147 citations · 733 across the 37 of their papers we have counts for
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math.DG2003★ 11 cited
The First Dirac Eigenvalue on Manifolds with Positive Scalar Curvature
Christian Baer, Mattias Dahl
We show that on every compact spin manifold admitting a Riemannian metric of positive scalar curvature Friedrich's eigenvalue estimate for the Dirac operator can be made sharp up t…
math.DG2003★ 147 cited
Generalized Cylinders in Semi-Riemannian and Spin Geometry
Christian Baer, Paul Gauduchon, Andrei Moroianu
We use a construction which we call generalized cylinders to give a new proof of the fundamental theorem of hypersurface theory. It has the advantage of being very simple and the r…