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E-Unitary Covers over Group Varieties |
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| Authors: | M Hartmann |
| Institution: | (1) Bolyai Institute, University of Szeged, Szeged, Aradi vértanúk tere 1, Hungary |
| Abstract: | In this paper we show that for every nontrivial group variety V different from the variety of all groups, there exists an E-unitary regular semigroup whose greatest group homomorphic image belongs to V, but it has no embeddable E-unitary cover over V. |
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