@article{Molyboga_2015, title={Schrödinger Operators with Distributional Matrix Potentials}, volume={67}, url={https://umj.imath.kiev.ua/index.php/umj/article/view/2013}, abstractNote={We study $1D$ Schrödinger operators $L(q)$ with distributional matrix potentials from the negative space $H_{unif}^{− 1} (ℝ, ℂ^{m × m})$. In particular, the class $H_{unif}^{− 1} (ℝ, ℂ^{m × m})$ contains periodic and almost periodic generalized functions. We establish the equivalence of different definitions of the operators $L(q)$, investigate their approximation by operators with smooth potentials $q ∈ L_{unif}^{− 1} (ℝ, ℂ^{m × m})$, and also prove that the spectra of operators $L(q)$ belong to the interior of a certain parabola.}, number={5}, journal={Ukrains’kyi Matematychnyi Zhurnal}, author={Molyboga, V. M.}, year={2015}, month={May}, pages={657–671} }