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Recognizable Picture Languages: Separating UREC from coUREC via Communication Complexity

Callard, Antonin et al.
arXiv (All) · Papers
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computational-complexityformal-languages-and-automata-theory
We introduce communication-complexity lifting techniques into the study of recognizable picture languages. As an application, we resolve a long-standing open problem of Anselmo et al. (2006) by constructing a language in UREC whose complement does not belong to REC. Our lower-bound argument is inspi
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