147 citations · 733 across the 37 of their papers we have counts for
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math.DG2017★ 2 cited
Wave and Dirac equations on manifolds
Lars Andersson, Christian Baer
We review some recent results on geometric equations on Lorentzian manifolds such as the wave and Dirac equations. This includes well-posedness and stability for various initial va…
math.DG2017
Boundary value problems for the Lorentzian Dirac operator
Christian Baer, Sebastian Hannes
On a compact globally hyperbolic Lorentzian spin manifold with smooth spacelike Cauchy boundary the (hyperbolic) Dirac operator is known to be Fredholm when Atiyah-Patodi-Singer bo…
math.DG2017★ 9 cited
The curl operator on odd-dimensional manifolds
Christian Baer
We study the spectral properties of curl, a linear differential operator of first order acting on differential forms of appropriate degree on an odd-dimensional closed oriented Rie…