Interfaces and Unfitted Discretization Methods

August 27 - December 12, 2025

Within this program we wish to gather researchers working with problems involving interfaces/internal boundaries and unfitted discretizations of PDEs from different applications, including researchers working on developing solvers and preconditioners for linear systems. We also include integral equation approaches for applications that do not require a volume grid and numerical methods for the solution of surface PDEs. The focus is on problems with interfaces, in a broad sense. During this scientific program, we aim to span a range of applications as well as a range of different numerical methods, with the important purpose of identifying and investigating joint challenges and possible benefits of cross fertilization.

We will gather a limited group of leading experts within the research area, consisting of approximately 20 invitees together with 10 postdocs, adding up to 30 participants (postdoc stipends covering the full period, including travel and accomodation, will be announced). There will be three main themes during the semester program. The first theme is about formulations and discretizations of interface problems and will start in September; The second theme targets solvers and preconditioners and starts mid October; In the third theme, starting at the end of November, the focus will be on applications and real-world problems. Research seminars and educational seminars will be scheduled throughout the program, in addition to workshops during the tentative weeks of Monday Sep 1, Oct 13 and Dec 8.

There are fellowships available to make it possible for junior researchers (advanced graduate student or recent PhDs) to attend the program, see https://www.mittag-leffler.se/calls/call-for-junior-fellowships/.  Deadline for application is October 31, 2024.

Seminars Scroll to the next upcoming seminar

Participants

Name University Country Arrival and Departure
Sebastian
Aland
University: TU Freiberg, HTW Dresden City: Germanay Arrival and Departure: Sep 28 - Oct 10, 2025
Sebastian
Aland
University: TU Freiberg, HTW Dresden City: Germany Arrival and Departure: Dec 8 - Dec 12, 2025
Travis
Askham
University: NJIT City: United States Arrival and Departure: Aug 31 - Sep 14, 2025
Ludvig
af Klinteberg
University: Mälardalen University City: Sweden Arrival and Departure: Aug 27 - Dec 12, 2025
Lehel
Banjai
University: Hariott-Watt U City: United Kingdom Arrival and Departure: Dec 1 - Dec 5, 2025
Alex
Barnett
University: Flatiron Institute City: USA Arrival and Departure: Sep 1 - Sep 19, 2025
Inga
Berre
University: University of Bergen City: Norway Arrival and Departure: Dec 7 - Dec 12, 2025
Timo
Betcke
University: University College London City: United Kingdom Arrival and Departure: Sep 15 - Sep 19, 2025
George
Biros
University: The University of Texas at Austin City: United States Arrival and Departure: Sep 1 - Sep 8, 2025
Daniele
Boffi
University: KAUST and Pavia City: Saudi Arabia/Italy Arrival and Departure: Sep 21 - Sep 28 (1st visit), 2025
Daniele
Boffi
University: KAUST and Pavia City: Saudi Arabia/Italy Arrival and Departure: Oct 10 - Oct 19 (2nd visit), 2025
Daniele
Boffi
University: KAUST and Pavia City: Saudi Arabia/Italy Arrival and Departure: Dec 5 - Dec 12 (3rd visit), 2025
Harald
van Brummelen
University: Eindhoven City: Netherlands Arrival and Departure: Sep 26 - Oct 17 (1st visit), 2025
Harald
van Brummelen
University: Eindhoven City: Netherlands Arrival and Departure: Dec 5 - Dec 12 (2nd visit), 2025
Annalisa
Buffa
University: EPFL City: Switzerland Arrival and Departure: Sep 8 - Sep 24, 2025
Martina
Bukač
University: University of Notre Dame City: United States Arrival and Departure: Oct 27 - Nov 5, 2025
Erik
Burman
University: University College London City: United Kingdom Arrival and Departure: Sep 1 - Oct 20, 2025
Steffen
Börm
University: Kiel University City: Germany Arrival and Departure: Sep 15 - Sep 19, 2025
Donna
Calhoun
University: Boise State University City: United States Arrival and Departure: Nov 1 - Dec 12, 2025
Stéphianie
Chaillat-Loseille
University: CNRS City: France Arrival and Departure: Oct 12 - Oct 24 (1st visit), 2025
Stéphianie
Chaillat-Loseille
University: CNRS City: France Arrival and Departure: Nov 30 - Dec 12 (2nd visit), 2025
Marion
Darbas
University: Sorbonne Paris Nord University City: France Arrival and Departure: Oct 12 - Oct 25, 2025
Charles
Elliott
University: University of Warwick City: United Kingdom Arrival and Departure: Sep 24 - Oct 10, 2025
Björn
Engquist
University: University of Texas at Austin City: United States Arrival and Departure: TBC - TBC
Miguel
Fernandez
University:  INRIA, Paris City: France Arrival and Departure: Sep 3 - Oct 15, 2025
Luca
Formaggia
University: Politecnico di Milano City: Italy Arrival and Departure: Aug 27 - Oct 7, 2025
Daniel
Fortunato
University: Flatiron Institute City: United States Arrival and Departure: Aug 27 - Dec 12, 2025
Fredrik 
Fryklund
University: Uppsala University City: Sweden Arrival and Departure: Aug 27 - Dec 12, 2025
Alessio
Fumagalli
University: Politecnico di Milano City: Italy Arrival and Departure: Oct 13 - Oct 17, 2025
Harald
Garcke
University: Regensburg City: Germany Arrival and Departure: Sep 20 - Oct 18, 2025
Paola
Gervasio
University: University of Brescia. City: Italy Arrival and Departure: Aug 27 - Sep 6, 2025
Paola
Gervasio
University: University of Brescia. City: Italy Arrival and Departure: Oct 12 - Oct 18, 2025
Adrianna
Gillman
University: University of Colorado Boulder City: United States Arrival and Departure: Aug 20 - Dec 15, 2025
Leslie
Greengard
University: Flatiron Institute and New York University City: United States Arrival and Departure: Aug 31 - Sep 10, 2025
Sven
Gross
University: RWTH Aachen City: Germany Arrival and Departure: Oct 19 - Oct 26, 2025
Johnny
Guzmán
University: Brown University City: United States Arrival and Departure: Nov 8 - Nov 23, 2025
Peter
Hansbo
University: Jönköping University City: Sweden Arrival and Departure: Aug 27 - Dec 12, 2025
David
Hewett
University: University College London City: United Kingdom Arrival and Departure: Sep 21 - Sep 27, 2025
David
Hewett
University: University College London City: United Kingdom Arrival and Departure: Nov 2 - Nov 8, 2025
Antonio
Huerta
University: Polytechnic U  City: Spain Arrival and Departure: Aug 31 - Sep 7, 2025
Tom
Hughes
University: UT Austin City: United States Arrival and Departure: Aug 31 - Sep 6, 2025
Guido
Kanschat
University: Ruprecht-Karls-Universität Heidelberg City: Germany Arrival and Departure: Sep 20 - Nov 14, 2025
Shilpa
Khatri
University: University of California, Merced City: United States Arrival and Departure: Aug 27 - Dec 12, 2025
Balázs
Kovács
University: Paderborn University City: Germany Arrival and Departure: Oct 19 - Oct 26, 2025
Gunilla
Kreiss
University: Uppsala University City: Sweden Arrival and Departure: Sep 1 - Dec 10, 2025
Ronald
Kriemann
University: Max-Planck Institute for the Mathematical Sciences City: Germany Arrival and Departure: Oct 5 - Oct 19, 2025
Mats
Larson
University: Umeå City: Sweden Arrival and Departure: Sep 1 - Dec 12, 2025
Christophe
Lehrenfeld
University: University of Göttingen City: Germany Arrival and Departure: Sep 28 - Oct 4 (1st visit), 2025
Christophe
Lehrenfeld
University: University of Göttingen City: Germany Arrival and Departure: Nov 9 - Nov 15 (2nd visit), 2025
Vanessa
Lleras
University: Université de Montpellier City: France Arrival and Departure: Sep 21 - Oct 12 (1st visit), 2025
Vanessa
Lleras
University: Université de Montpellier City: France Arrival and Departure: Nov 30 - Dec 12 (2nd visit), 2025
Buyang
Li
University: The Hong Kong Polytechnic University City: Hong Kong Arrival and Departure: Sep 15 - Sep 18, 2025
Per-Gunnar
Martinsson (Org)
University: University of Texas at Austin City: United States Arrival and Departure: Aug 24 - Dec 16, 2025
André
Massing
University: NTNU City: Norway Arrival and Departure: Oct 5 - Oct 18, 2025
André
Massing
University: NTNU City: Norway Arrival and Departure: Nov 30 - Dec 12, 2025
Eric
Michielssen
University: University of Michigan City: United States Arrival and Departure: Aug 28 - Sep 7, 2025
Andrea
Moiola
University: University of Pavia City: Italy Arrival and Departure: Nov 2 - Nov 9, 2025
Nilima
Nigam
University: Simon Fraser University City: Canada Arrival and Departure: Aug 26 - Sep 19, 2025
Ricardo
Nochetto
University: University of Maryland at College Park City: United States Arrival and Departure: Aug 31 - Sep 5 (1st visit), 2025
Ricardo
Nochetto
University: University of Maryland at College Park City: United States Arrival and Departure: Oct 12 - Oct 17 (2nd visit), 2025
Robert
Nürnberg
University: University of Trento City: Italy Arrival and Departure: Aug 31 - Sep 6 (1st visit), 2025
Robert
Nürnberg
University: University of Trento City: Italy Arrival and Departure: Dec 7 - Dec 13 (2nd visit), 2025
Maxim
Olshanskiy
University: University of Houston City: United States Arrival and Departure: Nov 21 - Dec 11, 2025
Michael
O'Neil
University: Courant Institute, NYU City: United States Arrival and Departure: Nov 15 - Nov 23, 2025
Sheehan
Olver
University: Imperial College London City: United Kingdom Arrival and Departure: Oct 20 - Nov 1, 2025
Carlos
Perez-Arancibia
University: U Twente City: Netherlands Arrival and Departure: Oct 27 - Nov 7, 2025
Ilaria
Perugia
University: University of Vienna City: Austria Arrival and Departure: Aug 31 - Sep 5, 2025
Brian 
Quaife
University: Florida State University City: United States Arrival and Departure: Aug 27 - Sep 26, 2025
Alfio
Quarteroni (Org)
University: Politecnico di Milano and EPFL Lausanne City: Italy/Switzerland Arrival and Departure: Aug 27 - Sep 13 (1st visit), 2025
Alfio
Quarteroni (Org)
University: Politecnico di Milano and EPFL Lausanne City: Italy/Switzerland Arrival and Departure: Oct 12 - Oct 20 (2nd visit), 2025
Alfio
Quarteroni (Org)
University: Politecnico di Milano and EPFL Lausanne City: Italy/Switzerland Arrival and Departure: Dec 7 - Dec 14 (3rd visit), 2025
Manas
Rachh
University: Flatiron  City: United States Arrival and Departure: Nov 27 - Dec 12, 2025
Arnold
Reusken
University: RWTH Aachen City: Germany Arrival and Departure: Sep 14 - Sep 27, 2025
Marie
Rognes
University: Simula Research Laboratory City: Norway Arrival and Departure: Sep 1 - Sep 14, 2025
Vladimir
Rokhlin
University: Yale University City: United States Arrival and Departure: Sep 1 - Sep 7, 2025
Ricardo
Ruiz-Baier
University: Monash University City: Australia Arrival and Departure: Oct 20 - Dec 6, 2025
Tonatiuh
Sanchez
University: University Arizona City: United States Arrival and Departure: Oct 27 - Nov 30, 2025
Guglielmo
Scovazzi
University: Duke University City: United States Arrival and Departure: Oct 5 - Oct 18, 2025
Anna
Scotti
University: Politecnico di Milano City: Italy Arrival and Departure: Sep 1 - Sep 5, 2025
Michael
Siegel
University: New Jersey Institute of Technology City: United States Arrival and Departure: Aug 26 - Sep 20, 2025
Manuel
Solano
University: Universidad de Concepción City: Chile Arrival and Departure: Nov 1 - Dec 1, 2025
Chiara
Sorgentone
University: Sapienza University of Rome City: Italy Arrival and Departure: Aug 27 - Dec 12, 2025
Olaf
Steinbach
University: TU Graz City: Austria Arrival and Departure: Oct 12 - Oct 18, 2025
Bjoern
Stinner
University: University of Warwick City: United Kingdom Arrival and Departure: Oct 19 - Dec 12, 2025
Vanessa
Styles
University: University of Sussex City: United Kingdom Arrival and Departure: Sep 24 - Oct 10, 2025
Svetlana
Tlupova
University: Farmingdale State College City: United States Arrival and Departure: Oct 20 - Nov 20, 2025
Anna Karin
Tornberg (Org)
University: KTH Royal Institute of Technology City: Sweden Arrival and Departure: Aug 27 - Dec 12, 2025
Richard
Tsai
University: University of Texas at Austin City: United States Arrival and Departure: Aug 31 - Sep 14 (1st visit), 2025
Richard
Tsai
University: University of Texas at Austin City: United States Arrival and Departure: Oct 11 - Oct 25 (2nd visit), 2025
Richard
Tsai
University: University of Texas at Austin City: United States Arrival and Departure: Nov 29 - Dec 12 (3rd visit), 2025
Carolina
Urzua-Torres
University: TU Delft City: The Netherlands Arrival and Departure: Sep 15 - Oct 18, 2025
Shravan
Veerapaneni
University: University of Michigan City: United States Arrival and Departure: Aug 25 - Dec 12, 2025
Christian
Vergara
University: Politecnico di Milano City: Italy Arrival and Departure: Nov 3 - Nov 16, 2025
Axel
Voigt
University: TU Dresden City: Germany Arrival and Departure: Aug 27 - Sep 9 (1st visit), 2025
Axel
Voigt
University: TU Dresden City: Germany Arrival and Departure: Dec 7 - Dec 13 (2nd visit), 2025
Heather
Wilber
University: University of Washington City: United States Arrival and Departure: Sep 14 - Sep 20, 2025
Bobbie
Wu
University: University of Massachusetts Lowell City: United States Arrival and Departure: Aug 26 - Sep 10, 2025
Sara
Zahedi (Org)
University: KTH Royal Institute of Technology City: Sweden Arrival and Departure: Aug 27 - Dec 12, 2025
Paolo
Zunino
University: Politecnico di Milano City: Italy Arrival and Departure: Dec 7 - Dec 14, 2025