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FOSSACS
2008
Springer
13 years 6 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 6 months ago
What Else Is Decidable about Integer Arrays?
We introduce a new decidable logic for reasoning about infinite arrays of integers. The logic is in the first-order fragment and allows (1) Presburger constraints on existentially...
Peter Habermehl, Radu Iosif, Tomás Vojnar
FOSSACS
2008
Springer
13 years 6 months ago
The Implicit Calculus of Constructions as a Programming Language with Dependent Types
Abstract. In this paper, we show how Miquel's Implicit Calculus of Constructions (ICC) can be used as a programming language featuring dependent types. Since this system has a...
Bruno Barras, Bruno Bernardo
FOSSACS
2008
Springer
13 years 6 months ago
Symbolic Semantics Revisited
Abstract. Symbolic bisimulations were introduced as a mean to define value-passing process calculi using smaller, possibly finite labelled transition systems, equipped with symboli...
Filippo Bonchi, Ugo Montanari
FOSSACS
2008
Springer
13 years 6 months ago
Robust Analysis of Timed Automata via Channel Machines
Whereas formal verification of timed systems has become a very active field of research, the idealised mathematical semantics of timed automata cannot be faithfully implemented. Se...
Patricia Bouyer, Nicolas Markey, Pierre-Alain Reyn...