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Cancellable elements of the lattice of semigroup varieties: varieties satisfying a permutational identity of length 3
Published 13 Jun 2018 in math.GR | (1806.05972v4)
Abstract: We completely determine all semigroup varieties satisfiyng a permutational identity of length 3 that are cancellable elements of the lattice of all semigroup varieties. Using this result, we provide a series of new examples of semigroup varieties that are a modular but not cancellable elements of this lattice.
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