Displaying similar documents to “Principal two-sided ideals in the direct product of two semigroups”

One-sided principal ideals in the direct product of two semigroups

Imrich Fabrici (1993)

Mathematica Bohemica

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A necessary and sufficient condition is given for a) a principal left ideal L ( s , t ) in S × T to be equal to the direct product of the corresponding principal left ideals L ( s ) × L ( t ) , b) an -class L ( s , t ) to be equal to the direct product of the corresponding -classes L s × L t .