Abstract
We describe a new version of the so-called extension method that was used to prove quadratic upper bounds on the minimum length of reset words for various important classes of synchronizing automata. Our approach is formulated in terms of Markov chains; it is in a sense dual to the usual extension method and improves on a recent result by Jungers. As an application, we obtain a quadratic upper bound on the minimum length of reset words for a generalization of Eulerian automata.
Supported by the Russian Foundation for Basic Research, grant 10-01-00793, and by the Presidential Program for young researchers, grant MK-266.2012.1.
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Berlinkov, M.V. (2012). Synchronizing Automata on Quasi-Eulerian Digraph. In: Moreira, N., Reis, R. (eds) Implementation and Application of Automata. CIAA 2012. Lecture Notes in Computer Science, vol 7381. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31606-7_8
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