Scope
-----

Studying logics via semantics is a well-established and very active branch of mathematical logic, 
with many applications, in computer science and elsewhere. The area is characterized by results, 
tools and techniques stemming from various fields, including universal algebra, topology, category
theory, order, and model theory. The program of the conference TACL 2011 will focus on three
interconnecting mathematical themes central to the semantical study of logics and their applications:
algebraic, categorical, and topological methods. This is the fifth conference in the series Topology,
Algebra and Categories in Logic (TACL, formerly TANCL).

Earlier installments of this conference have been organized in Tbilisi (2003), Barcelona (2005), 
Oxford (2007), Amsterdam (2009).


Featured topics
---------------

Contributed talks can deal with any topic dealing with the use of algebraic, categorical or topological
methods in either logic or computer science. This includes, but is not limited to, the following areas:

* Algebraic structures in CS
* Algebraic logic
* Coalgebra
* Categorical methods in logic
* Domain theory
* Fuzzy and many-valued logics
* Lattice theory
* Lattices with operators
* Modal logics
* Non-classical logics
* Ordered topological spaces
* Ordered algebraic structures
* Pointfree topology
* Proofs and Types
* Residuated structures
* Semantics
* Stone-type dualities
* Substructural logics
* Topological semantics of modal logic


Invited speakers
----------------

* Steve Awodey, Carnegie Mellon University
* Lev Beklemishev, Steklov Mathematical Institute Moscow
* David Gabelaia, Tbilisi Razmadze Mathematical Institute
* Nikolaos Galatos, University of Denver
* Pierre Gillibert, Charles University Prague
* Jean Goubault-Larrecq, ENS Cachan, CNRS, INRIA
* Rosalie Iemhoff, Utrecht University
* Mamuka Jibladze, Tbilisi Razmadze Mathematical Institute
* Vincenzo Marra, Università degli Studi di Milano
* Thomas Streicher, Technical University Darmstadt

Esakia session
--------------

The Fifth International Conference on Topology, Algebra and Categories in Logic is dedicated to the
memory of Leo Esakia (1934-2010).

In Leo's honour there will be a special session during the conference; three of the invited speakers
will be giving their talk in this session: Lev Beklemishev, David Gabelaia, and Mamuka Jibladze. 
In addition, a memorial talk on the life and work of Leo Esakia will delivered by the chair of this
session, Guram Bezhanishvili.

The program committee specially encourages submissions related to the work of Leo Esakia, and may 
select some of these submission for presentation at the special session.

Submissions
-----------

Contributed presentations will be of two types:

* standard presentations of 20 minutes in parallel sessions,
* featured, 30 minutes long, plenary presentations.

The submission of an extended abstract in pdf format will be required to be selected for a contributed
presentation of either kind.

Concerning the standard presentations, while preference will be given to new work, results that have
already been published or presented elsewhere will also be considered.

Concerning the featured presentations: the program committee will choose a small number of submissions of which the authors will be invited to give a plenary presentation. The criteria for this selection will be:
originality, significance and interest to the wider TACL community.

There will be just one submission procedure, for contributed presentations of either kind: authors
are requested to submit a short text of four pages, in English and in pdf format, through the easychair submission site:
https://www.easychair.org/conferences/?conf=tacl2011

Important dates
---------------

April 18, 2011: Abstract submission deadline
May 20, 2011:   Notification to authors
July 26-30, 2011:  Conference


Program Committee
-----------------

Guram Bezhanishvili, New Mexico State University Petr Cintula, Academy of Sciences of the Czech 
Republic Thierry Coquand, University of Gothenburg Mai Gehrke, Radboud University, Nijmegen Silvio
Ghilardi, Università degli Studi di Milano Rob Goldblatt, Victoria University, Wellington Martin 
Hyland, King's College, Cambridge Ramon Jansana, Universitat de Barcelona Achim Jung (PC co-chair),
University of Birmingham Alexander Kurz, University of Leicester Yves Lafont, Université Aix-Marseille
II Tadeusz Litak, University of Leicester Paul-André Melliès, CNRS Paris Diderot George Metcalfe, 
Universität Bern Nicola Olivetti, Université Aix-Marseille III Hiroakira Ono, Japan Advanced Institute 
of Science and Technology Luigi Santocanale, Université Aix-Marseille I Kazushige Terui, Kyoto University
Costantine Tsinakis, Vanderbilt University Yde Venema (PC co-chair), University of Amsterdam Friedrich
Wehrung, Université de Caen Michael Zakharyaschev, University of London


More Information
----------------

If you have any queries please send them to the conference email address:
       tacl2011@lif.univ-mrs.fr
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