PC Seminar: New results and problems in the ergodic theory of g-measures
- Date
- 4 December 2025, 10:15–11:30
- Location
- Ångström Laboratory, 64119
- Type
- Seminar
- Lecturer
- Anders Öberg
- Organiser
- Matematiska institutionen
- Contact person
- Sascha Troscheit
Anders Öberg gives this seminar. Welcome!
Abstract: I present some new results and problems on g-measures with my collaborators Noam Berger (Munich) and Anders Johansson (Gävle). The g-mensurers can be viewed as stationary distributions on chains on fiinitely many symbols with a dependence on the infinite past. There is also the interpretation of a one-sided Ising model with long range interactions. Also, there is a close coonection to invariant measures for different dynamical systems, including iterated function systems.
I will in particular discuss uniqueness and mixing properties of g-measures, as well as their entropies.
This is a seminar in our seminar series on Probability and Combinatorics (PC).