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On finite completely simple semigroups having no finite basis of identities
The purpose of this note is to provide a correct proof of the fact that there exist finite completely simple semigroups having no finite basis of identities....
Pure mathematics
- 2018 •
- Jimp •
- Link
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Jimp - Článek v periodiku v databázi Web of Science
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On bases of identities of finite central locally orthodox completely regular semigroups
It has been known for a long time that every finite orthodox completely regular semigroup has a finite basis of identities, and that every finite central completely simple semigroup has a fini...
Pure mathematics
- 2021 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
Výsledek na webu
About the power pseudovariety PCS
The power pseudovariety PCS, that is, the pseudovariety of finite semigroups generated by all power semigroups of finite completely simple semigroups has recently simple semigroups
Pure mathematics
- 2021 •
- Jimp •
- Link
Rok uplatnění
Jimp - Článek v periodiku v databázi Web of Science
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An upper bound for the power pseudovariety PCS
It is a celebrated result in finite semigroup theory that the equality of pseudovarieties PG=BG holds, where PG is the pseudovariety of finite monoids generated by all power monoids of finite groups and BG is the p...
BA - Obecná matematika
- 2012 •
- Jx •
- Link
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Výsledek na webu
Regular solutions of language inequalities and well quasi-orders
By means of constructing suitable well quasi-orders of free monoids we prove that all maximal solutions of certain systems of language inequalities are regular. This way we deal with a wide class of systems of inequalities where all constants are lan...
BA - Obecná matematika
- 2005 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Regular solutions of language inequalities and well quasi-orders
By means of constructing suitable well quasi-orders of free monoids we prove that all maximal solutions of certain systems of language inequalities are regular. This way we deal with a wide class of systems of inequalities where all constants are lan...
BA - Obecná matematika
- 2004 •
- D
Rok uplatnění
D - Stať ve sborníku
Finite orthodox locally idempotent semigroups having no finite basis of biidentities
A finitely generated existence variety of orthodox locally idempotent semigroups is constructed which has no finite basis of biidentities within the class of all orthodox semigroups. In addition, ordinary semig...
BA - Obecná matematika
- 2003 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
On bases of identities of finite inverse semigroups with solvable subgroups
It is shown that every finite inverse semigroup having only solvable subgroups, viewed as a semigroup with the additional unary operation of inversion, has no finite basis of identities, unless it is a strict inver...
BA - Obecná matematika
- 2003 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
Semigroup Structure of Sets of Solutions to Equation X^m = X^s
of semigroups of the corresponding rings. In case of residually finite PID’s we employWe describe the semigroup and group structure of the set of solutions to equation X^m = X^s over the multiplicative semigroups ...
Pure mathematics
- 2018 •
- Jost •
- Link
Rok uplatnění
Jost - Ostatní články v recenzovaných periodicích
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Uncountably many varieties of completely simple semigroups with metabelian subgroups
of completely simple semigroups with metabelian subgroups has the cardinality of near varieties of idempotent generated completely simple semigroups. The mapping assigning to every variety V of completely simp...
BA - Obecná matematika
- 2006 •
- Jx
Rok uplatnění
Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
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