J 1999

On existence varieties of E-solid semigroups

KAĎOUREK, Jiří and Mária B. SZENDREI

Basic information

Original name

On existence varieties of E-solid semigroups

Authors

KAĎOUREK, Jiří (203 Czech Republic, guarantor) and Mária B. SZENDREI

Edition

Semigroup Forum, New York, Springer-Verlag, 1999, 0037-1912

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10101 Pure mathematics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 0.238

RIV identification code

RIV/00216224:14310/99:00001274

Organization unit

Faculty of Science

UT WoS

000077052500003

Keywords in English

existence varieties of regular semigroups; bifree objects; regular E-solid semigroups; regular locally orthodox semigroups
Změněno: 6/5/2009 15:08, doc. RNDr. Jiří Kaďourek, CSc.

Abstract

V originále

Within the class of regular E-solid semigroups, a theory of e-varieties including appropriate notions of biidentities and biinvariant congruences is presented, such that, together with bifree objects, these notions inherit the properties and interrelations well known from universal algebra. This theory generalizes the previously developed such theory for orthodox semigroups.
As an application, the bifree objects in certain e-varieties of E-solid locally orthodox semigroups, which are constructed by means of Malcev products from varieties of bands, groups and completely simple semigroups, are described as subsemigroups in suitable Pastijn products of some bands by relatively bifree completely simple semigroups. As a consequence, it follows that every regular E-solid locally orthodox semigroup regularly divides a so-called solid Pastijn product of a band by a completely simple semigroup.

Links

GA201/93/2121, research and development project
Name: Třídy regulárních pologrup
Investor: Czech Science Foundation, Classes of Regular Semigroups