Positive operator semigroups

A Bátkai, MK Fijavž, A Rhandi - Operator Theory: advances and …, 2017 - Springer
This book is devoted to positive linear dynamical systems appearing frequently in
mathematical models of various real-life problems. Here we present an operator theoretic …

Semigroups for dynamical processes on metric graphs

M Kramar Fijavž, A Puchalska - … Transactions of the …, 2020 - royalsocietypublishing.org
We present the operator semigroups approach to the first-and second-order dynamical
systems taking place on metric graphs. We briefly survey the existing results and focus on …

Diffusion in networks with time-dependent transmission conditions

W Arendt, D Dier, M Kramar Fijavž - Applied Mathematics & Optimization, 2014 - Springer
We study diffusion in a network which is governed by non-autonomous Kirchhoff conditions
at the vertices of the graph. Also the diffusion coefficients may depend on time. We prove at …

[PDF][PDF] General extrapolation spaces and perturbations of bi-continuous semigroups

C Budde - 2019 - scholar.archive.org
A lot of well-known partial differential equations modeling physical systems, such as the heat
equation, the Schrödinger equation or the wave equation, use temporal change of states …

Bi-continuous semigroups for flows on infinite networks

C Budde, MK Fijavž - arXiv preprint arXiv:1901.10292, 2019 - arxiv.org
We study transport processes on infinite metric graphs with non-constant velocities and
matrix boundary conditions in the $\\mathrm {L}^{\infty} $-setting. We apply the theory of bi …

Schrödinger and Dirac dynamics on time-dependent quantum graph

DS Nikiforov, IV Blinova, IY Popov - Indian Journal of Physics, 2019 - Springer
Quantum graphs with varying edges lengths are constructed. We deal with two types of
operators on the graph edges: the Schrödinger and the Dirac operators. The dynamics of …

Well-posedness of non-autonomous transport equation on metric graphs

C Budde, M Kramar Fijavž - Semigroup Forum, 2024 - Springer
We consider transport processes on metric graphs with time-dependent velocities and show
that, under continuity assumption of the velocity coefficients, the corresponding non …

Well-posedness and long-term behaviour of buffered flows in infinite networks

A Dobrick, FG Martin - arXiv preprint arXiv:2404.14090, 2024 - arxiv.org
We consider a transport problem on an infinite metric graph and discuss its well-posedness
and long-term behaviour under the condition that the mass flow is buffered in at least one of …

-Pseudo almost periodic solutions to some semilinear boundary equations on networks

T Akrid, M Baroun - Afrika Matematika, 2024 - Springer
This work deals with the existence and uniqueness of μ-pseudo almost periodic solutions to
some transport processes along the edges of a finite network with inhomogeneous …

On the asymptotic behaviour of semigroups for flows in infinite networks

A Dobrick - Semigroup Forum, 2022 - Springer
We study transport processes on infinite networks. The solution of these processes can be
modeled by an operator semigroup on a suitable Banach space. Classically, such …