Characterization of self-adjoint domains for regular even order $C$-symmetric differential operators

Abstract

Let $C$ be a skew-diagonal constant matrix satisfying $C^{-1}=-C=C^{\ast}$. We characterize the self-adjoint domains for regular even order $C$-symmetric differential operators with two-point boundary conditions. Thepreviously known characterizations are a special case of this one.

Keywords

• $c$-symmetric
• differential operators
• boundary conditions
• self-adjoint domains