There were 112 submissions (92 theoretical + 19 experimental). Accepted theoretical: 40 Accepted experimental: 9 Rejected: 63 LPAR 2001 List of Accepted Papers. ================================== A Local System for Classical Logic Kai Brünnler and Alwen Fernato Tiu A Monotonic Higher-Order Semantic Path Ordering Cristina Borralleras and Albert Rubio A Refinement Theory that Supports Reasoning about Knowledge and Time for Synchronous Agents Kai Engelhardt, Ron van der Meyden, Yoram Moses A Type-Theoretic Appropach to Induction for Higher-order Encodings Carsten Schuermann Analysis of Polymorphically Typed Logic Programs Using ACI-Unification Jan-Georg Smaus Andorra Model Revised: Introducing Nested Domain Variables and a Targeted Local Search Rong Yang and Steve Gregory Binding-time Annotations without Binding-time Analysis Wim Vanhoof and Maurice Bruynooghe Boolean Functions for Finite-Tree Dependencies R. Bagnara, E. Zaffanella, R. Gori, P. M. Hill Coherence and transitivity in coercive subtyping Yong Luoand Zhaohui Luo Coherent composition of distributed knowledge-bases through abduction Ofer Arieli, Bert Van Nuffelen, Marc Denecker, Maurice Bruynooghe Complexity of Linear Standard Theories Christopher Lynch and Barbara Morawska Computational space efficiency and minimal model generation for guarded formulae Lilia Georgieva, Ullrich Hustadt, Renate A. Schmidt Concept Formation via Proof Planning Failure Raul Monroy Counting the Number of Equivalent Binary Resolution Proofs Joseph D. Horton Efficient Computation of the Well-Founded Model Using Update Propagation Andreas Behrend Functional Logic Programming with Failure: a Set-oriented View F.J. López-Fraguas and J. Sánchez-Hernández Games and Model Checking for Guarded Logics DietmarBerwanger and Erich Graedel Herbrand's Theorem for Prenex Godel Logic and its Consequences for Theorem Proving M. Baaz, A. Ciabattoni, C.G. Fermueller How to Transform an Analyzer into a Verifier Marco Comini, Roberta Gori, Giorgio Levi Improving Automata Generation for Linear Temporal Logic by Considering the Automaton Hierarchy Klaus Schneider Indexed Categories and Bottom-Up Semantics of Logic Programs Gianluca Amato, James Lipton Inference of termination conditions for numerical loops in Prolog Alexander Serebrenik, Danny De Schreye Intuitionistic Multiplicative Proof Nets as Models of Directed Acyclic Graph Descriptions Guy Perrier Local Conditional High-Level Robot Programs Sebastian Sardina Local Temporal Logic is Expressively Complete for Series Parallel Traces Volker Diekert, Paul Gastin Logical omniscience and the cost of deliberation NatashaAlechina and Brian Logan On Bounded Specifications Orna Kupferman and Moshe Vardi On termination of meta-programs Alexander Serebrenik, Danny De Schreye Operational Semantics for Fixed-Point Logics on Constraint Databases Stephan Kreutzer Partial implicit unfolding in the Davis-Putnam procedure for quantified Boolean formulae Jussi Rintanen Permutation Problems and Channelling Constraints Toby Walsh Proof and Model Generation with Disconnection Tableaux Reinhold Letz & Gernot Stenz Reasoning about Evolving Nonmonotonic Knowledge Bases Thomas Eiter, Michael Fink, Giuliana Sabbatini, Hans Tompits Simplifying Binary Propositional Theories into Connected Components Twice as Fast Alvaro del Val Splitting through New Proposition Symbols Hans de Nivelle Tableaux for Reasoning About Atomic Updates Chris Fermueller, Georg Moser, Richard Zach Termination of rewriting with strategy annotations Salvador Lucas The functions provable by first order abstraction Daniel Leivant Unification in a Description Logic with Transitive Closure of Roles Franz Baader and Ralf Kuesters Census Data Repair: a challenging application of Disjunctive Logic Programming Enrico Franconi, Antonio Lauretti Palma, Nicola Leone, Simona Perri, and Francesco Scarcello Experimental Papers: ==================== A Computer Environment for Writing Ordinary Mathematical Proofs David McMath, Marianna Rozenfeld, Richard Sommer Automated Proof Support for Interval Logics Thomas Marthedal Rasmussen Certifying synchrony for free Sylvain Boulme and Gregoire Hamon Efficient Negation Using Abstract Interpretation Susana Muńoz, Juan José Moreno, Manuel Hermenegildo Inferring Termination Conditions for Logic Programs using Backwards Analysis Samir Genaim and Michael Codish Model Generation with Boolean Constraints Miyuki Koshimura, Hiroshi Fujita, and Ryuzo Hasegawa Reachability Analysis of Term Rewriting Systems with Timbuk Thomas Genet and Valerie Viet Triem Tong The Elog Web Extraction Language R. Baumgartner, S. Flesca, G. Gottlob First-Order Atom Definitions Extended Bijan Afshordel, Thomas Hillenbrand, Christoph Weidenbach