Original Articles

ON J-SYMMETRIC QUASI-DIFFERENTIAL EXPRESSIONS WITH MATRIX-VALUED COEFFICIENTS

Published in: Quaestiones Mathematicae
Volume 10 , issue 2 , 1986 , pages: 153–164

DOI: 10.1080/16073606.1986.9631600

Author(s): Hilbert Frentzen Fachbereich 6—Mathematik, West-Germany

Keywords: 34825 , 47E05

Abstract

A very general class of quasi-differential expressions which generate J-symmetric operators in Hilbert space is defined with the aid of Green's formula and characterized in terms of the coefficients. Furthermore, the limit-point condition is discussed for not necessarily symmetric expressions.

« EXPANSIONS IN EIGENFUNCTIONS OF A TWO-PARAMETER SYSTEM OF DIFFERENTIAL EQUATIONS

ON A-WEAKLY MPACT OPERATORS »