Reset sequences for monotonic automata
SIAM Journal on Computing
Lower bounds for natural proof systems
SFCS '77 Proceedings of the 18th Annual Symposium on Foundations of Computer Science
Synchronizing Automata and the Černý Conjecture
Language and Automata Theory and Applications
Synchronizing automata with finitely many minimal synchronizing words
Information and Computation
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A deterministic finite-state automaton A is said to be synchronizing if there is a synchronizing word, i.e. a word that takes all the states of the automaton A to a particular one. We consider synchronizing automata whose language of synchronizing words is finitely generated as a two-sided ideal in Σ*. Answering a question stated in [1], here we prove that recognizing such automata is a PSPACE-complete problem.