On the Riesz basis property of root vectors system for $2\times 2$ Dirac type operators

Anton A. Lunyov, Mark M. Malamud

The paper is concerned with the Riesz basis property of a boundary value problem associated in $L^2[0,1]\otimes {\mathbb{C}}^2$ with the following $2\times 2$ Dirac type equation $…