERENTIAL OPERATORS WITH PIECEWISE CONSTANT ARGUMENTS}, journal={TWMS Journal of Applied and Engineering Mathematics}, volume={9}, pages={396–403}, year={2019}, author={Al, P. Ipek and Ismailov, Z. I.}, keywords={Boundedly solvable operator,di erential operator with piecewise constant argument,spectrum.}, abstract={Using the methods of operator theory, we investigate all boundedly solvable extensions of a minimal operator generated by rst order delay di erential-operator expression with piecewise constant argument in the Hilbert space of vector-functions at nite interval. Also spectrum of these extensions is studied.}, number={2}, publisher={Işık University Press}