Automata, Languages and Programming : Ninth Colloquium Aarhus, Denmark, July 12-16, 1982

Locality in modular systems.- On-the-fly garbage collection: New algorithms inspired by program proofs.- Algebraic specifications for parametrized data types with minimal parameter and target algebras.- A modification of the ?-calculus as a base for functional programming languages.- On the power of nondeterminism in dynamic logic.- Equivalence and membership problems for regular trace languages.- On the power of chain rules in context free grammars.- Extended Chomsky-Sch tzenberger theorems.- Real time agents.- Machine inductive inference and language identification.- Approximations of infinitary objects.- On test sets and the Ehrenfeucht conjecture.- An automata-theoretic characterization of the OI-hierarchy.- Fast detection of polyhedral intersections.- On reversal-bounded counter machines and on pushdown automata with a bound on the size of the pushdown store.- Multihead finite state automata am concatenation.- Conditions enforcing regularity of context-free languages.- Repetitions in homomorphisms and languages.- Parameter passing commutes with implementation of parameterized data types.- An operational semantics for pure dataflow.- Some properties of D-continuous causal nets.- A branching process arising in dynamic hashing, trie searching and polynomial factorization.- A sound and complete HOARE axiomatization of the ADA-rendezvous.- Universal realization, persistent interconnection and implementation of abstract modules.- Heaps on heaps.- A boundary of isomorphism completeness in the lattice of semigroup pseudovarieties.- Derived Pairs, overlap closures, and rewrite dominoes: New tools for analyzing term rewriting systems.- A programming language for the inductive sets, and applications.- A lower bound for the formula size of rational functions.- On the equivalence problem for binary DOL systems.- Results on the propositional ?-calculus.- An iteration theorem for simple precedence languages.- The power of non-rectilinear holes.- Fixed-point semantics for algebraic (tree) grammars.- Completing biprefix codes.- Advances in pebbling.- A powerdomain for countable non-determinism.- Properties of a notation for combining functions.- On the power of probabilistic choice in synchronous parallel computations.- Biprefix codes and semisimple algebras.- Algorithmic theories of data structures.- Implementation of parameterised specifications.- Algebraic semantics of recursive flowchart schemes.- The complexity of promise problems.- Global and local invariants in transition systems.- On relativization and the existence of complete sets.- Semantics of interference control.- Efficient simulations of multicounter machines.- Event structure semantics for CCS and related languages.- Domains for denotational semantics.