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Demidirectly closed pseudovarieties of locally trivial semigroups

โœ Scribed by Jorge Almeida


Book ID
110560468
Publisher
Springer
Year
1990
Tongue
English
Weight
387 KB
Volume
40
Category
Article
ISSN
0037-1912

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On semidirectly closed pseudovarieties o
โœ M.Lurdes Teixeira ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 193 KB

The aim of this work is to study the unknown intervals of the lattice of aperiodic pseudovarieties which are semidirectly closed and answer questions proposed by Almeida in his book "Finite Semigroups and Universal Algebra". The main results state that the intervals [V \* (B2); ER โˆฉ LR] and [V \* (B