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FOSSACS
2008
Springer
13 years 5 months ago
Optimal Lower Bounds on Regular Expression Size Using Communication Complexity
The problem of converting deterministic finite automata into (short) regular expressions is considered. It is known that the required expression size is 2(n) in the worst case for ...
Hermann Gruber, Jan Johannsen
FOSSACS
2008
Springer
13 years 5 months ago
A Modal Deconstruction of Access Control Logics
We present a translation from a logic of access control with a "says" operator to the classical modal logic S4. We prove that the translation is sound and complete. We al...
Deepak Garg, Martín Abadi
FOSSACS
2008
Springer
13 years 5 months ago
Footprints in Local Reasoning
Local reasoning about programs exploits the natural local behaviour common in programs by focussing on the footprint - that part of the resource accessed by the program. We address...
Mohammad Raza, Philippa Gardner
FOSSACS
2008
Springer
13 years 5 months ago
Coalgebraic Logic and Synthesis of Mealy Machines
Abstract. We present a novel coalgebraic logic for deterministic Mealy machines that is sound, complete and expressive w.r.t. bisimulation. Every finite Mealy machine corresponds t...
Marcello M. Bonsangue, Jan J. M. M. Rutten, Alexan...
FOSSACS
2008
Springer
13 years 5 months ago
The Microcosm Principle and Concurrency in Coalgebra
Abstract. Coalgebras are categorical presentations of state-based systems. In investigating parallel composition of coalgebras (realizing concurrency), we observe that the same alg...
Ichiro Hasuo, Bart Jacobs, Ana Sokolova
FOSSACS
2008
Springer
13 years 5 months ago
Deriving Bisimulation Congruences in the Presence of Negative Application Conditions
In recent years there have been several approaches for the automatic derivation of labels from an unlabeled reactive system. This can be done in such a way that the resulting bisim...
Guilherme Rangel, Barbara König, Hartmut Ehri...
FOSSACS
2008
Springer
13 years 5 months ago
Erasure and Polymorphism in Pure Type Systems
We introduce Erasure Pure Type Systems, an extension to Pure Type Systems with an erasure semantics centered around a type constructor indicating parametric polymorphism. The eras...
Nathan Mishra-Linger, Tim Sheard
FOSSACS
2008
Springer
13 years 5 months ago
Beyond Rank 1: Algebraic Semantics and Finite Models for Coalgebraic Logics
Coalgebras provide a uniform framework for the semantics of a large class of (mostly non-normal) modal logics, including e.g. monotone modal logic, probabilistic and graded modal l...
Dirk Pattinson, Lutz Schröder