Automorphisms and Equivalence Relations in Topological Dynamics

David B. Ellis received his PhD in algebraic topology from the University of California, Berkeley. He has taught at a wide variety of institutions including Yale University, Vassar College, and Washington University in St Louis, and is currently a member of the faculty at Beloit College in Wisconsin. He has published papers in algebraic topology, foliations, fractal geometry and topological dynamics. Robert Ellis, a student of W. Gottschalk, is one of the founders of topological dynamics. He received his PhD from the University of Pennsylvania. During his long and productive career he made many major contributions to the abstract theory of topological dynamics, including his joint continuity theorem and the introduction of the enveloping semigroup. In so doing he laid the foundation for an algebraic approach to topological dynamics. Professor Ellis retired from the University of Minnesota in 1995 and was named a fellow of the AMS in 2012.

• Part I. Universal Constructions: 1. The Stone–Cech compactification βT; Appendix to Chapter 1. Ultrafilters and the construction of βT; 2. Flows and their enveloping semigroups; 3. Minimal sets and minimal right ideals; 4. Fundamental notions; 5. Quasi-factors and the circle operator; Appendix to Chapter 5. The Vietoris topology on 2^X; Part II. Equivalence Relations and Automorphisms: 6. Quotient spaces and relative products; 7. Icers on M and automorphisms of M; 8. Regular flows; 9. The quasi-relative product; Part III. The τ-Topology: 10. The τ-topology on Aut(X); 11. The derived group; 12. Quasi-factors and the τ-topology; Part IV. Subgroups of G and the Dynamics of Minimal Flows: 13. The proximal relation and the group P; 14. Distal flows and the group D; 15. Equicontinuous flows and the group E; Appendix to Chapter 15. Equicontinuity and the enveloping semigroup; 16. The regionally proximal relation; Part V. Extensions of Minimal Flows: 17. Open and highly proximal extensions; Appendix. Extremely disconnected flows; 18. Distal extensions of minimal flows; 19. Almost periodic extensions; 20. A tale of four theorems.