Matematičeskie zametki, Tome 15 (1974) no. 2, pp. 263-270
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A. I. Budkin. Semivarieties and Schreier varieties of unary algebras. Matematičeskie zametki, Tome 15 (1974) no. 2, pp. 263-270. http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a11/
@article{MZM_1974_15_2_a11,
author = {A. I. Budkin},
title = {Semivarieties and {Schreier} varieties of unary algebras},
journal = {Matemati\v{c}eskie zametki},
pages = {263--270},
year = {1974},
volume = {15},
number = {2},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a11/}
}
TY - JOUR
AU - A. I. Budkin
TI - Semivarieties and Schreier varieties of unary algebras
JO - Matematičeskie zametki
PY - 1974
SP - 263
EP - 270
VL - 15
IS - 2
UR - http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a11/
LA - ru
ID - MZM_1974_15_2_a11
ER -
%0 Journal Article
%A A. I. Budkin
%T Semivarieties and Schreier varieties of unary algebras
%J Matematičeskie zametki
%D 1974
%P 263-270
%V 15
%N 2
%U http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a11/
%G ru
%F MZM_1974_15_2_a11
A correction is provided for one result of a paper by Shafaat [1], and it is proven that the set of Schreier varieties of algebras $\left$ with two unary operations has the cardinality of the continuum.
