On the Equivalence of Bases Consisting of Root Functionsof Dirac Operators with SeparatedBoundary Conditions

For the Dirac operator on a finite interval with integrable potential and separated boundary conditions and the unperturbed operator with zero potential and the same boundary conditions, we study whether the root function systems of these two operators are equivalent in the scale of Lebesgue spaces. The results obtained are close to the classical theorems proved at the end of the last century by A.M. Gomilko, G.V. Radzievskii, and A.M. Sedletskii.