A Century of Trefftz Methods

Trefftz methods are numerical techniques for solving differential equations using basis functions that satisfy the underlying equations. This tailored approach often leads to higher efficiency compared to traditional methods.

Marking 100 years since Erich Trefftz’s 1926 seminal paper, this workshop will celebrate a centenary of Trefftz methods and look ahead to the future of Trefftz-inspired research.

The workshop is jointly organized by Christoph Lehrenfeld (University of Göttingen) and Paul Stocker (University of Vienna).

Previous Trefftz workshop was held in 2024 · Oaxaca, Mexico.

Registration

The registration is now open. Extended deadline: July 1, 2026

To register, please fill out the registration form.

Invited Speakers

• Hélène Barucq (INRIA)

• Bruno Després (Sorbonne University)

• Daan Huybrechs (KU Leuven)

• Lise-Marie Imbert-Gérard (University of Arizona)

• Peter Monk (University of Delaware)

• Andrea Moiola (University of Pavia)

• Robert Scheichl (Heidelberg University)

• Virginia Selgas (University of Oviedo)

Confirmed participants

• Tobias Born (University of Ulm)

• Anna Broms (Imperial College London)

• Sergio Gomez (University of Milano-Bicocca)

• Jakub Grabski (Poznan University of Technology)

• Samantha Glory Guiate Simo (University of Göttingen)

• Astrid Herremans (KU Leuven)

• Andrea Lagardere (Airbus)

• Alexei Lozinski (Laboratoire de Mathématiques de Besançon)

• Markus Melenk (TU Wien)

• Armando Maria Monforte (University of Pavia)

• Emile Parolin (Inria)

• Chiara Perinati (University of Pavia)

• Ilaria Perugia (University of Vienna)

• Evan Rabineau (ISAE-Supaero/ONERA)

• Sébastien Tordeux (EPC INRIA Makutu, INRIA-UPPA-CNRS)

• Igor Tsukerman (The University of Akron)

• Tim van Beeck (University of Göttingen)

• Igor Voulis (University of Göttingen)

• Andreas Wurzinger (Graz University of Technology)

• Long Yuan (Shandong University)

• Enrico Zampa (University of Vienna)

• Umberto Zerbinati (University of Oxford)

Location

The workshop takes place at the Campus of the University of Vienna

in the room Aula (see Campus map) located at

Spitalgasse 2, 1090 Vienna. (Google maps)

It is reachable by public transport:

Tram lines 43, 44, 5 stop at Lange Gasse

Timetable

The detailed scientific programme will be announced closer to the workshop. The preliminary structure is as follows.

Time	Monday, 7.9.	Tuesday, 8.9.	Wednesday, 9.9.
08:30–09:00	Registration
09:00–12:00	Morning session incl. coffee break	Morning session incl. coffee break	Morning session incl. coffee break
12:00–14:00	Lunch break self-organized	Lunch break self-organized	Lunch break self-organized
14:00–17:30	Afternoon session incl. coffee break	Afternoon session incl. coffee break	Afternoon session and closing
Evening		Conference dinner

Acknowledgements

We gratefully acknowledge the support of our sponsors: the Austrian Science Fund (FWF) Grant ESP4389824 and the University of Göttingen.



as well as the hospitality of the University of Vienna.