3 citations · 8 across the 10 of their papers we have counts for
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Reduction theory for Fuchsian groups with cusps
Adam Abrams, Svetlana Katok, Ilie Ugarcovici
We study a family of Bowen-Series-like maps associated to any finitely generated Fuchsian group of the first kind with at least one cusp. These maps act on the boundary of the hype…
On the topological entropy of (a,b)-continued fraction transformations
Adam Abrams, Svetlana Katok, Ilie Ugarcovici
We study the topological entropy of a two-parameter family of maps related to (a,b)-continued fraction algorithms and prove that it is constant on a square within the parameter spa…
Rigidity and flexibility of entropies of boundary maps associated to Fuchsian groups
Adam Abrams, Svetlana Katok, Ilie Ugarcovici
Given a closed, orientable surface of constant negative curvature and genus , we study the topological entropy and measure-theoretic entropy (with respect to a smooth inva…
Rigidity of topological entropy of boundary maps associated to Fuchsian groups
Adam Abrams, Svetlana Katok, Ilie Ugarcovici
Given a closed, orientable surface of constant negative curvature and genus , we study a family of generalized Bowen-Series boundary maps and prove the following rigidity…
A strongly aperiodic shift of finite type on the discrete Heisenberg group using Robinson tilings
Ayse A. Sahin, Michael Schraudner, Ilie Ugarcovici
We explicitly construct a strongly aperiodic subshift of finite type for the discrete Heisenberg group. Our example builds on the classical aperiodic tilings of the plane due to Ra…
Flexibility of measure-theoretic entropy of boundary maps associated to Fuchsian groups
Adam Abrams, Svetlana Katok, Ilie Ugarcovici
Given a closed, oriented, compact surface of constant negative curvature and genus , we study the measure-theoretic entropy of the Bowen-Series boundary map with respe…