Wolfgang Ziller

Wolfgang Ziller is a Professor of Mathematics Emeritus at the University of Pennsylvania, Department of Mathematics. He holds the title of Francis J. Carey Term Chair from 2002 to 2006. His research focuses on Differential Geometry. He can be contacted via email at wziller@math.upenn.edu or through his website at https://www.math.upenn.edu/people/wolfgang-ziller.

Wolfgang Ziller is a professor at the University of Pennsylvania, specializing in geometry. His research focuses on the curvature and symmetry properties of manifolds, particularly in the context of Einstein metrics, homogeneous spaces, and cohomogeneity one manifolds. He has extensively studied naturally reductive metrics, normal homogeneous Einstein manifolds, and the geometry of Hopf fibrations. His work also explores positively curved manifolds, weakly symmetric spaces, and the existence of periodic motions in conservative systems. Ziller's contributions span various areas of differential geometry, including the classification of Riemannian manifolds with non-negative sectional curvature and the analysis of closed geodesics on positively curved spaces.