Preface Volume 64

AbstractThis volume contains selected papers presented at the International Workshop on Functional and (Constraint) Logic Programming (WFLP 2001). The workshop was held in Kiel, Germany, during September 13-15, 2001. It is the combination of two workshops of a successful series of annual workshops on declarative programming. The international workshops on functional and logic programming aimed at bringing together researchers interested in functional programming, logic programming, as well as their integration. Previous workshops have been held in Benicassim (Spain), Grenoble (France), Bad Honnef (Germany). The workshops on (constraint) logic programming are the annual meeting of the Society of Logic Programming (GLP e.V.) and bring together researchers interested in logic programming, constraint programming, and related areas like databases and artificial intelligence. Previous workshops have been held in Germany, Austria and Switzerland.On this occasion, both workshops were jointly organized in order to promote the cross-fertilizing exchange of ideas and experiences among researchers and students from the different communities interested in the foundations, applications, and combinations of high-level, declarative programming languages and related areas. The technical program of the workshop included invited talks, presentations of refereed papers and system demonstrations.The Program Committee of WFLP 2001 selected from all contributions presented at the workshop, which had been reviewed before the workshop, papers for inclusion into this special issue. The authors of all selected papers prepared revised versions after the workshop which were refereed again in order to ensure a high scientific quality. This volume contains the finally accepted versions based on this review process.The program committee of WFLP 2001 consisted of Slim AbdennadherLMU MünchenMaría AlpuenteUP ValenciaSergio AntoyPortland State UniversityChristoph BeierleFernUniv. HagenAlexander BockmayrUniv. Henri Poincaré, NancyHarold BoleyDFKI KaiserslauternFrançois BryLMU MünchenJürgen DixUniv. ManchesterRachid EchahedIMAG, GrenobleUwe EglyTU WienMoreno FalaschiUniv. UdineBurkhard FreitagUniv. PassauThom FrühwirthLMU MünchenNorbert E. FuchsUniv. ZürichUlrich GeskeGMD-FIRST BerlinMichael HanusCAU Kiel (chair)Herbert KuchenUniv. MünsterJuan José Moreno NavarroUP MadridMario Rodríguez-ArtalejoUC MadridDietmar SeipelUniv. WürzburgI am grateful to all the members of the Program Committee and all the referees for their careful work in the review process. Furthermore, I would like to thank Michael Mislove, Managing Editor of the ENTCS series, for making this special issue possible.August 21, 2002 Michael Hanu