Theoretical Computer Science

Invited Contributions.- Semantic Subtyping: Challenges, Perspectives, and Open Problems.- Biological Systems as Reactive Systems.- Mobile Agents Computing: Security Issues and Algorithmic Solutions.- Technical Contributions.- Efficient Algorithms for Detecting Regular Point Configurations.- Pickup and Delivery for Moving Objects on Broken Lines.- A Static Analysis of PKI-Based Systems.- Subtyping Object and Recursive Types Logically.- The Language ?: Circuits, Computations and Classical Logic.- Checking Risky Events Is Enough for Local Policies.- The Graph Rewriting Calculus: Confluence and Expressiveness.- Safe Object Composition in the Presence of Subtyping.- Reachability Analysis in Boxed Ambients.- Error Mining for Regular Expression Patterns.- Reconstructing an Alternate Periodical Binary Matrix from Its Orthogonal Projections.- Inapproximability Results for the Lateral Gene Transfer Problem.- Faster Deterministic Wakeup in Multiple Access Channels.- Weighted Coloring: Further Complexity and Approximability Results.- Quantum Algorithms for a Set of Group Theoretic Problems.- On the Computational Complexity of the L (2,1)-Labeling Problem for Regular Graphs.- A Polymerase Based Algorithm for SAT.- Laxity Helps in Broadcast Scheduling.- Enforcing and Defying Associativity, Commutativity, Totality, and Strong Noninvertibility for One-Way Functions in Complexity Theory.- Synthesis from Temporal Specifications Using Preferred Answer Set Programming.- Model Checking Strategic Abilities of Agents Under Incomplete Information.- Improved Algorithms for Polynomial-Time Decay and Time-Decay with Additive Error.- A Theoretical Analysis of Alignment and Edit Problems for Trees.- A Complete Formulation of Generalized Affine Equivalence.- A New Combinatorial Approach to Sequence Comparison.- A Typed Assembly Language for Non-interference.- Improved Exact Exponential Algorithms for Vertex Bipartization and Other Problems.- A Typed Semantics of Higher-Order Store andSubtyping.-