Good congruences on weakly ample semigroups
The concept of normal congruence on a weakly ample semigroup S is introduced and the maximum and minimum admissible congruences whose trace is the normal congruence on a weakly ample semigroup S are characterized in this paper. Some results about congruences on ample semigroups are generalized to weakly ample semigroups.
2014 ◽
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2011 ◽
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1954 ◽
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1982 ◽
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