### Generalized varieties of commutative and nilpotent semigroups.

N.R. Reilly, J. Almeida (1984)

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N.R. Reilly, J. Almeida (1984)

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T. Evans (1971)

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Avapa Chantasartrassmee, Jörg Koppitz (2005)

Discussiones Mathematicae - General Algebra and Applications

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he class of all M-solid varieties of a given type t forms a complete sublattice of the lattice ℒ(τ) of all varieties of algebrasof type t. This gives a tool for a better description of the lattice ℒ(τ) by characterization of complete sublattices. In particular, this was done for varieties of semigroups by L. Polák ([10]) as well as by Denecke and Koppitz ([4], [5]). Denecke and Hounnon characterized M-solid varieties of semirings ([3]) and M-solid varieties of groups were characterized...

Nicolae Manolache (1992)

Mathematische Zeitschrift

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Ju.G. Koselev (1992)

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Joseph E. Kuczkowski (1975)

Matematický časopis

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M.V. Sapir (1991)

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Robert Šulka (1968)

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L. Polák (1987)

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Libor Polák (1988)

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