Symbiont Workshop in Kassel on March 18/19th, 2020

Symbiont Project Meeting


Universität Kassel,
Institut für Mathematik (AVZ),
Heinrich-Plett-Straße 40,
34132 Kassel.

From Wednesday, March 18th, 2020 to Thursday, March 19th, 2020.

See also the Minisymposium Symbolic computation methods of differential equations, dynamical systems, and control theory on Tuesday, March 17th, at GAMM.

Participants who are interested in the Symbiont-Dinner at Himalaya Restaurant on Tuesday evening (March 17th) please send an email to or to confirm your dinner participation.

Travel Information


The nearest airports are

There are connecting trains from Frankfurt, Hannover and Paderborn to Kassel-Wilhelmshöhe. From Kassel-Calden Airport you can take a bus or taxi to the campuses in Kassel.

Railway Stations:

The main railway station is Kassel-Wilhelmshöhe (not as one might think Kassel Hauptbahnhof). Train schedules can be found under


The following Hotels are close to the station Kassel-Wilhelmshöhe:

An alternative, which is not close to the station Kassel-Wilhelmshöhe, is


The workshop will take place on the Mathematics and Natural Sciences campus (AVZ) of Kassel University at Heinrich-Plett-Straße 40 (caution: this is not the main campus!). From the railway station Kassel-Wilhelmshöhe and the hotels close to it the workshop venue can be conveniently reached using tram #3 or tram #7 (both direction Mattenberg) which, during daytime, run every 15min. The closest tram stop is "Korbacher Straße/Universität". Crossing the tram and railway tracks as well as Korbacher Straße, you directly enter Heinrich-Plett-Straße, and the university is the first building on the righthand side. Participants should use the first entrance from the street (which is marked "G").

From Hotel Crede you can reach the workshop location using the tram stops Dennhäuser Straße or Leuschnerstraße which are both on Frankfurter Straße. Take tram #6 (direction Brückenhof) and get off at the stop Heinrich-Plett-Straße. This is the closest stop to the campus of Mathematics and Natural Sciences.

The university restaurant (called "Mensa") is located in the immediate neighbourhood of the workshop venue in the same building. It offers full meals for a rather low price from 11:45 until 14:00 o'clock. Also in the same building, there is a cafeteria offering snacks and refreshments all day and small meals at lunch time.

Registered Participants

For registration send an email to

Werner Seiler (Univ. Kassel, Germany),
Matthias Seiß (Univ. Kassel, Germany),
Miruna-Stefana Sorea (MPI Leipzig, Germany),
François Boulier (Université de Lille, France),
Alexandru Iosif (RWTH Aachen, Germany),
Daniel Robertz (Univ. of Plymouth, UK),
Christoph Lüders (Univ. Bonn, Germany),
Andreas Weber (Univ. Bonn, Germany),
Sebastian Walcher (RWTH Aachen, Germany),
Thomas Sturm (CNRS Nancy, France),
Hamid Rahkooy (CNRS Nancy, France),
François Fages (Inria Saclay, France),
Éléonore Bellot (Inria Saclay, France),
Jerome Feret (Inria Paris, France),
Ovidiu Radulescu (Université de Montpellier, France),
Aurélien Desoeuvres (Université de Montpellier, France).

Preliminary programme

March 17th, 2020

Symbiont-Dinner at Himalaya Restaurant (Wilhelmshöher Allee 262, 34131 Kassel, Germany)

March 18th, 2020

Time Speaker Titel of Talk
09:30 Christoph Lüders Scaling and reduction of reaction networks -- Mathematical approaches and foundations
10:15 Aurélien Desoeuvres IbexOptBox, a new algorithm to detect homeostasis, and possible application to the multistationnarity problem
11:00 Jerome Feret Conservative approximations of differential models of interactions between proteins
12:00 Lunch Break
13:30 Alexandru Iosif Searching for rate constant sensitivities with tropical methods
14:15 Éléonore Bellot Solving tropical equilibration constraints
15:00 Coffee Break
15:30 François Boulier On the relationship between Ritt and Kolchin differential algebra and tropical differential geometry
16:15 Discussions

March 19th, 2020

Time Speaker Titel of Talk
09:00 Miruna-Stefana Sorea Disguised Toric Dynamical Systems
09:45 Hamid Rahkooy Toricity of steady state ideals
10:30 Coffee Break
11:00 Werner Seiler Interior and Exterior Symmetries
11:45 Matthias Seiss Singular initial value problems for scalar quasi-linear ordinary differential equations
12:30 Lunch Break
13:30 Discussions