SYMBIONT has a tradition of informal scientific meetings, which dates back to a Dagstuhl Seminar on Symbolic Methods for Chemical Reaction Networks in 2012. Find here announcements of and practical information on upcoming meetings.

ANR/DFG Project Closing Event

March 14 – March 16, 2022


University of Bonn
Friedrich-Hirzebruch-Allee 8
53115 Bonn

Note: The building is the same as last time, but the street name has changed in honor of Friedrich Hirzebruch. The old address was Endenicher Allee 19A.


0.016 on the ground floor next to the entrance hall


The program runs from Monday, March 14, 2022, 13:00 (1 pm) – Wednesday, March 16, 2022, 12:00 (12 pm).

We will be on site on Monday at 10:00 for early arrivals. We plan to have lunch together before the first presentation, which will start at 13:00 s.t.

We plan to have dinners on both Monday and Tuesday at 19:00.


August 26–27, 2021
Scientific Meeting "Reduction of Reaction Networks with Multiple Time Scales", Aachen, Germany
November 18–22, 2019
Special Focus "Scaling Methods", Bonn, Germany
August 12–16, 2019
Special Focus "Toricity", Bonn, Germany
July 9–13, 2019
Special Focus "Singular Perturbations", Bern, Switzerland
April 4–5, 2019
Scientific Meeting, Paris, France
July 4–5, 2018
ANR/DFG Project Kick-off, Bonn, Germany
March 22–23, 2018
Scientific Meeting, Bonn, Germany
June 1–2, 2017
Funded scientific workshop at the French Embassy, Berlin, Germany
March 14, 2017
Project meeting collocated with BIOSS, Montpellier, France


The schedule can be found here. As usual, the program is complemented with discussion rounds between presentations, and there is room for additional ad-hoc presentations as they fit with the discussions. The presentations take about 15–30 minutes time each.

  • F. Boulier (Lille, France)
    On Denef and Lipshitz (1984) Theorem 3.1: A Decision Procedure Related to Differential Tropical Geometry
  • D. Grivoriev (Lille, France)
    Interpolation of Sparse Functions
  • M. Kschischo (Remagen, Germany)
    Localisation and Reconstruction of Structural Model Errors in Dynamic Systems
  • F. Fages (Saclay, France)
    A Symbolic Computation Pipeline to Compile Mathematical Elementary Functions into Chemical Reaction Networks
  • E. Feliu (Copenhagen, Denmark)
    Monomial Parametrizations for the Steady States of Chemical Reaction Networks
  • F. Lemaire (Lille, France)
    Decoupling Multivariate Fractions
  • C. Lüders (Kassel, Germany)
    Model-Driven Computation of Disjunctive Normal Forms
  • A. Sadeghi Manesh (Coventry, UK)
    Polynomial Superlevel Set Representation of the Multistationarity Region of Chemical Reaction Networks
  • O. Radulescu (Montpellier, France)
    Reduction of Chemical Reaction Networks with Approximate Conservation Laws
  • H. Rahkooy (Saarbrücken, Germany)
    On Toricity/Binomiality of Chemical Reaction Networks
  • S. S. Samal (BASF, Germany)
    Scientific Modeling in Chemical Process Engineering
  • A. Schuppert (Aachen, Germany)
    Mathematical Challenges in Managing COVID-19 Pandemics
  • M. Seiß (Kassel, Germany)
    Singular Initial Value Problems for Quasilinear Ordinary Differential Equations
  • P. Szmolyan (Vienna, Austria)
    Slow Manifolds Caused by Dominant Monomials
  • S. Vakulenko (St. Petersburg, Russia)
    Symbolic Dynamics and Morphogenesis
  • S. Walcher (Aachen, Germany)
    Structure of CRN and Critical Parameters for Singular Perturbation Reductions

Confirmed Workshop Participants

François Boulier (Lille, France)
Aurélien Desoeuvres (Montpellier, France)
François Fages (Saclay, France)
Elisenda Feliu (Copenhagen, Denmark)
Dima Grigoriev (Lille, France)
Maik Kschischo (Remagen, Germany)
François Lemaire (Lille, France)
Christoph Lüders (Kassel, Germany)
Amirhossein Sadeghi Manesh (Coventry, UK)
Ovidiu Radulescu (Montpellier, France)
Hamid Rahkooy (Saarbrücken, Germany)
Satya Swarup Samal (BASF, Germany)
Andreas Schuppert (Aachen, Germany)
Werner M. Seiler (Kassel, Germany)
Matthias Seiß (Kassel, Germany)
Thomas Sturm (Nancy, France)
Sergey Vakulenko (St. Petersburg, Russia)
Sebastian Walcher (Aachen, Germany)
Jörg Zimmermann (Remagen, Germany)

Memorial Ceremony for Andreas Weber

Andreas Weber passed away on March 15, 2020. A memorial ceremony in his honor will be held on Tuesday, March 15, 2022 from 16:15 to 17:45 in a hybrid format. His family will be present.


The workshop will be held in accordance with the COVID-19 regulations of the University of Bonn. This is a not necessarily complete overview of regulations (in German). Current university regulations require three vaccinations with approved vaccines or recovery from a COVID-19 infection maximal 90 days ago and the wearing of a FFP2-mask through the whole workshop. To enter the building you need a machine-readable certificate of your vaccination and a passport or national ID card. Since the windows will be open all the time, you should wear warm clothes and bring an extra sweater, just in case.

Entry regulations to Germany

Information on entry regulations in Germany can be found at the website of the foreign office. Be aware that the regulations change frequently.

You have to be vaccinated three times with an approved vaccine. Otherwise, you might not be able to enter the country.


By Plane

Fly into Frankfurt (FRA). Then take a fast train (ICE, 37 min) from the railway station Frankfurt (Flughafen) Fernbahnhof inside the airport to Siegburg/Bonn. From Siegburg/Bonn take tram 66 to Bonn Hauptbahnhof (25 min).

You might as well fly into Köln Bonn (CGN). From there, take the fast bus SB60 to Bonn Hauptbahnhof (31 min).

Caveat: Do not fly into Frankfurt Hahn (HHN).

By Train

Take a train to Bonn Hbf. You can find train connections and buy tickets online at A "Flexpreis ticket" allows you to use any train on a certain day.

By Car

Use the links in the Accomodation section to navigate to the hotel.


We recommend booking a hotel soon.

One option is Hotel B&B, who offer free cancellation until the day of arrival. The address is Heinrich-Böll-Ring 7, 53119 Bonn. Google Maps knows the hotel. The hotel offers a limited number of free parking places, which cannot be reserved. To get from Bonn Hauptbahnhof to the Hotel on foot, take a subway in the direction Bonn West, which is the next stop to the hotel. Alternatively, you can walk 1.8 km (20 min).

Another option is Motel One, who offer free cancellation until 18:00 (6 pm) on the day of arrival. Make sure to confirm your arrival if you plan to arrive after 18:00. The address is Am Hauptbahnhof 12, 53111 Bonn. Here is Motel One on Google Maps. There are two public parking garages in the immediate vicinity that cannot be reserved, but were reportedly never booked out. If you are by foot, the hotel is right outside of the railway station building. Leave by the main exit, cross the street and go left for 200 m.

Contact Christoph Lüders for other hotel options near the city center.

Getting to the Meeting Site

From Bonn Hauptbahnhof you can take bus 604, 605, 606, or 607 and depart at Kaufmannstraße. Tickets can be bought on the bus. It is a good idea to bring small change as cards might not be accepted.

For going on your own, enlarge the map below. It's a 17 min walk from the main railway station. The marker "Informatik-Zentrum" is exactly where to go. From Endenicher Allee, walk around "Campo Mensa" or turn into Nußallee.



It is unclear if the mensa will be open. If it is, we can have lunch there. Otherwise, the fall-back is to order lunch and eat at the conference room. We will post updates here as soon as we get new information.


Monday: We have booked a table at Brauhaus Bönnsch, Sterntorbrücke 4, 53111 Bonn (Google maps) on Monday evening at 20:00. Click for German menu, or for a machine-translated English menu.

Tuesday: We have book a table at the Lebanese restaurant Phoenicia Lounge, Clemens-August-Straße 34, 53115 Bonn (Google maps) for Tuesday at 19:00. The link above has a picture of the German menu.

Google Maps (Interactive)

The "Last Mile"