I PRIKLADNAYA MATEMATIKA
(FUNDAMENTAL AND APPLIED MATHEMATICS)
2000, VOLUME 6, NUMBER 3, PAGES 889-902
A. V. Tishchenko
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We have found the necessary and sufficient conditions on
semigroups under which their extended standard wreath product
generates a variety of finite index.
Further, the similar problem is solved for varieties of
completely simple semigroups.
Finally, the necessary and sufficient conditions on
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Last modified: December 8, 2000