Acknowledgements

Prof. Shelah's work has been supported by several sources. We gratefully acknowlege support from:

• The Austrian Science Fund (FWF)
• The British Council
• The Deutsche Forschungsgemeinschaft (DFG)
• The DIMACS Center, Rutgers University
• The Edmund Landau Minerva Center for Mathematical Analysis, Hebrew University of Jerusalem
• The European Research Council (ERC)
• The Fields Institute
• The German Israeli Foundation for Scientific Research and Development
• The Institute of Advanced Studies of the Hebrew University of Jerusalem
• The Israeli Academy of Sciences
• The Israel Science Foundation
• The Mathematical Sciences Research Institute (MSRI)
• The Mittag-Leffler institute
• The Natural Sciences and Engineering Research Council of Canada
• The Niedersachsen Foundation
• The United States-Israel Binational Science Foundation
• The US National Science Foundation (NSF)
• An individual who whishes to remain anonymous for generous support for typing services.