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Semigroup varieties closed for the Bruck extension
Published online by Cambridge University Press: 18 May 2009
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We shall show that there exists a chain, order isomorphic to the chain of real numbers, of semigroup varieties closed for the Bruck extension. The least semigroup variety closed for the Bruck extension will be obtained as the union of varieties in an infinite chain of semigroup varieties.
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- Copyright © Glasgow Mathematical Journal Trust 1994