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На 14 май 2021 г. (петък) от 13:00 часа ще се проведе дистанционно заседание на семинара “Алгебра и логика”.

Доклад на тема

Non-finitely based and limit varieties of algebraic systems

ще изнесе Веселин Дренски.

Резюме. A variety of algebraic systems is non-finitely (or infinitely) based if it does not have a finite basis of identities. It is just-non-finitely based (or limit) if it is non-finitely based but all its proper subvarieties are finitely based. By the Zorn lemma every variety without a finite basis of identities contains a just-non-finitely based subvariety.

We survey results on non-finitely based varieties of groups, semigroups and on associative, Lie and nonassociative rings and algebras.
We also present examples of just-non-finitely based varieties of nonassociative algebras and varieties of pairs over fields of characteristic 0.

 

Семинарът ще се проведе посредством платформата Zoom и всеки желаещ може да се присъедини като последва линка:

https://us02web.zoom.us/j/85137375021?pwd=RE5QczdFTE1xL1R6MnI2b1lkcGczQT09 

Topic: Онлайн семинар на секция “Алгебра и логика”
Time: May 14, 2021 01:00 PM Sofia
Meeting ID: 851 3737 5021
Passcode: 035647

 

От секция „Алгебра и логика” на ИМИ – БАН
http://www.math.bas.bg/algebra/seminarAiL/
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