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.
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.
Workshop I
Sep 1 – Sep 5, 2025
Workshop II
Oct 13 – Oct 17, 2025
Workshop III
Dec 8 – Dec 12, 2025
Seminars Scroll to the next upcoming seminar
Recordings
Participants
| Name | University | Country | Arrival and Departure |
|---|---|---|---|
| Sebastian Aland | University: TU Freiberg, HTW Dresden | Country: Germanay | Arrival and Departure: Sep 28 - Oct 10 |
| Sebastian Aland | University: TU Freiberg, HTW Dresden | Country: Germany | Arrival and Departure: Dec 8 - Dec 12 |
| Travis Askham | University: NJIT | Country: United States | Arrival and Departure: Aug 31 - Sep 14 |
| Ludvig af Klinteberg | University: Mälardalen University | Country: Sweden | Arrival and Departure: Aug 27 - Dec 12 |
| Joar Bagge | University: The University of Texas at Austin | Country: United States | Arrival and Departure: Aug 27 - Dec 12 |
| Genming Bai | University: University of Michigan, Ann Arbor | Country: United States | Arrival and Departure: Aug 26 - Dec 12 |
| Lehel Banjai | University: Hariott-Watt U | Country: United Kingdom | Arrival and Departure: Dec 1 - Dec 5 |
| Joshua Bannister | University: University College London | Country: United Kingdom | Arrival and Departure: Oct 21 - Dec 12 |
| Alex Barnett | University: Flatiron Institute | Country: USA | Arrival and Departure: Sep 1 - Sep 19 |
| Nanna Berre | University: Norwegian University of Science and Technology | Country: Norway | Arrival and Departure: Aug 27 - Dec 12 |
| Inga Berre | University: University of Bergen | Country: Norway | Arrival and Departure: Dec 7 - Dec 12 |
| Stefano Berrone | University: Politecnico di Turin | Country: Italy | Arrival and Departure: Sep 7 - Sep 27 |
| Timo Betcke | University: University College London | Country: United Kingdom | Arrival and Departure: Sep 15 - Sep 19 |
| George Biros | University: The University of Texas at Austin | Country: United States | Arrival and Departure: Sep 1 - Sep 8 |
| Daniele Boffi | University: KAUST and Pavia | Country: Saudi Arabia/Italy | Arrival and Departure: Sep 21 - Sep 28 (1st visit) |
| Daniele Boffi | University: KAUST and Pavia | Country: Saudi Arabia/Italy | Arrival and Departure: Oct 10 - Oct 19 (2nd visit) |
| Daniele Boffi | University: KAUST and Pavia | Country: Saudi Arabia/Italy | Arrival and Departure: Dec 5 - Dec 12 (3rd visit) |
| Harald van Brummelen | University: Eindhoven | Country: Netherlands | Arrival and Departure: Sep 26 - Oct 17 (1st visit) |
| Harald van Brummelen | University: Eindhoven | Country: Netherlands | Arrival and Departure: Dec 5 - Dec 12 (2nd visit) |
| Annalisa Buffa | University: EPFL | Country: Switzerland | Arrival and Departure: Sep 8 - Sep 24 |
| Martina Bukač | University: University of Notre Dame | Country: United States | Arrival and Departure: Oct 27 - Nov 5 |
| Erik Burman | University: University College London | Country: United Kingdom | Arrival and Departure: Sep 1 - Oct 20 |
| Steffen Börm | University: Kiel University | Country: Germany | Arrival and Departure: Sep 15 - Sep 19 |
| Donna Calhoun | University: Boise State University | Country: United States | Arrival and Departure: Nov 1 - Dec 12 |
| Stéphianie Chaillat-Loseille | University: CNRS | Country: France | Arrival and Departure: Oct 12 - Oct 24 (1st visit) |
| Stéphianie Chaillat-Loseille | University: CNRS | Country: France | Arrival and Departure: Nov 30 - Dec 12 (2nd visit) |
| Beatrice Crippa | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Aug 27 - Dec 12 |
| Marion Darbas | University: Sorbonne Paris Nord University | Country: France | Arrival and Departure: Oct 12 - Oct 25 |
| Simon Dirckx | University: University of Texas at Austin, | Country: United States | Arrival and Departure: Oct 21 - Dec 5 |
| Charles Elliott | University: University of Warwick | Country: United Kingdom | Arrival and Departure: Sep 24 - Oct 10 |
| Björn Engquist | University: University of Texas at Austin | Country: United States | Arrival and Departure: TBC - TBC |
| Miguel Fernandez | University: INRIA, Paris | Country: France | Arrival and Departure: Sep 3 - Oct 15 |
| Luca Formaggia | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Aug 27 - Sep 12 |
| Daniel Fortunato | University: Flatiron Institute | Country: United States | Arrival and Departure: Aug 27 - Sep 13 (1st visit) |
| Daniel Fortunato | University: Flatiron Institute | Country: United States | Arrival and Departure: Oct 9 - Oct 22 (2nd visit) |
| Fredrik Fryklund | University: Uppsala University | Country: Sweden | Arrival and Departure: Aug 27 - Dec 12 |
| Alessio Fumagalli | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Oct 13 - Oct 17 |
| Pei Fu | University: Nanjing University of Aeronautics and Astronautics | Country: China | Arrival and Departure: Aug 30 - Nov 30 |
| Harald Garcke | University: Regensburg | Country: Germany | Arrival and Departure: Sep 20 - Oct 18 |
| Paola Gervasio | University: University of Brescia. | Country: Italy | Arrival and Departure: Aug 27 - Sep 6 |
| Paola Gervasio | University: University of Brescia. | Country: Italy | Arrival and Departure: Oct 12 - Oct 18 |
| Adrianna Gillman | University: University of Colorado Boulder | Country: United States | Arrival and Departure: Aug 20 - Dec 15 |
| Richard Greene | University: New Jersey Institute of Technology | Country: United States | Arrival and Departure: Aug 27 - Dec 12 |
| Leslie Greengard | University: Flatiron Institute and New York University | Country: United States | Arrival and Departure: Aug 31 - Sep 10 |
| Sven Gross | University: RWTH Aachen | Country: Germany | Arrival and Departure: Oct 19 - Oct 26 |
| Johnny Guzmán | University: Brown University | Country: United States | Arrival and Departure: Nov 8 - Nov 23 |
| Peter Hansbo | University: Jönköping University | Country: Sweden | Arrival and Departure: Aug 27 - Dec 12 |
| Fabian Heimann | University: Univ. College London | Country: United Kingdom | Arrival and Departure: Aug 30 - Oct 10 |
| David Hewett | University: University College London | Country: United Kingdom | Arrival and Departure: Sep 21 - Sep 27 |
| David Hewett | University: University College London | Country: United Kingdom | Arrival and Departure: Nov 2 - Nov 8 |
| Antonio Huerta | University: Polytechnic U | Country: Spain | Arrival and Departure: Aug 31 - Sep 7 |
| Tom Hughes | University: UT Austin | Country: United States | Arrival and Departure: Aug 31 - Sep 6 |
| Guido Kanschat | University: Ruprecht-Karls-Universität Heidelberg | Country: Germany | Arrival and Departure: Sep 20 - Nov 14 |
| Shilpa Khatri | University: University of California, Merced | Country: United States | Arrival and Departure: Aug 27 - Dec 12 |
| Gunilla Kreiss | University: Uppsala University | Country: Sweden | Arrival and Departure: Sep 1 - Dec 10 |
| Ronald Kriemann | University: Max-Planck Institute for the Mathematical Sciences | Country: Germany | Arrival and Departure: Oct 5 - Oct 19 |
| Mats Larson | University: Umeå | Country: Sweden | Arrival and Departure: Sep 1 - Dec 12 |
| Christophe Lehrenfeld | University: University of Göttingen | Country: Germany | Arrival and Departure: Sep 28 - Oct 4 (1st visit) |
| Christophe Lehrenfeld | University: University of Göttingen | Country: Germany | Arrival and Departure: Nov 9 - Nov 15 (2nd visit) |
| Vanessa Lleras | University: Université de Montpellier | Country: France | Arrival and Departure: Sep 21 - Oct 12 (1st visit) |
| Vanessa Lleras | University: Université de Montpellier | Country: France | Arrival and Departure: Nov 30 - Dec 12 (2nd visit) |
| Buyang Li | University: The Hong Kong Polytechnic University | Country: Hong Kong | Arrival and Departure: Sep 15 - Sep 18 |
| Per-Gunnar Martinsson (Org) | University: University of Texas at Austin | Country: United States | Arrival and Departure: Aug 24 - Dec 16 |
| André Massing | University: NTNU | Country: Norway | Arrival and Departure: Oct 5 - Oct 18 |
| André Massing | University: NTNU | Country: Norway | Arrival and Departure: Nov 30 - Dec 12 |
| Eric Michielssen | University: University of Michigan | Country: United States | Arrival and Departure: Aug 28 - Sep 7 |
| Andrea Moiola | University: University of Pavia | Country: Italy | Arrival and Departure: Nov 2 - Nov 9 |
| Eric Neiva | University: Collège de France & CNRS | Country: France | Arrival and Departure: Aug 26 - Dec 12 |
| Nilima Nigam | University: Simon Fraser University | Country: Canada | Arrival and Departure: Aug 26 - Sep 19 |
| Ricardo Nochetto | University: University of Maryland at College Park | Country: United States | Arrival and Departure: Aug 31 - Sep 5 (1st visit) |
| Ricardo Nochetto | University: University of Maryland at College Park | Country: United States | Arrival and Departure: Oct 12 - Oct 17 (2nd visit) |
| Robert Nürnberg | University: University of Trento | Country: Italy | Arrival and Departure: Aug 31 - Sep 6 (1st visit) |
| Robert Nürnberg | University: University of Trento | Country: Italy | Arrival and Departure: Dec 7 - Dec 13 (2nd visit) |
| Maxim Olshanskiy | University: University of Houston | Country: United States | Arrival and Departure: Nov 21 - Dec 11 |
| Michael O'Neil | University: Courant Institute, NYU | Country: United States | Arrival and Departure: Nov 15 - Nov 23 |
| Sheehan Olver | University: Imperial College London | Country: United Kingdom | Arrival and Departure: Oct 20 - Nov 1 |
| Carlos Perez-Arancibia | University: U Twente | Country: Netherlands | Arrival and Departure: Oct 27 - Nov 7 |
| Hannah Potgieter | University: Simon Fraser University | Country: Canada | Arrival and Departure: Aug 27 - Dec 12 |
| Brian Quaife | University: Florida State University | Country: United States | Arrival and Departure: Aug 27 - Sep 26 |
| Alfio Quarteroni (Org) | University: Politecnico di Milano and EPFL Lausanne | Country: Italy/Switzerland | Arrival and Departure: Aug 27 - Sep 13 (1st visit) |
| Alfio Quarteroni (Org) | University: Politecnico di Milano and EPFL Lausanne | Country: Italy/Switzerland | Arrival and Departure: Oct 12 - Oct 20 (2nd visit) |
| Alfio Quarteroni (Org) | University: Politecnico di Milano and EPFL Lausanne | Country: Italy/Switzerland | Arrival and Departure: Dec 7 - Dec 14 (3rd visit) |
| Manas Rachh | University: Flatiron | Country: United States | Arrival and Departure: Nov 27 - Dec 12 |
| Arnold Reusken | University: RWTH Aachen | Country: Germany | Arrival and Departure: Sep 14 - Sep 27 |
| Marie Rognes | University: Simula Research Laboratory | Country: Norway | Arrival and Departure: Sep 1 - Sep 14 |
| Vladimir Rokhlin | University: Yale University | Country: United States | Arrival and Departure: Sep 1 - Sep 7 |
| Ricardo Ruiz-Baier | University: Monash University | Country: Australia | Arrival and Departure: Oct 20 - Dec 12 |
| Tonatiuh Sanchez | University: University Arizona | Country: United States | Arrival and Departure: Oct 27 - Nov 30 |
| Guglielmo Scovazzi | University: Duke University | Country: United States | Arrival and Departure: Oct 5 - Oct 18 |
| Anna Scotti | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Sep 1 - Sep 5 |
| Mansur Shakipov | University: University Park | Country: United States | Arrival and Departure: Oct 18 - Dec 12 |
| Michael Siegel | University: New Jersey Institute of Technology | Country: United States | Arrival and Departure: Aug 26 - Sep 20 |
| Manuel Solano | University: Universidad de Concepción | Country: Chile | Arrival and Departure: Nov 1 - Dec 1 |
| Chiara Sorgentone | University: Sapienza University of Rome | Country: Italy | Arrival and Departure: Aug 27 - Sep 10 (1st visit) |
| Chiara Sorgentone | University: Sapienza University of Rome | Country: Italy | Arrival and Departure: Nov 22 - Dec 12 (2nd visit) |
| Olaf Steinbach | University: TU Graz | Country: Austria | Arrival and Departure: Oct 12 - Oct 18 |
| Bjoern Stinner | University: University of Warwick | Country: United Kingdom | Arrival and Departure: Oct 19 - Dec 12 |
| Qi Sun | University: University of Houston | Country: qisun@unc.edu | Arrival and Departure: Oct 21 - Dec 12 |
| Vanessa Styles | University: University of Sussex | Country: United Kingdom | Arrival and Departure: Sep 24 - Oct 10 |
| Gioana Teora | University: Politecnico di Torino | Country: Italy | Arrival and Departure: Oct 21 - Dec 12 |
| Svetlana Tlupova | University: Farmingdale State College | Country: United States | Arrival and Departure: Oct 20 - Nov 20 |
| Anna Karin Tornberg (Org) | University: KTH Royal Institute of Technology | Country: Sweden | Arrival and Departure: Aug 27 - Dec 12 |
| Dennis Trautwein | University: University of Regensburg | Country: Germany | Arrival and Departure: Sep 7 - Oct 26 |
| Richard Tsai | University: University of Texas at Austin | Country: United States | Arrival and Departure: Aug 31 - Sep 14 (1st visit) |
| Richard Tsai | University: University of Texas at Austin | Country: United States | Arrival and Departure: Oct 11 - Oct 25 (2nd visit) |
| Richard Tsai | University: University of Texas at Austin | Country: United States | Arrival and Departure: Nov 29 - Dec 12 (3rd visit) |
| Carolina Urzua-Torres | University: TU Delft | Country: The Netherlands | Arrival and Departure: Sep 15 - Oct 18 |
| Shravan Veerapaneni | University: University of Michigan | Country: United States | Arrival and Departure: Oct 12 - Oct 18 (1st visit) |
| Shravan Veerapaneni | University: University of Michigan | Country: United States | Arrival and Departure: Nov 23 - Nov 29 (2nd visit) |
| Christian Vergara | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Nov 3 - Nov 16 |
| Axel Voigt | University: TU Dresden | Country: Germany | Arrival and Departure: Aug 27 - Sep 9 (1st visit) |
| Axel Voigt | University: TU Dresden | Country: Germany | Arrival and Departure: Dec 7 - Dec 13 (2nd visit) |
| Heather Wilber | University: University of Washington | Country: United States | Arrival and Departure: Sep 14 - Sep 20 |
| Bobbie Wu | University: University of Massachusetts Lowell | Country: United States | Arrival and Departure: Aug 26 - Sep 10 |
| Jack Xin | University: University of California Irvine | Country: United States | Arrival and Departure: Sep 28 - Oct 11 |
| Sara Zahedi (Org) | University: KTH Royal Institute of Technology | Country: Sweden | Arrival and Departure: Aug 27 - Dec 12 |
| Ganghui Zhang | University: Tsinghua University | Country: China | Arrival and Departure: Sep 3 - Oct 23 |
| Paolo Zunino | University: Politecnico di Milano | Country: Italy | Arrival and Departure: Dec 7 - Dec 14 |
Preprints
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