- CDSNS Colloquium
- Friday, April 9, 2021 - 1:00pm for 1 hour (actually 50 minutes)
- Zoom (see additional notes for link)
- Andrey Gogolev – The Ohio State University – firstname.lastname@example.org – https://people.math.osu.edu/gogolyev.1/
- Alex Blumenthal
Please Note: Zoom link: https://zoom.us/j/97732215148?pwd=Z0FBNXNFSy9mRUx3UVk4alE4MlRHdz09
The classical Livshits theorem characterizes coboundaries over a transitive Anosov flow as precisely those functions which integrate to zero over all periodic orbits of the flow. I will present a variant of this theorem which uses a weaker assumption and gives a weaker conclusion that the function is an ``abelian coboundary.” Such weaker version corresponds to studying the cohomological equation on infinite abelian covers e.g., for geodesic flows on abelian covers of hyperbolic surfaces. I will also discuss a connection to the marked length spectrum rigidity of Riemannian metrics. Joint work with Federico Rodriguez Hertz.