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Cancellable elements in the lattice of overcommutative semigroup varieties (1902.04576v2)
Published 12 Feb 2019 in math.GR
Abstract: We completely determine all cancellable elements in the lattice OC of overcommutative semigroup varieties. In particular, we prove that an overcommutative semigroup variety is a cancellable element of the lattice OC if and only if it is a neutral element of this lattice
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