Carsten Trunk

activity

20122024

most citedDiscrete Schrodinger equation on graphs: An effective model for branched quantum lattice

34 citations · 36 across the 6 of their papers we have counts for

collaborators

Showing 2014Show all

2 papers · 1 filter

math.SP2014

Spectral Points of Type $π_{+}$ and Type $π_{-}$ of Closed Operators in Indefinite Inner Product Spaces

Friedrich Philipp, Carsten Trunk

We introduce the notion of spectral points of type $π_{+}$ and type $π_{-}$ of closed operators $A$ in a Hilbert space which is equipped with an indefinite inner product. It is shown t…

math.FA2014

The effect of finite rank perturbations on Jordan chains of linear operators

Jussi Behrndt, Leslie Leben, Francisco Martínez Pería +1

A general result on the structure and dimension of the root subspaces of a matrix or a linear operator under finite rank perturbations is proved: The increase of dimension from the…

Spectral Points of Type π+​ and Type π−​ of Closed Operators in Indefinite Inner Product Spaces

The effect of finite rank perturbations on Jordan chains of linear operators

Spectral Points of Type $π_{+}$ and Type $π_{-}$ of Closed Operators in Indefinite Inner Product Spaces