Skoči na glavni sadržaj

Glasnik matematički, Vol. 35 No. 1, 2000.

Izvorni znanstveni članak

A class of 2 * 2 - matrix functions

Heinz Langer
Annemarie Luger

Puni tekst: engleski pdf 377 Kb

str. 149-160

preuzimanja: 496

citiraj

Sažetak

For a special class 2 × 2-matrix functions Ω operator representations of Ω(z) and Ω^(z) := - Ω(z) -1 by means of self-adjoint linear relations A and A^ in a Krein space K are given. Since A^ is a 2-dimensional perturbation of A, results of Langer, Markus and Matsaev imply that "singularities of positive type" of Ω remain singularities of positive type of Ω^ with the possible exception of isolated points which have a "finite negative index".

Ključne riječi

Hrčak ID:

4867

URI

https://hrcak.srce.hr/4867

Datum izdavanja:

1.6.2000.

Posjeta: 1.050 *