This volume takes its name from a popular series of intensive mathematics workshops hosted at institutions in Appalachia and surrounding areas. At these meetings, internationally prominent set theorists give one-day lectures that focus on important new directions, methods, tools and results so that non-experts can begin to master these and incorporate them into their own research. Each chapter in this volume was written by the workshop leaders in collaboration with select student participants, and together they represent most of the meetings from the period 2006–2012. Topics covered include forcing and large cardinals, descriptive set theory, and applications of set theoretic ideas in group theory and analysis, making this volume essential reading for a wide range of researchers and graduate students.
• Chapters are based on workshops by leading experts in set theory • Each chapter focuses on an applicable method, a seminal paper, a new direction, or a significant unpublished result • Emphasis on teaching specifics so the information imparted to the reader is concrete and useful
Contents
Contributors; Introduction; 1. An introduction to Pmax forcing Paul B. Larson, Peter Lumsdaine and Yimu Yin; 2. Countable Borel equivalence relations Simon Thomas and Scott Schneider; 3. Set theory and operator algebras Ilijas Farah and Eric Wofsey; 4. Set mapping reflection Justin Moore and David Milovich; 5. An introduction to hyperlinear and sofic groups Vladimir G. Pestov and Aleksandra Kwiatkowska; 6. Aronszajn trees and the SCH Itay Neeman and Spencer Unger; 7. Iterated forcing and the continuum hypothesis Todd Eisworth, Justin Tatch Moore and David Milovich; 8. Short extender forcing Moti Gitik and Spencer Unger; 9. The complexity of classification problems in ergodic theory Alexander S. Kechris and Robin D. Tucker-Drob; 10. On the strengths and weaknesses of weak squares Menachem Magidor and Chris Lambie-Hanson; 11. Proper forcing remastered Boban Veličković and Giorgio Venturi; 12. Set theory and von Neumann algebras Asger Törnquist and Martino Lupini; 13. The HOD dichotomy W. Hugh Woodin, Jacob Davis and Daniel Rodríguez.
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