27 citations · 113 across the 31 of their papers we have counts for
38 papers
Localisation of pseudospectra on discrete groups
Simon N. Chandler-Wilde, Marko Lindner, Christian Seifert
In this paper we generalise two of the methods and corresponding results from our previous paper ``On spectral inclusion sets and computing the spectra and pseudospectra of bounded…
Strongly continuous and locally equicontinuous families of operators and their relation to bi-continuity
Karsten Kruse, Christian Seifert
We study strongly continuous and locally equicontinuous families of operators on sequentially complete Hausdorff locally convex spaces. In case of Saks spaces, we relate the genera…
Spectral Theory for Schrödinger operators on compact metric graphs with and couplings: a survey
Jonathan Rohleder, Christian Seifert
Spectral properties of Schrödinger operators on compact metric graphs are studied and special emphasis is put on differences in the spectral behavior between different classes of v…
Perturbations of non-autonomous second-order abstract Cauchy problems
Christian Budde, Christian Seifert
In this paper we present time-dependent perturbations of second-order non-autonomous abstract Cauchy problems associated to a family of operators with constant domain. We make use…
A note on the Lumer--Phillips theorem for bi-continuous semigroups
Karsten Kruse, Christian Seifert
Given a Banach space and an additional coarser Hausdorff locally convex topology on we characterise the generators of -bi-continuous semigroups in the spirit of the…
Final state observability estimates and cost-uniform approximate null-controllability for bi-continuous semigroups
Karsten Kruse, Christian Seifert
We consider final state observability estimates for bi-continuous semigroups on Banach spaces, i.e. for every initial value, estimating the state at a final time by taking in…