1 citations · 1 across the 4 of their papers we have counts for
Showing 2007Show all
2 papers · 1 filter
math.DS2007
Equicontinuous Geodesic Flows
Christian Pries
The author shows that equicontinuous geodesic flows on surfaces are periodic. A similar result for flows on 3-manifolds is also proven. The idea of the proof is to show that the re…
math.DG2007★ 1 cited
If all geodesics are closed on the projective plane
Christian Pries
The paper shows that the curvature of RP2 is constant iff all geodesics are closed. Therefore RP2 is the first known manifold with only one G-structure. It took quiete a long time…