BIMSA-YMSC Number Theory Lunch Seminar
This is an in-person seminar at BIMSA over lunch, aimed to promote communications in the Number Theory teams at BIMSA and YMSC. Each talk is 45 minutes long and does not focus on research results. Instead, we encourage each speaker to discuss either (1) a basic notion in Number Theory or related fields or (2) applications or computational aspects of Number Theory. People interested in Number Theory are welcome to attend.
Organizers：
Yong Suk Moon, Koji Shimizu
Speaker：
Arnaud Plessis（BIMSA）
Time：
Thur., 12:00-13:00, Sept. 25, 2025
Note:
The lunch gathering starts at noon, and the talk begins at 12:15.
Venue：
BIMSA A4-1
Title:
Analytification and tropicalization of some projective varieties II
Abstract:
Analytification is roughly the process of universally turning a "bad" algebraic space into a "nice" analytic space. Tropicalization is roughly the process of transferring algebraic geometry into convex geometry. I will explain these two concepts. Time permitting, I will also explain how to apply the tropical geometry in order to get applications towards Lehmer's problem.
About the speaker:
Arnaud Plessis is an assistant professor at BIMSA from September 2023. His research is mainly focused on diophantine geometry. He obtained his Phd. thesis in 2019 at Université de Caen Normandie. Before joining BIMSA, he has been Attaché Temporaire d'Enseignement et de Recherche (a kind of postdoctoral with course duties) at Université Grenoble Alpes from September 2019 to August 2020. Then, he has been postdoctor at Morningside Center of Mathematics, Chinese Academy of Sciences, from September 2020 to August 2023.
