Here is some access information.
From the Dijon-ville train station, take the tramway 1 in direction of "Quetigny". Get off at the "Université" station.
The Institut de Mathématiques de Bourgogne is in the Mirande building on the campus. Here is a map with directions to follow to access the Mirande building from the "Université" tramway station. (click to enlarge)
The Institut de Mathématiques de Bourgogne is located at the following address:
9 avenue Alain Savary - BP 47870
21078 DIJON Cedex - FRANCE
The René Baire room is on the 4th floor.
You will find here a map of the campus.