scientific article; zbMATH DE number 1522674
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Publication:4510936
zbMath0978.20028MaRDI QIDQ4510936
Boris M. Vernikov, Mikhail V. Volkov
Publication date: 31 January 2002
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
\(G\)-setsbandssemigroup varietiesfree objectsideal extensionsunions of groupssubvariety latticesArguesian latticeslattices of commuting equivalence relationsdistributive subvariety latticesvarieties of semilatticesnilvarietiesfully invariant sub-semilattice congruences
Lattices of varieties (08B15) Varieties and pseudovarieties of semigroups (20M07) Free semigroups, generators and relations, word problems (20M05) Subalgebras, congruence relations (08A30)
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Upper-modular and related elements of the lattice of commutative semigroup varieties ⋮ Semigroup varieties with 1.5-permutable fully invariant congruences on their free objects. ⋮ On definability in some lattices of semigroup varieties. ⋮ Distributive and neutral elements of the lattice of commutative semigroup varieties. ⋮ On varieties generated by minimal complex semigroups. ⋮ Two weaker variants of congruence permutability for monoid varieties ⋮ Lattices of semigroup varieties
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