Titlebook: Computer Science Logic; 13th International W J?rg Flum,Mario Rodriguez-Artalejo Conference proceedings 1999 Springer-Verlag Berlin Heidelbe

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0302-9743 econd refereeing round, previously required before a - per was accepted for publication in the proceedings, was dropped following a decision taken by the EACSL membership meeting held during CSL’98 (Brno, Czech Republic, August 25, 1998).978-3-540-66536-6978-3-540-48168-3Series ISSN 0302-9743 Series E-ISSN 1611-3349

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Topological Queries in Spatial Databases we study several languages geared towards topological queries, building upon well-known topologi- cal relationships between pairs of planar regions proposed by Egenhofer. In regard to (ii), we show that the topological information in a spatial database can be precisely summarized by a finite relati

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Descriptive and Parameterized Complexityecide if . satisfies φ? In this survey we discuss the . of such problems. Basically, this means that we ask under which circumstances we have an algorithm solving the problem in time .(|φ|)‖.‖., where ? is a computable function and c > 0 a constant. We argue that the parameterized perspective is mos

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Logical Specification of Operational Semanticsing inference systems in the styles advocated by Plotkin and by Kahn, Horn logic, equational specifications, reduction systems for evaluation contexts, rewriting logic, and tile logic. We consider the relationship between these frameworks, and assess their respective merits and drawbacks especially

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Constraint-Based Analysis of Broadcast Protocolsa message) or by broadcast (a process sends a message to all other processes). The paper describes an optimized algorithm for the automatic verification of safety properties in broadcast protocols. The algorithm checks whether a property holds for any number of processes.

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