Contiguous R.E. Degrees -- Abstract construction of counterexamples in recursive graph theory -- Minimal degrees and 1-generic sets below 0? -- Undecidability and recursive equivalence II -- Logical syntax and computational complexity -- Subrecursive hierarchies via direct limits -- A star-finite relational semantics for parallel programs -- Between constructive and classical mathematics -- Partial closures and semantics of while: Towards an iteration-based theory of data types -- Toward logic tailored for computational complexity -- On a new notion of partial conservativity -- Finitely approximable sets -- A unified approach to constructive and recursive analysis -- On faithful interpretability -- Abstract recursion as a foundation for the theory of algorithms -- Some logical problems connected with a modular decomposition theory of automata -- Diophantine equations in a fragment of number theory -- Generalized rules for quantifiers and the completeness of the intuitionistic operators &, ?, ?, ?, ?, ? -- On subsets of the Skolem class of exponential polynomials -- Effective operators in a topological setting -- An axiomatization of the apartness fragment of the theory DLO+ of dense linear order.