Yizhi Chen
Abstract
The paper showed that a semigroup S was a normal orthocryptou semigroup if and only if it was a strong semilattice of rectangular u-semigroups.Also,by this result,the paper gives a lot of corresponding corollaries in the range of abundant and regular semigroups.
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The paper showed that a semigroup S was a normal orthocryptou semigroup if and only if it was a strong semilattice of rectangular u-semigroups.Also,by this result,the paper gives a lot of corresponding corollaries in the range of abundant and regular semigroups.
Key concepts: Semilattice, Semigroup, Mathematics, Pure mathematics, Special classes of semigroups, Range (aeronautics), Algebra over a field, Discrete mathematics