01286nab a2200229 i 4500 acta35196 20260305102427.0 161017s2015 hu o 000 eng d 0001-6969 http://dx.doi.org/10.14232/actasm-013-072-0 doi SZTE Egyetemi Kiadványok Repozitórium hun eng Vernikov Boris M. Special elements in lattices of semigroup varieties [elektronikus dokumentum] / Vernikov Boris M. Bolyai Institute, University of Szeged Szeged 2015 79-109 Acta scientiarum mathematicarum 81 No. 1-2 We survey results concerning special elements of eight types (modular, lower-modular, upper-modular, distributive, codistributive, standard, costandard and neutral elements) in the lattice of all semigroup varieties and three of its sublattices, namely, the lattices of commutative varieties, of permutative varieties and of overcommutative ones. These results are due to Jezek, McKenzie, Shaprynskii, Volkov and the author. Several open questions are formulated. Természettudományok Matematika Matematika http://acta.bibl.u-szeged.hu/35196/1/math_081_numb_001_002_079-109.pdf Dokumentum-elérés