Paper accepted at FM 2023: Energy Problems in Finite and Timed Automata with Büchi Conditions
16 Nov
2022
16 Nov
'22
6:38 a.m.
We are happy to announce that the following article has been accepted
at the he 25th International Symposium on Formal Methods (FM 2023) to be
held in Lübeck in March 2023:
Energy Problems in Finite and Timed Automata with Büchi Conditions
Sven Dziadek, Uli Fahrenberg and Philipp Schlehuber-Caissier
Abstract: We show how to efficiently solve energy Büchi problems in finite
weighted Büchi automata and in one-clock weighted timed Büchi automata; all
our algorithms are implemented in a pipeline based on TChecker and Spot.
Solving the latter problem is done by using the corner-point abstraction;
the former problem is handled by a modified version of Bellman-Ford
interleaved with Couvreur's algorithm.
The paper is available at https://arxiv.org/abs/2205.04392
5 Mar
5 Mar
3:34 p.m.
New subject: Paper accepted at PN 2023: A Myhill-Nerode Theorem for Higher-Dimensional Automata
We are happy to announce that the following article has been accepted
at Application and Theory of Petri Nets and Concurrency (PETRI NETS):
A Myhill-Nerode Theorem for Higher-Dimensional Automata
Uli Fahrenberg, Krzysztof Ziemiański
Abstract: We establish a Myhill-Nerode type theorem for
higher-dimensional automata (HDAs), stating that a language is regular
precisely if it has finite prefix quotient. HDAs extend standard automata
with additional structure, making it possible to distinguish between
interleavings and concurrency. We also introduce deterministic HDAs and show
that not all HDAs are determinizable, that is, there exist regular languages
that cannot be recognised by a deterministic HDA. Using our theorem, we
develop an internal characterisation of deterministic languages.
The paper is available at https://arxiv.org/abs/2210.08298
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Uli Fahrenberg