Riesz bases of eigenfunctions of 1D Dirac operator with strictly regular boundary condition

One dimensional Dirac operators [equation] considered with L2-potentials [equation] ; and subject to regular boundary conditions bc have discrete spectrum. In this thesis, we study basic properties of Riesz bases, prove existence of Riesz bases consisting of root functions of Dirac operators Lbc subject to strictly regular bc, nd adjoint operator (Lbc), nd all self-adjoint bc, and calculate some special self-adjoint extensions