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Minimal group-universal varieties of semigroups

✍ Scribed by P. Goralčík; V. Koubek


Publisher
Springer
Year
1985
Tongue
English
Weight
583 KB
Volume
21
Category
Article
ISSN
0002-5240

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Minimal Noncryptic e-Varieties of Regula
✍ F. Pastijn; M.V. Volkov 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 182 KB

We describe all minimal noncryptic e-varieties of regular semigroups, thus generalising earlier results by Rasin and Reilly that dealt with the completely regular and the inverse cases, respectively. As corollaries, we prove that an e-variety of regular semigroups is cryptic if and only if its inter