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Computability on Quasi-Polish Spaces

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Descriptional Complexity of Formal Systems (DCFS 2019)

Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 11612))

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Abstract

We investigate the effectivizations of several equivalent definitions of quasi-Polish spaces and study which characterizations hold effectively. Being a computable effectively open image of the Baire space is a robust notion that admits several characterizations. We show that some natural effectivizations of quasi-metric spaces are strictly stronger.

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 731143

C. Rojas was supported by Marie Curie RISE project CID.

V. Selivanov was supported by Inria program Invited Researcher and the Regional Mathematical Center of Kazan Federal University (project 1.13556.2019/13.1 of the Ministry of Education and Science of Russian Federation).

D.M. Stull was supported by Inria post-doc program.

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Correspondence to Mathieu Hoyrup .

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Hoyrup, M., Rojas, C., Selivanov, V., Stull, D.M. (2019). Computability on Quasi-Polish Spaces. 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_13

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  • DOI: https://doi.org/10.1007/978-3-030-23247-4_13

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