The non-coexistence of distality and expansivity for group actions on infinite compacta

Let X be a compact metric space and G a finitely generated group. Suppose φ : G→ Homeo(X) is a continuous action. We show that if φ is both distal and expansive, then X must be finite. A counterexample is constructed to show the necessity of finite generation condition on G. This is also a supplement to a result due to AuslanderGlasner-Weiss which says that every distal action by a finitely generated group on a zerodimensional compactum is equicontinuous.

[1]  K. Schmidt,et al.  Homoclinic points of algebraic ℤ^{}-actions , 1999 .

[2]  Tom Meyerovitch Pseudo-orbit tracing and algebraic actions of countable amenable groups , 2017, Ergodic Theory and Dynamical Systems.

[3]  de Jan Vries,et al.  Elements of Topological Dynamics , 1993 .

[4]  R. Mañé,et al.  Expansive homeomorphisms and topological dimension , 1979 .

[5]  Robert Ellis,et al.  Distal transformation groups. , 1958 .

[6]  H. Furstenberg,et al.  The Structure of Distal Flows , 1963 .

[7]  Enhui Shi Continua having distal minimal actions by amenable groups. , 2020, 2001.03755.

[8]  Hanfeng Li,et al.  Homoclinic groups, IE groups, and expansive algebraic actions , 2011, 1103.1567.

[9]  K. Schmidt,et al.  ESITheErwinSchrodingerInternational InstituteforMathematicalPhysics Boltzmanngasse9 A-1090Wien,Austria HomoclinicPointsofAlgebraicZd{Actions , 2022 .

[10]  Felipe Garc'ia-Ramos,et al.  Markovian properties of continuous group actions: algebraic actions, entropy and the homoclinic group , 2019, 1911.00785.

[11]  Tom Meyerovitch,et al.  Expansive multiparameter actions and mean dimension , 2017, Transactions of the American Mathematical Society.

[12]  Enhui Shi,et al.  The Nonexistence of Expansive ℤd Actions on Graphs , 2005 .

[13]  Eric A Sobie,et al.  An Introduction to Dynamical Systems , 2011, Science Signaling.

[14]  Enhui Shi Distal higher rank lattice actions on surfaces , 2020, 2001.01183.

[15]  H. Kato The nonexistence of expansive homeomorphisms of Suslinian continua , 1990 .