INTERNATIONAL CONFERENCE ON ADVANCES IN NUMERICAL INTEGRATION
To be held at
Espace Gruyère in
Bulle (canton of Fribourg), Switzerland
Monday July 6 - Friday July 10, 2026
GENERAL INFORMATION
The main theme of the conference is numerical integration, in particular
for ordinary differential equations, partial differential equations,
differential algebraic equations, optimal control problems, and any
type of problems involving integration in one way or another.
The number of invited
speakers is limited to about 25 with everyone given at most one hour for a talk
including questions. There will be no parallel sessions.
Bulle is a city in the canton of Fribourg and is
located in the beautiful Gruyère region,
one of the most scenic and touristic part of Switzerland.
The spoken language in the region is mainly french.
There is a train station
in Bulle with connections to major cities in Switzerland:
Fribourg, Lausanne, Bern, Geneva, Basel, Zurich, etc.
There are airports in Geneva, Zurich, and Basel, these
airports are almost all equidistant from Bulle.
The Gruyère anthem "Lioba-le Ranz des Vaches", 1955 short version at the "Fête des Vignerons".
INVITED SPEAKERS
- Bernard Bonnard (be.bonnard@gmail.com), U. of Bourgogne, France
- Luigi Brugnano (luigi.brugnano@unifi.it), U. of Firenze, Italy
- Mari Paz Calvo (mariapaz.calvo@uva.es), U. of Valladolid, Spain
- Elena Celledoni (elena.celledoni@ntnu.no), Norwegian U. of Science
and Technology, Norway
- Amandin Chyba (amandinchyba@gmail.com), Courant Institute, New York U., USA
- Monique Chyba (chyba@hawaii.edu), U. of Hawaii, USA
- Dajana Conte (dajconte@unisa.it), U. of Salerno, Italy
- Marnix van Daele (Marnix.VanDaele@UGent.be), U. Gent, Belgium
- Gianluca Frasca Caccia (gfrascacaccia@unisa.it), U. of Salerno, Italy
- Severiano González Pinto (spinto@ull.es), U. of La Laguna, Spain
- Marcus Grote (marcus.grote@unibas.ch), U. of Basel, Switzerland
- Ernst Hairer (Ernst.Hairer@unige.ch), U. of Geneva, Switzerland
- Inmaculada Higueras (higueras@unavarra.es), U. of Navarra, Spain
- Laurent O. Jay (laurent-jay@uiowa.edu), U. of Iowa, USA
- Christian Lubich (lubich@na.uni-tuebingen.de), U. Tuebingen, Germany
- Jesus Martin Vaquero (jesmarva@usal.es), U. of Salamanca, Spain
- Juan I. Montijano (monti@unizar.es), U. of Zaragoza, Spain
- Brynjulf Owren (brynjulf.owren@ntnu.no), Norwegian U. of Science
and Technology, Norway
- Giovanni Pagano (giovanni.pagano5@unina.it), U. of Napoli Federico II, Italy
- Luis Randez (luis.randez@gmail.com), U. of Zaragoza, Spain
- Teo Roldan (teo@unavarra.es), U. of Navarra, Spain
- Mechthild Thalhammer (Mechthild.Thalhammer@uibk.ac.at), U. of Innsbruck, Austria
- Gerhard Wanner (Gerhard.Wanner@unige.ch), U. of Geneva, Switzerland
- Ewa Weinmueller (e.weinmueller@tuwien.ac.at), Technische U. Wien, Austria
Scientific Committee: Laurent O. Jay and Juan I. Montijano.
PROGRAM
Will be determined and available sometime in June.
A priori the talks will be scheduled between 9am-12pm and 2pm-5pm
(subject to change).
CONFERENCE FEE
The fee of 230 USD or 200 EUROS includes the conference dinner on Tuesday evening
and an excursion on Wednesday late morning and afternoon, see below.
CONFERENCE PROCEEDINGS
Monique Chyba has suggested the possibility to have
conference proceedings as a special volume in the book series
Applied Mathematics
of the
American Institute of Mathematical Sciences.
Monique is the Editor in Chief of this book series.
More details will be given during the conference
depending on the interest of participants.
CONFERENCE DINNER ON TUESDAY EVENING JULY 7
The Conference dinner will be held on Tuesday July 7 at 7pm
at the restaurant
Le Gruyérien (Grand-Rue 1, Bulle).
Customize your own menu (Appetizer + Main + Dessert):
- Appetizer (choose one):
- Thin/light foccacia bread and thinly sliced dried beef meat (a Swiss specialty called "viande sechée des Grisons" in french)
- Mixed salad
- Main/Entrée (choose one):
- Cheese fondue half and half (a Gruyère specialty)
- Chinese fondue beef and chicken
- Vegetarian meals: choose from the
"grande carte" menu, e.g., vegetable curry ("Curry de légumes")
- Pizza: choose from the
"grande carte" menu, look for "Les Pizzas" and "Les Pizzas Spéciales"
- Beef sirloin café de Paris 230 gr. (30 USD supplement) with vegetables cooked in a wok,
look for "Notre Spécialité" in the "grande carte" menu
- Dessert (choose one) :
- Iced meringue and Gruyère double cream (a Gruyère specialty)
- Panna cotta with berries
- Fruit salad
- Drinks are included
Additional guest: 60 USD or 55 EUR.
Email me your choice (as a simple 3 digits number) before June 30th,
for example: 212 = Mixed salad...+ Cheese fondue...+ Panna cotta...
If I do not hear from you, the choice will be 111.
EXCURSION ON WEDNESDAY JULY 8
An excursion from Bulle to the medieval city of Gruyères
will be available by taking the train at 11:20am (or 11:50am?) from Bulle to the Gruyères train station
with a visit to a Gruyère cheese factory
(check the cheese making timetable).
Then free lunch time in Gruyères. Then after lunch a visit to the
castle of Gruyères.
For those who like hiking there is a bus from the Gruyères train station
to the Moléson village (11 minutes) where you can take a
funicular
to Plan-Francey which is the starting point of many trails
and of the
cable car
to the top of the Moléson mountain.
From Espace Gruyères it is a 15 minutes walk to the Bulle train station.
On Wednesday July 8 there are trains at 10:50am, 11:20am, 11:50am, 12:20pm, 12:44pm from the Bulle train
station to the Gruyères train station (it takes 8 minutes).
HOTELS
In Bulle
In the medieval city of Gruyères (near the castle)
Expect at least a 40 minutes commute time by foot and train
between the medieval city of Gruyères and
Espace Gruyère in Bulle:
First it is a 15 minutes walk from the medieval city of Gruyères to the train
station in Gruyères,
then a 7-8 minutes train ride between Gruyères and Bulle train stations,
then a 13 minutes walk from the Bulle train station to the
Espace Gruyère in Bulle.
On Monday July 6 there are trains at 07:07am, 07:32am, 07:38am, 07:58am, 08:32am from the
Gruyères train station to the Bulle train station.
PUBLIC TRANSPORTATION IN THE BULLE AREA
On Monday July 6 there are trains at 07:07am, 07:32am, 07:38am, 07:58am, 08:32am, etc., from the train station in Gruyères to Bulle (type the 0 in front!).
TOURISTIC INFORMATION
The Tourist Office La Gruyère Tourisme
is located in Bulle near the train station.
Wednesday afternoon July 8 and Friday afternoon July 10
will be free time to enjoy some touristic activities.
There are many places to visit in the Gruyère region, to name a few
The local newspaper: La Gruyère.

Laurent O. Jay
Department of Mathematics
14 MacLean Hall
The University of Iowa
Iowa City, IA 52242-1419
USA
Tel: (319)-335-0898
E-mail: laurent-jay@uiowa.edu