******************************************************************* FIRST CALL FOR PAPERS International Workshop on Hybrid Logic 2006 (HyLo 2006) Affiliated with LICS 2006 August 11, 2006, Seattle, USA ******************************************************************* AIMS AND SCOPE: Hybrid logic is a branch of modal logic in which it is possible to directly refer to worlds/times/states or whatever the elements of the (Kripke) model are meant to represent. Although they date back to the late 1960s, and have been sporadically investigated ever since, it is only in the 1990s that work on them really got into its stride. It is easy to justify interest in hybrid logic on applied grounds, because of the usefulness of the additional expressive power. For example, when reasoning about time one often wants to build up a series of assertions about what happens at a particular instant,and standard modal formalisms do not allow this. What is less obvious is that the route hybrid logic takes to overcome this problem (the basic mechanism being to add nominals --- atomic symbols true at a unique point --- together with extra modalities to exploit them) often actually improves the behavior of the underlying modal formalism. For example, it becomes far simpler to formulate modal tableau, resolution, and natural deduction in hybrid logic, and completeness and interpolation results can be proved of a generality that is not available in orthodox modal logic. Hybrid logic is now a mature field, therefore a theme of special interest at this HyLo workshop will be the combination of hybrid logic with other logics, the basic methodological question being "what is the best way of hybridizing a given logic?" However, submissions in all areas of hybrid logic are welcome. The workshop HyLo 2006 is likely to be relevant to a wide range of people, including those interested in description logic, feature logic, applied modal logics, temporal logic, and labelled deduction. The workshop continues a series of previous workshops on hybrid logic, for example the LICS-affiliated HyLo 2002 (http://floc02.diku.dk/HYLO) which was held as part of FLoC 2002, Copenhagen, Denmark. If you are unsure whether your work is of relevance to the workshop, please do not hesitate to contact the workshop organizers for more information. Contact details are given below. For more general background on hybrid logic, and many of the key papers, see the Hybrid Logics homepage (http://hylo.loria.fr/). PROGRAM COMMITTEE: Carlos Areces (INRIA Lorraine, France) Patrick Blackburn (INRIA Lorraine, France) Thomas Bolander (Technical University of Denmark) Torben Braüner (Roskilde University, Denmark) --- Chair Valeria de Paiva (PARC, USA) Melvin Fitting (Lehman College, New York, USA) Balder ten Cate (University of Amsterdam, The Netherlands) Jørgen Villadsen (Roskilde University, Denmark) SUBMISSIONS: We invite the contribution of papers reporting new work from researchers interested in hybrid logic. Details about the submission procedure will be announced in the second call for papers (note that the dates below are tentative). The workshop proceedings have been accepted for publication in ENTCS (http://www.elsevier.com/locate/entcs/). A preliminary version of the proceedings will also be distributed at the workshop. One author for each accepted paper must attend the workshop in order to present the paper. IMPORTANT DATES (TENTATIVE): Deadline for submissions: May 26, 2006 Notification of acceptance: June 23, 2006 Deadline for final versions: July 21, 2006 CONTACT DETAILS: See the workshop homepage (http://hylomol.ruc.dk/HyLo2006) for further information. Please send all correspondence regarding the workshop to the organizers: Patrick Blackburn http://www.loria.fr/~blackbur/ Thomas Bolander http://www.imm.dtu.dk/~tb/ Torben Braüner --- Chair http://www.ruc.dk/~torben/ Valeria de Paiva http://www.cs.bham.ac.uk/~vdp/ Jørgen Villadsen http://www.ruc.dk/~jv/