In a first order language we interpret the action of the monoid M of embeddings of (ℚ,<) on the set ℚ inside (M,°). A similar result is proved for the monoid E of all endomorphisms of (ℚ,≤).
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E. Vargas-García is supported by Asociacíon Mexicana de Cultura A.C.
Translated from Algebra i Logika, Vol. 60, No. 1, pp. 96-112, January-February, 2021. https://doi.org/10.33048/alglog.2021.60.106
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Truss, J.K., Vargas-García, E. Interpreting the Action of the Endomorphism Monoid of the Rationals. Algebra Logic 60, 64–74 (2021). https://doi.org/10.1007/s10469-021-09628-w
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DOI: https://doi.org/10.1007/s10469-021-09628-w