Sigmund Selberg

Sigmund Selberg is a Professor at the Department of Mathematics, University of Bergen, Norway. His research focuses on the mathematical analysis of nonlinear partial differential equations (PDEs), particularly dispersive equations, wave equations, and systems like Dirac-Klein-Gordon and Maxwell-Dirac. He investigates well-posedness, spatial analyticity, and asymptotic behavior of solutions, often in low-regularity contexts.

His work spans theoretical aspects of PDEs including:

• Global existence and uniqueness for critical nonlinearities
• Ill-posedness below regularity thresholds
• Dispersive estimates for KP and KdV-type equations
• Analytic properties of solutions in relativistic field theories

No awards, research grants, or student advising details are mentioned in the source material. Collaborative work includes publications with researchers from NTNU and international institutions.