Relations on a lattice of varieties of completely regular semigroups
Completely regular semigroups $\mathcal{CR}$ are considered here with the unary operation of inversion within the maximal subgroups of the semigroup. This makes $\mathcal{CR}$ a variety; its lattice of subvarieties is denoted by $\mathcal{L(CR)}$. We study here the relations ${\mathbf K,T,L}$ and ${...
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| Format: | Article |
| Language: | English |
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Institute of Mathematics of the Czech Academy of Science
2020-10-01
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| Series: | Mathematica Bohemica |
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| Online Access: | http://mb.math.cas.cz/full/145/3/mb145_3_1.pdf |