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?"
See also the unofficial HyLo 2006 homepage.
The revised version of accepted papers will be published online in an Elsevier ENTCS volume devoted to FLoC 2006 satellite workshops. A preliminary version of the proceedings will also be distributed at the workshop.
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 which was held as part of FLoC 2002, Copenhagen, Denmark. 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.
Patrick Blackburn (INRIA Lorraine, France)
Carlos Areces (INRIA Lorraine, France)
Associate Professor, Ph.D. Torben BraŁner Department of Computer Science Roskilde University P.O. Box 260 DK-4000 Roskilde, Denmark Phone: +45 4674 3840 Fax: +45 4674 3072 Email: email@example.com
The workshop is sponsored by the HyLoMOL project which is funded by the Danish Natural Science Research Council.