Showing math.FAShow all
2 papers · 1 filter
math.FA2003
On Periodic Matrix-Valued Weyl-Titchmarsh Functions
M. Bekker, E. Tsekanovskii
We consider a certain class of Herglotz-Nevanlinna matrix-valued functions which can be realized as the Weyl-Titchmarsh matrix-valued function of some symmetric operator and its se…
math.FA1998
Some Applications of Operator-Valued Herglotz Functions
Fritz Gesztesy, Nigel J. Kalton, Konstantin A. Makarov +1
We consider operator-valued Herglotz functions and their applications to self-adjoint perturbations of self-adjoint operators and self-adjoint extensions of densely defined closed…