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On certain finitely based varieties of semigroups

✍ Scribed by Charles C. Edmunds


Publisher
Springer
Year
1977
Tongue
English
Weight
825 KB
Volume
15
Category
Article
ISSN
0037-1912

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Sums of finitely based lattice varieties
✍ Bjarni JΓ³nsson πŸ“‚ Article πŸ“… 1974 πŸ› Elsevier Science 🌐 English βš– 733 KB

This paper is concerned with the question whether the lattice sum (join) V $ V' of two finitely based lattice varieties V and V' is finitely based. An example is constructed showing that this is not always the case. On the other hand, it is proved that if V C M and (V')\* = (N)', then V + V' is fin