Balazs Barany

Budapest University of Technology and Economics

Dynamically defined subsets of generic self-affine sets

Ergodic Theory and Dynamical Systems Seminar

25th November 2021, 2:00 pm – 3:00 pm
Online, Zoom (talk will be broadcast in 2.04 Fry building)

In dynamical systems, shrinking target sets and pointwise recurrent sets are two important classes of dynamically defined subsets. In this talk we introduce a mild condition on the linear parts of the affine mappings that allow us to bound the Hausdorff dimension of cylindrical shrinking target and recurrence sets. For generic self-affine sets in the sense of Falconer, that is by randomising the translation part of the affine maps, we prove that these bounds are sharp. These mild assumptions mean that our results significantly extend and complement the existing literature for recurrence on self-affine sets. This is a joint work with Sascha Troscheit.

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