Missions

The Centre International de Mathématiques (CIRM) will host David GAY (University of Georgia) from January to June 2026 as the laureate of the Jean Morlet Chair. During this residency, he will lead, in collaboration with Delphine MOUSSARD (I2M Aix-Marseille Université), the research program " TRISECTIONS AND THEIR GENERALIZATIONS". The Postdoc will be responsible for supporting and coordinating the Chair's scientific program and working with the team of the 'Institut de Mathématiques de Marseille'. No teaching duties are required.
The Jean Morlet semester will focus on trisections of smooth 4–manifolds and their generalizations,in particular the relationship between trisections and contact and symplectic topology, the use trisections to produce new 4–dimensional invariants, generalizations of trisections to higher dimensions, understanding trisections and their generalizations from the piecewise linear perspective, the potential to use trisections to study diffeomorphisms of 4–manifolds, studying Goeritz groups of trisected 4–manifolds, and setting up a careful theory of parameterized families of trisections, parameterized by arbitrarily many dimensions, to address naturality issues in invariant constructions.

Activités

He/she will contribute to the writing of scientific articles and to the coordination of the Chair's various research activities.
He/she will take part in program events.
He/she will also contribute to the promotion and communication of the program.
He/she may also contribute to dissemination and popularization activities organized by CIRM.

Compétences

PHD

Contexte de travail

CIRM is a joint service unit of the Centre National pour la Recherche Scientifique (CNRS), the Société Mathématique de France (SMF) and the Université d'Aix-Marseille (AMU). CIRM is attached to the Institut National des Sciences Mathématiques et de leurs Interactions (INSMI).
Located on the Luminy campus in Marseille, CIRM is the world's largest mathematical meeting center in terms of attendance. We welcome over 5000 researchers every year, who take part in 120 international mathematical events.
Each year, CIRM hosts two mathematicians for 6 months as part of the Jean Morlet Chair. Each semester of the Chair is devoted to an internationally-renowned researcher from a foreign institution who is leading a project closely associating the research units of Aix-Marseille University. With the help of a local sponsor, the holder organizes a scientific program. The idea is not only to establish collaboration at an international level, but also to develop strong synergies between laboratories, researchers and doctoral students, within the mathematical community and beyond. The Chair is open to all fields of mathematical science and mathematics in interaction.
Each semester is built around a wide-ranging program of scientific activities (1 conference, 1 research school, 1 or 2 workshops, 2 paired research projects + any other parallel activities such as Masterclasses, FRUMAM conferences, etc.). It is organized in parallel with a program of invitations to collaborators, doctoral and post-doctoral students, special guests, etc. The latter brings additional funding to the Chair, as well as international visibility.
Since its creation in 2013, this internationally acclaimed program has provided an ideal opportunity to promote the attractiveness of the Marseille region, and to showcase current research and emerging ideas in all areas of the mathematical sciences.