Each year, after examination of their applications, about 200 mathematicians and theoretical physicists from all over the world are selected by the scientific council and invited to come to IHES to pursue their research project, collaborate with other researchers from the community and participate in the Institute’s activities.
This selection is made twice a year on the sole criterion of excellence and by close collaboration with the CNRS-IHES Research Directors and the holder of the Université de Cergy-Pontoise-IHES chair.
All applications are examined in June and December by the scientific council except post-doctoral applications which are examined only in December and the summer school proposals which are examined only in June.
Non-discrimination policy: IHES policy is that no person shall be discriminated against on account of race, religion, color, disability, gender, sexual orientation, gender identity, national or ethnical origin.
CNRS Delegation at IHES
Delegation is a specific position offered to lecturers and university professors working in research at CNRS.
Delegation is a specific position offered to lecturers and university professors working in research at CNRS.
For 2025-2026, IHES, in partnership with INSMI and INP, is offering three 6-month delegations, two in in mathematics and one in physics.
Teacher-researchers are invited to submit their applications for CNRS delegations via the Galaxie application (the application deadline: Autumn 2024 tbc). You are also invited to contact an IHES researcher or to write to Emmanuel Ullmo, ullmo@ihes.fr, to express your interest in a research stay at IHES. Delegation can begin on September 1, 2025 or February 1, 2026. Selected applicants will be offered accommodation at the Institute’s residence, some being suitable for a family. Help with childcare is also available.
Delegations to CNRS are subject to an agreement between CNRS and the teacher-researcher’s home institution. Financial compensation is paid by CNRS to the home institution for the replacement of the teacher-researcher’s teaching duties. IHES will reimburse CNRS for the cost of delegations.
For more information (in French)
Invited researchers
Specific cases set aside, the IHES general invitation programme offers invited researchers a per diem, office space and free accommodation in the Institute's residence. The IHES also has a cafeteria for weekday lunches.
All applications should be submitted on line and include the following documents:
– Application form duly completed
– Curriculum-vitæ
– Publication list
– Short research project
– Recommendation letters (not required for Senior researchers)
Welcoming researchers from African countries
Thanks to the support of the Simons Foundation, IHES funds the traveling and the visiting costs of researchers coming from Africa and selected by the Scientific Council.
Contact
application@ihes.fr
Next selection
- June 2026
Call for applications opens
- Mid-February 2026
Application submission deadline
- May 31, 2026
Results communicated
- End of July 2026 at the latest
Summer school call for proposals
Since 2006, IHES has been hosting summer schools in mathematics or theoretical physics (on alternating years). These schools provide a hundred or so PhD students, postdocs and young researchers an overview of the latest developments.
The IHES summer schools are typically organized by an external scientific organizing committee, with IHES providing administrative and financial support (i.e. most of the accommodation costs at the university dorms located nearby for participants, as well as travel and accommodation expenses for lecturers and organizers).
Following the campaign for letters of interest for the IHES 2028 Summer school in physics, we are now inviting prospective organisers to submit full proposals that will be discussed after the selection.
You are invited to submit a project (approx. 5 pages) listing:
-The name and contact of the main organiser
-The Summer School theme
-The proposed title
-The chosen dates (among the two 2-week periods proposed in July 2028)
-A short description of the project, its aim
-The members of the Organising Committee -The members of the Scientific Committee -The tentative schedule (incl. the number of classes per day, and any problem sessions, if any)
-The list of suggested speakers
-Your expected and/or confirmed funding, if any
-Any additional comments
Deadline for submission: June 8, 2026
Contact: summer-schools@ihes.fr
Previous IHES summer schools
2026 – Cosmological Correlators (July 6-17)
2025 – Statistical Aspects of Nonlinear Physics (June 23-July 4)
2025 – Discrete Subgroups of Lie Groups (July 7-18th)
2024 – Symmetries and Anomalies: a Modern Take
2023 – Recent Advances in Algebraic K-theory
2022 – Summer School on the Langlands Program
2021 – Enumerative Geometry, Physics and Representation Theory
x
Submit a "Summer School" proposal
Next selection
- June 2024 (for 2026)
Results communicated
- end of June 2024
Postdocs
The IHES Scientific Council selects a number of applicants for postdoctoral research visits in mathematics, theoretical physics and theoretical biology at its December meeting each year. Selected postdocs will be invited for two years, with a possible extension of one year, starting from the following academic year.
Selected applicants will be welcomed to IHES as members of the Postdoctoral Institute.
These positions are funded thanks to IHES’ partnership with outside institutions or because they are part of a specific project (HUAWEI, SIMONS Foundation, ERC grant…).
All applications must be completed online and include the following:
– duly completed application form
– curriculum-vitae
– list of publications
– research summary
– 2 to 3 letters of recommendation
Postdoctoral positions funded by specific programmes
The Huawei Young Talents Program
Presentation of the positions funded by the Huawei Young Talents Programme (4 positions: 3 in Mathematics, 1 in Physics)
The Simons Foundation General Program
Presentation of the position funded by the Simons Foundation (1 position in Physics)
The Simons Foundation program “Simons collaboration on Probabilistic paths to Quantum Field Theory”
Presentation of the Simons Foundation program: Simons collaboration on Probabilistic paths to Quantum Field Theory (1 position)
The ERC GravitaS
Postdoctoral offer financed by the ERC GravitaS (1 position)

Contact
Next selection
- December 2025
Call for applications opens
- Autumn 2025
Application submission deadline
- November 30, 2025
Results communicated
- end of January 2026