All the talks will take place at the University Paris Diderot.
On Monday 25th and Tuesday 26th, the talks will be in the
Salle des Thèses (580 F)-Fifth Floor
of the "Halle aux Farines" building. It is the building number 4 on this map
https://www.imj-prg.fr/IMG/pdf/plan_a3_ge_2012-2013.pdf
In order to access the room you should enter from the entrance next to the Seine river and take the elevator named "ascenseur F", or alternatively, the stairs F1 or F2.
On Wednesday 27th, the talks will take place in the Math Department
ROOM 1021 - First Floor.
The Math building is named "Sophie Germain", whose address is "Place Aurélie Nemours, Paris 13ème", it is number 9 on the previous map. See also here for an exact position on the map:
https://goo.gl/maps/xqrgA2peoSJ2
The nearest metro station is: Bibliothèque François Mittérand - Line Metro 14 and Line RER C
You can also access by TRAM 3A and get out at "Avenue de France" or even by BUS.
For more information you can also see : https://www.math.univ-paris-diderot.fr/ufr/acces
