Abstract
We study relationships of monotone well quasiorders to regular languages and \(\omega \)-languages, concentrating on decidability of the lattices of upper sets on words and infinite words. We establish rather general sufficient conditions for decidability. Applying these conditions to concrete natural monotone WQOs, we obtain new decidability results and new proofs of some known results.
M. Ogawa—This research was partially supported by Japan Society for the Promotion of Science (JSPS), Core-to-Core Program (A. Advanced Research Networks).
V. Selivanov—The research of V. Selivanov was supported by Russian Science Foundation, project 18-11-00100.
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Ogawa, M., Selivanov, V. (2019). On Classes of Regular Languages Related to Monotone WQOs. In: Hospodár, M., Jirásková, G., Konstantinidis, S. (eds) Descriptional Complexity of Formal Systems. DCFS 2019. Lecture Notes in Computer Science(), vol 11612. Springer, Cham. https://doi.org/10.1007/978-3-030-23247-4_18
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