Partial Differential Equations, Analysis and Geometry

Partial Differential Equations, Analysis and Geometry    
A Conference in Honor of Sergiu Klainerman's 75th Birthday    
January 12-16 2026    
at IHES - Marilyn and James Simons Conference Center    
How to get to IHES

Registration is free but compulsory and open until December 31, 2025. 

Sergiu Klainerman, Eugene Higgins Professor of Mathematics at Princeton University, has made seminal contributions to nonlinear partial differential equations, analysis, differential geometry, and mathematical general relativity. He pioneered the vector field method for nonlinear wave equations, developed multilinear techniques for low-regularity analysis, and established landmark results on the stability of Minkowski space and Kerr black holes. His work has reshaped PDE, analysis, geometry, and relativity, training and inspiring generations of mathematicians.

Throughout his career, Sergiu Klainerman has received many distinctions, including:

• Sloan Fellowship (1983–1985)

• MacArthur Fellowship (1991–1996)

• Guggenheim Fellowship (1997–1998)

• Bôcher Memorial Prize, American Mathematical Society (1999)

• Fellow of the American Academy of Arts and Sciences (1996)

• Foreign Member of the French Academy of Sciences (2002)

• Member of the U.S. National Academy of Sciences (2005)

• Israel Gelfand Chair, IHÉS (2017–2019)

The conference will celebrate Sergiu Klainerman’s 75th birthday by bringing together experts to present recent advances in analysis, PDE, geometry, and general relativity, with the aim of fostering interaction across fields and engaging early-career researchers in these exciting developments.

Speakers:

• Scott Armstrong (Sorbonne Université)
• Demetrios Christodoulou (ETH Zürich)
• Thibault Damour (IHES)
• Camillo De Lellis (IAS)
• Elena Giorgi (Columbia University)
• Alexandru Ionescu (Princeton University)
• Philip Isett (Caltech)
• Jonathan Luk (Stanford University)
• Sung-Jin Oh (UC Berkeley)
• Duong Phong (Columbia University)

• Richard Schoen (UC Irvine)

• Sylvia Serfaty (Sorbonne Université)

• Jacques Smulevici (Sorbonne Université)

• Gigliola Staffilani (MIT)

• Daniel Tataru (UC Berkeley)

• Vlad Vicol (NYU)

• Hong Wang (IHES)

• Qian Wang (University of Oxford)

• Pin Yu (Tsinghua University) 

Scientific committee:     
Frank Merle (IHES & CY Cergy Paris Université), Jérémie Szeftel (Sorbonne Université)

Organizing committee:     
Elena Giorgi (Columbia University), Markus Keel (University of Minnesota), Jérémie Szeftel (Sorbonne Université)