Thematic trimester programme with short courses, seminars and workshops
September 14th to December 4th, 2026 at the Institut Henri Poincaré, Paris
REGISTRATION IS FREE AND MANDATORY
Click here to register for the trimester
IMPORTANT WARNING: Scam / Phishing / SMiShing ! Note that ill-intentioned people may be trying to contact some of participants by email or phone to get money and personal details, by pretending to be part of the staff of the conference center. IHP and the organizers will NEVER contact you by phone on this issue and will NEVER ask you to pay for accommodation/ board / possible registration fee in advance.
Deadline for financial support request is March 15, 2026
Operator algebras are self-adjoint subalgebras of the bounded operators on a Hilbert space and divide into two main classes: C∗-algebras and von Neumann algebras, according to whether one demands that they are closed in the norm topology or the weak operator topology. When one first meets these algebras, they might look quite similar, but they have different natures as exemplified by the commutative case: via the Gelfand transform, abelian C∗-algebras are algebras of continuous functions vanishing at infinity on a locally compact Hausdorff space, while abelian von Neumann algebras are essentially bounded measurable functions on a measure space. These flavours persist in general. Topological concepts such as dimension and invariants such as K-theory pervade the study of C∗-algebras, while measure-theoretic style methods are often used to study von Neumann algebras.
September 14th to 18th, 2026 — Introductory school: Operator Algebras and interactions at IESC (Cargèse):
A separate (free) registration is needed for the school:
Link to registration
September 28 to October 2 — Workshop 1 - Operator Algebras: Groups and Dynamics
October 26 to 30 — Workshop 2 - Operator Algebras: Matricial Approximations
November 30 to December 4 — Workshop 3 - Operator Algebras: Rigidity and Classification
Organising committee:
- Cyril Houdayer (Ecole normale supérieure)
- Mikael de la Salle (CNRS, Université Claude Bernard Lyon 1)
- Stuart White (University of Oxford)
Scientific committee:
- Nadia Larsen (University of Oslo)
- Magdalena Musat (University of Copenhagen)
- Gilles Pisier (Sorbonne Université, Académie des Sciences)
- Stefaan Vaes (KU Leuven)
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Programme coordinated by the Centre Emile Borel at IHP
Sorbonne Université, CNRS
