16 citations · 70 across the 19 of their papers we have counts for
Showing 2020Show all
3 papers · 1 filter
math.DG2020★ 14 cited
Lorentz meets Lipschitz
Christian Lange, Alexander Lytchak, Clemens Sämann
We show that maximal causal curves for a Lipschitz continuous Lorentzian metric admit a -parametrization and that they solve the geodesic equation in the sense o…
math.GT2020★ 4 cited
Seifert fibrations of lens spaces over non-orientable bases
Hansjörg Geiges, Christian Lange
We classify the Seifert fibrations of lens spaces where the base orbifold is non-orientable. This is an addendum to our earlier paper `Seifert fibrations of lens spaces'. We correc…
math.SG2020★ 16 cited
A Boothby-Wang theorem for Besse contact manifolds
Marc Kegel, Christian Lange
A Reeb flow on a contact manifold is called Besse if all its orbits are periodic, possibly with different periods. We characterize contact manifolds whose Reeb flows are Besse as p…