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Publicado en línea: 31 may 2022
Páginas: 11 - 28
Recibido: 30 jun 2021
Aceptado: 23 nov 2021
DOI: https://doi.org/10.2478/udt-2022-0006
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© 2022 Hajime Kaneko et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Kaneko, Hajime
Institute of Mathematics / Research Core for Mathematical Sciences, University of TsukubaTsukuba, Japan
Stoll, Thomas
CNRS / UniversitédeLorraine, InstitutÉlie Cartan de LorraineFrance