Computation and logic in the real world : Third Conference on Computability in Europe, CiE 2007 Siena, Italy, June 18-23, 2007 : proceedings

Shifting and Lifting of Cellular Automata.- Learning as Data Compression.- Reachability Problems: An Update.- RZ: A Tool for Bringing Constructive and Computable Mathematics Closer to Programming Practice.- Producer/Consumer in Membrane Systems and Petri Nets.- A Minimal Pair in the Quotient Structure M/NCup.- Constructive Dimension and Weak Truth-Table Degrees.- A Classification of Viruses Through Recursion Theorems.- Borel Complexity of Topological Operations on Computable Metric Spaces.- Colocatedness and Lebesgue Integrability.- Computing with Genetic Gates.- Resource Restricted Computability Theoretic Learning: Illustrative Topics and Problems.- Characterizing Programming Systems Allowing Program Self-reference.- K-Trivial Closed Sets and Continuous Functions.- Pseudojump Operators and Classes.- Sofic Trace Subshift of a Cellular Automaton.- Thin Maximal Antichains in the Turing Degrees.- Effective Computation for Nonlinear Systems.- On Rules and Parameter Free Systems in Bounded Arithmetic.- The New Promise of Analog Computation.- Comparing C.E. Sets Based on Their Settling Times.- Time-Complexity Semantics for Feasible Affine Recursions.- Algebraic Model of an Arithmetic Unit for TTE-Computable Normalized Rational Numbers.- Feasible Depth.- Abstract Geometrical Computation and the Linear Blum, Shub and Smale Model.- A Continuous Derivative for Real-Valued Functions.- Refocusing Generalised Normalisation.- The Complexity Ecology of Parameters: An Illustration Using Bounded Max Leaf Number.- Parameterized Complexity and Logic.- Index Sets of Computable Structures with Decidable Theories.- Minimal Representations for Majority Games.- Linear Transformations in Boolean Complexity Theory.- Exact Pair Theorem for the ?-Enumeration Degrees.- Operational Semantics for Positive Relevant Logics Without Distribution.- Multi-valued Logics, Effectiveness and Domains.- Internal Computability.- Post's Problem for Ordinal Register Machines.- Unique Existence and Computability in Constructive Reverse Mathematics.- Input-Dependence in Function-Learning.- Some Notes on Degree Spectra of the Structures.- Confluence of Cut-Elimination Procedures for the Intuitionistic Sequent Calculus.- The Polynomial and Linear Hierarchies in V0.- The Uniformity Principle for ?-Definability with Applications to Computable Analysis.- Circuit Complexity of Regular Languages.- Definability in the Homomorphic Quasiorder of Finite Labeled Forests.- Physics and Computation: The Status of Landauer's Principle.- Strict Self-assembly of Discrete Sierpinski Triangles.- Binary Trees and (Maximal) Order Types.- A Weakly 2-Random Set That Is Not Generalized Low.- Speed-Up Theorems in Type-2 Computation.- The Complexity of Quickly ORM-Decidable Sets.- On Accepting Networks of Splicing Processors of Size 3.- Liquid Computing.- Quotients over Minimal Type Theory.- Hairpin Completion Versus Hairpin Reduction.- Hierarchies in Fragments of Monadic Strict NP.- Membrane Systems and Their Application to Systems Biology.- Some Aspects of a Complexity Theory for Continuous Time Systems.- Enumerations and Torsion Free Abelian Groups.- Locally Computable Structures.- Logic and Control.- Nash Stability in Additively Separable Hedonic Games Is NP-Hard.- Comparing Notions of Computational Entropy.- From Logic to Physics: How the Meaning of Computation Changed over Time.- Theories and Ordinals: Ordinal Analysis.- Computable Riemann Surfaces.- Rank Lower Bounds for the Sherali-Adams Operator.- Infinite Computations and a Hierarchy in ? 3.- Natural Computing: A Natural and Timely Trend for Natural Sciences and Science of Computation.- Biochemical Reactions as Computations.- Doing Without Turing Machines: Constructivism and Formal Topology.- Problems as Solutions.- A Useful Undecidable Theory.- On the Computational Power of Flip-Flop Proteins on Membranes.- Computability and Incomputability.- A Jump Inversion Theorem for the Degree Spectra.- Cupping Enumeration Degrees to 0 e ?.- What Is the Lesson of Quantum Computing?.- Does the Cell Compute?.- Computational Complexity of Constraint Satisfaction.- Finding Most Likely Solutions.- Turing Unbound: Transfinite Computation.- Computability in Amorphous Structures.- The Complexity of Small Universal Turing Machines.- Approximating Generalized Multicut on Trees.- (Short) Survey of Real Hypercomputation.- Characterizing Programming Systems Allowing Program Self-reference.