Standard elements of the lattice of all monoid varieties are described. In particular, it is shown that in this lattice, the property of being a standard element is equivalent to being a neutral element.
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Supported by RF Ministry of Education and Science, project FEUZ-2020-0016.
Translated from Algebra i Logika, Vol. 59, No. 6, pp. 615-626, November-December, 2020. Russian DOI: https://doi.org/10.33048/alglog.2020.59.601.
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Gusev, S.V. Standard Elements of the Lattice of Monoid Varieties. Algebra Logic 59, 415–422 (2021). https://doi.org/10.1007/s10469-021-09621-3
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DOI: https://doi.org/10.1007/s10469-021-09621-3