Mathematical Foundations of Computer Science 1993

This volume contains the proceedings of the 18th International Symposium on Mathematical Foundations of Computer Science, MFCS '93, held in Gdansk, Poland, August-September 1993. The MFCS symposia, organized annually in Poland and the former Czechoslovakia since 1972, have a long and well-established tradition. Over the years they have served as a meeting ground for specialists from all branches of theoretical computer science, in particular - algorithms and complexity, automata theory and theory of languages, - concurrent, distributed and real-time systems, - the theory of functional, logic and object-oriented programming, - lambda calculus and type theory, - semantics and logics of programs, and others. The volume contains 12 invitedlectures and 56 contributed papers selected from 133 submissions.

Inhalt
On the unification free prolog programs.- Equivalences and preorders of transition systems.- Deliverables: a categorical approach to program development in type theory.- Complex and complex-like traces.- Symbolic bisimulations (abstract).- Some results on the full abstraction problem for restricted lambda calculi.- Action calculi, or syntactic action structures.- Observable properties of higher order functions that dynamically create local names, or: What's new?.- The second calculus of binary relations.- An introduction to dynamic labeled 2-structures.- Post Correspondence Problem: Primitivity and interrelations with complexity classes.- A taste of linear logic.- On the tree inclusion problem.- On the adequacy of per models.- Hausdorff reductions to sparse sets and to sets of high information content.- Stores as homomorphisms and their transformations.- Comparative semantics for linear arrays of communicating processes.- Rabin tree automata and finite monoids.- Efficient type reconstruction in the presence of inheritance.- A characterization of Sturmian morphisms.- On the complexity of scheduling incompatible jobs with unit-times.- Isomorphisms between predicate and state transformers.- On the amount of nondeterminism and the power of verifying.- Observing distribution in processes.- Speedup of recognizable trace languages.- May I borrow your logic?.- Approximate and exact deterministic parallel selection.- Defining soft sortedness by abstract interpretation.- A model for real-time process algebras (extended abstract).- Data encapsulation and modularity: Three views of inheritance.- Image compression using Weighted Finite Automata.- Filter models for a parallel and non deterministic ?-calculus.- Real number computability and domain theory.- Lambda substitutionalgebras.- Global properties of 2D cellular automata: some complexity results.- Completeness results for linear logic on Petri nets.- An expressive logic for Basic Process Algebra.- The complexity of finding replicas using equality tests.- A complete axiomatization for branching bisimulation congruence of finite-state behaviours.- Object Oriented application flow graphs and their semantics.- Some hierarchies for the communication complexity measures of cooperating grammar systems.- Efficient parallel graph algorithms based on open ear decomposition.- On the communication complexity of parallel computation.- A taxonomy of forgetting automata.- Hybrid parallel programming and implementation of synchronised communication.- Proof systems for cause based equivalences.- A uniform universal CREW PRAM.- Observing located concurrency.- The boundary of substitution systems.- New algorithms for detecting morphic images of a word.- Ignoring nonessential interleavings in assertional reasoning on concurrent programs.- Constant time reductions in ?-calculus.- Heterogeneous unified algebras.- A representation theorem for lambda abstraction algebras.- On saturated calculi for a linear temporal logic.- The snack powerdomain for database semantics.- Verifying properties of module construction in type theory.- On time-space trade-offs in dynamic graph pebbling.- Deterministic behavioural models for concurrency.- Real-time refinement: Semantics and application.- Deciding testing equivalence for real-time processes with dense time.- A calculus for higher order procedures with global variables.- Variable substitution with iconic combinators.- Feature constraints with first-class features.- Between Min Cut and Graph Bisection.- Paths and cycles in finite periodic graphs.- Learning decisionlists from noisy examples.- Analytic tableaux for finite and infinite Post logics.