Matematičeskie zametki, Tome 21 (1977) no. 6, pp. 865-872
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A. N. Trakhtman. AЁvariety of semigroups without an irreducible basis for identities. Matematičeskie zametki, Tome 21 (1977) no. 6, pp. 865-872. http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a14/
@article{MZM_1977_21_6_a14,
author = {A. N. Trakhtman},
title = {A{\CYRYO}variety of semigroups without an irreducible basis for identities},
journal = {Matemati\v{c}eskie zametki},
pages = {865--872},
year = {1977},
volume = {21},
number = {6},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a14/}
}
TY - JOUR
AU - A. N. Trakhtman
TI - AЁvariety of semigroups without an irreducible basis for identities
JO - Matematičeskie zametki
PY - 1977
SP - 865
EP - 872
VL - 21
IS - 6
UR - http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a14/
LA - ru
ID - MZM_1977_21_6_a14
ER -
%0 Journal Article
%A A. N. Trakhtman
%T AЁvariety of semigroups without an irreducible basis for identities
%J Matematičeskie zametki
%D 1977
%P 865-872
%V 21
%N 6
%U http://geodesic.mathdoc.fr/item/MZM_1977_21_6_a14/
%G ru
%F MZM_1977_21_6_a14
An example of a variety of semigroups not having an irreducible basis for identities is given. Also a variety of semigroups, the lattice of subvarieties of which contains a nonidentity element without any coverings, is constructed.
