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Cañas Muñoz, Alejandro Hidalgo, Rubén A. Turiel-Sandín, Francisco Javier Viruel-Arbaizar, Antonio Ángel 2022-09-01T10:06:56Z 2022-09-01T10:06:56Z 2022-08-01 Cañas, A., Hidalgo, R.A., Turiel, F.J. et al. Groups as automorphisms of dessins d’enfants. Rev. Real Acad. Cienc. Exactas Fis. Nat. Ser. A-Mat. 116, 160 (2022). https://doi.org/10.1007/s13398-022-01285-7 https://hdl.handle.net/10630/24870 https://doi.org/10.1007/s13398-022-01285-7 It is known that every finite group can be represented as the full group of automorphisms of a suitable compact dessin d’enfant. In this paper, we give a constructive and easy proof that the same holds for any countable group by considering non-compact dessins. Moreover, we show that any tame action of a countable group is so realisable. eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Automorfismos Groups as automorphisms of dessins d’enfants journal article