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An abstract approach to the Robin–Robin method Emil Engström and Eskil Hansen 1 Introduction The nonoverlapping Robin–Robin method, also known as the optimized Schwarz method with Robin transmission conditions, was introduced in [12] and shown to converge when applied to linear elliptic equations. Since then there have been several theoretical results concerning the method for both nonlinear elli

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/EEEHDD28.pdf - 2026-04-21

ERROR BOUNDS FOR FULL SPACE-TIME SPLITTING DISCRETIZATIONS OF SEMI-LINEAR SPDES – WITH A FOCUS ON DG DOMAIN DECOMPOSITIONS MONIKA EISENMANN, ESKIL HANSEN, AND MARVIN JANS Abstract. We consider a fully discretized numerical scheme for parabolic stochastic partial dif- ferential equations with multiplicative noise. Our abstract framework can be applied to formulate a non-iterative domain decompositi

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/EHJ_DD_SPDE.pdf - 2026-04-21

MODIFIED NEUMANN–NEUMANN METHODS FOR SEMI- AND QUASILINEAR ELLIPTIC EQUATIONS ∗ EMIL ENGSTRÖM† AND ESKIL HANSEN‡ Abstract. The Neumann–Neumann method is a commonly employed domain decomposition method for linear elliptic equations. However, the method exhibits slow convergence when applied to semilinear equations and does not seem to converge at all for certain quasilinear equations. We therefore

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/EngstromHansenMNN.pdf - 2026-04-21

Linearly convergent nonoverlapping domain decomposition methods for quasilinear parabolic equations EMIL ENGSTRÖM* AND ESKIL HANSEN Centre for Mathematical Sciences, Lund University, P.O. Box 118, 221 00, Lund, Sweden *Corresponding author: emil.engstrom@math.lth.se We prove linear convergence for a new family of modified Dirichlet–Neumann methods applied to quasilinear parabolic equations, as we

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/Engstrom_Hansen.pdf - 2026-04-21

Page 1 of 22 A variational approach to the sum splitting scheme MONIKA EISENMANN† AND ESKIL HANSEN‡ Centre for Mathematical Sciences Lund University P.O. Box 118 221 00 Lund, Sweden [Received on ; revised on ] Nonlinear parabolic equations are frequently encountered in applications and efficient approximating techniques for their solution are of great importance. In order to provide an effective s

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/PaperEisenmannHansen.pdf - 2026-04-21

Convergence Analysis of the Nonoverlapping Robin–Robin Method for Nonlinear Elliptic Equations CONVERGENCE ANALYSIS OF THE NONOVERLAPPING ROBIN–ROBIN METHOD FOR NONLINEAR ELLIPTIC EQUATIONS∗ EMIL ENGSTRÖM† AND ESKIL HANSEN‡ Abstract. We prove convergence for the nonoverlapping Robin–Robin method applied to non- linear elliptic equations with a p-structure, including degenerate diffusion equations

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/RR_nonlin.pdf - 2026-04-21

Convergence analysis of Lie and Strang splitting for operator-valued differential Riccati equations CONVERGENCE ANALYSIS OF LIE AND STRANG SPLITTING FOR OPERATOR-VALUED DIFFERENTIAL RICCATI EQUATIONS∗ ESKIL HANSEN† , TONY STILLFJORD† , AND TEODOR ÅBERG† Abstract. Differential Riccati equations (DREs) are semilinear matrix- or operator-valued differential equations with quadratic non-linearities.

https://www.maths.lu.se/fileadmin/maths/personal_staff/Eskil_Hansen/Riccati_expsplitt.pdf - 2026-04-21

ECCOMAS Congress 2016 VII European Congress on Computational Methods in Applied Sciences and Engineering M. Papadrakakis, V. Papadopoulos, G. Stefanou, V. Plevris (eds.) Crete Island, Greece, 5–10 June 2016 A STUDY OF MULTIGRID SMOOTHERS USED IN COMPRESSIBLE CFD BASED ON THE CONVECTION DIFFUSION EQUATION Philipp Birken1, Jonathan Bull2, and Antony Jameson3 1Lund University, Centre for the Mathemat

https://www.maths.lu.se/fileadmin/maths/personal_staff/Philipp_Birken/BirkenBullJamesonECCOMAS16.pdf - 2026-04-21

Extrapolation in Time in Thermal Fluid Structure Interaction Philipp Birken, Tobias Gleim, Detlef Kuhl and Andreas Meister Abstract We consider time dependent thermal fluid structure interaction. The re- spective models are the compressible Navier-Stokes equations and the nonlinear heat equation. A partitioned coupling approach via a Dirichlet-Neumann method and a fixed point iteration is employed

https://www.maths.lu.se/fileadmin/maths/personal_staff/Philipp_Birken/BirkenGleimKuhlMeisterCE14.pdf - 2026-04-21

X International Conference on Computational Methods for Coupled Problems in Science and Engineering COUPLED PROBLEMS 2023 M. Papadrakakis, B. Schrefler and E. Oñate (Eds) ON THE CHOICE OF TIME WINDOW LENGTH FOR WAVEFORM ITERATIONS FOR COUPLED PROBLEMS NIKLAS KOTARSKY∗, AND PHILIPP BIRKEN† ∗Center for Mathematical Sciences Lund University Box 118, 22100 Lund, Sweden e-mail: niklas.kotarsky@math.lu

https://www.maths.lu.se/fileadmin/maths/personal_staff/Philipp_Birken/Kotarsky_Birken_Coupled_23.pdf - 2026-04-21

SIAM J. SCI. COMPUT. c\bigcirc 2019 Society for Industrial and Applied Mathematics Vol. 41, No. 5, pp. S86--S105 A MULTIRATE NEUMANN--NEUMANN WAVEFORM RELAXATION METHOD FOR HETEROGENEOUS COUPLED HEAT EQUATIONS\ast AZAHAR MONGE\dagger AND PHILIPP BIRKEN\dagger Abstract. An important challenge when coupling two different time dependent problems is to increase parallelization in time. We suggest a mu

https://www.maths.lu.se/fileadmin/maths/personal_staff/Philipp_Birken/MongeBirkenSISC19.pdf - 2026-04-21

() ECCOMAS Congress 2016 VII European Congress on Computational Methods in Applied Sciences and Engineering M. Papadrakakis, V. Papadopoulos, G. Stefanou, V. Plevris (eds.) Crete Island, Greece, 5–10 June 2016 CONVERGENCE ANALYSIS OF COUPLING ITERATIONS FOR THE UNSTEADY TRANSMISSION PROBLEM WITH MIXED DISCRETIZATIONS Azahar Monge1 and Philipp Birken1 1Centre for Mathematical Sciences Lund Universi

https://www.maths.lu.se/fileadmin/maths/personal_staff/Philipp_Birken/Monge__Birken_-_2016_-_Convergence_analysis_of_coupling_iterations_for_the_unsteady_transmission_problem_with_mixed_discretizations.pdf - 2026-04-21

Research Seminar, Human Rights Studies | Human Rights Studies Research Seminar, Human Rights Studies Link to rss Type of events All events Seminar Events per semester Choose semester spring 2025 autumn 2025 spring 2026 28 Apr 28 April 2026 13:15 to 15:00 Seminar Igor Shoikhedbrod: Alternative Futures of Right(s) in Three “Heterodox Marxists” 6 May 6 May 2026 13:15 to 15:00 Seminar Piers Von Berg "

https://www.mrs.lu.se/en/about-us/calender/seminars/Research%20Seminar,%20Human%20Rights%20Studies/ - 2026-04-21

Person | Human Rights Studies

https://www.mrs.lu.se/en/person/LenaHalldenius/www.linkedin.com/in/lena-halldenius-60a49158/ - 2026-04-21

Igor Shoikhedbrod: Alternative Futures of Right(s) in Three “Heterodox Marxists” | Mänskliga rättigheter 28 apr Igor Shoikhedbrod: Alternative Futures of Right(s) in Three “Heterodox Marxists” 28 april 2026 13:15 till 15:00 Seminarium Igor Shoikhedbrod is an Assistant Professor of Political Theory in the Department of Political Science at St. Francis Xavier University, Canada. He is the author of

https://www.mrs.lu.se/om-oss/kalendarium/seminarieserier/Research%20Seminar,%20Human%20Rights%20Studies/igor-shoikhedbrod-alternative-futures-rights-three-heterodox-marxists/ - 2026-04-21

Person | Mänskliga rättigheter

https://www.mrs.lu.se/person/LenaHalldenius/www.linkedin.com/in/lena-halldenius-60a49158/ - 2026-04-21

Motion till Saco-S rådets årsmöte vid Göteborgs universitet 2025 Ärende: Förslag om facklig organisering och samverkan kring hållbarhets- och klimatfrågor Bakgrund: Klimat- och hållbarhetsfrågorna är högt prioriterade vid Göteborgs universitet, inte minst genom den ambitiösa koldioxidbudget som fastställts av rektor. Samtidigt går omställningen långsamt. Enligt universitetets hållbarhetsredovisnin

https://www.saco.se/contentassets/19f4d52f13cd4c4087a4efc76ef40052/motion-1.pdf - 2026-04-21

Sacos syn på arbets- kraftsinvandring 1 Inledning Reglerna för arbetskraftsinvandring samt migrationsrätten i övrigt genomgår betydande förändringar just nu. Syftet med denna promemoria är att sammanfatta och förtydliga Sacos ståndpunkter i frågan om arbetskraftsinvandring för att på ett så effektivt sätt som möjligt kunna driva ett väl förankrat påverkansarbete gentemot regering och riksdag. Det

https://www.saco.se/contentassets/9d885fbec8874534a0178c7353b90a48/2023-sacos-syn-pa-arbetskraftsinvandring.pdf - 2026-04-21

Protokoll fört vid ordinarie medlemsmöte i Saco-S förening vid Specialpedagogiska skolmyndigheten 2021-02-09 Deltagare: Anki Bergström, Anna Nordesjö, Annalena Jonsson, Anne-Lie Bazzani, Charlotta Müller, Emelia Hedberg, Frida Karlsson, Gun Olsson, Heléne Slivka, Ingrid Mauritsson, Isabelle Nesterud, Jenny Ahinko, Joel Rutschman, Katarina Miiros, Kerstin Helmsjö, Kristina Lasu Ekrot, Kristina Nore

https://www.saco.se/contentassets/9ffcb08ee87844a5af2ed9fc6e2afd74/2021-ordinarie-medlemsmote.pdf - 2026-04-21

Microsoft Word - 2022 Örsmötesprotokoll Protokoll fört vid årsmöte i Saco-S förening vid Specialpedagogiska skolmyndigheten 2022-02-08 Deltagare: Jenny Ahinko, Lena Asklund, Rebecka Axklo, Sofia Bovin, Lena Bruzell, Pia Diephuis Dahne, Petra Eklund, Mattias Eriksson, Mari Garnwall, Kertsin Helmsjö, Lina Jerpö, Karina Johansson, Marina Karlberg, Frida Karlsson, Håkan Karlsson, Maria Kero, Susanne

https://www.saco.se/contentassets/9ffcb08ee87844a5af2ed9fc6e2afd74/20220208-saco-s-arsmote-protokoll.pdf - 2026-04-21