• POLARITY IN SIGNED ORDER – PRESERVING AND ORDER – DECREASING SEMIGROUP

*MOGBONJU, M.M., OGUNLEKE, I.A.

Abstract


Let  be a transformation from the set, then the signed (partial) transformation semigroup is defined in the  where  and   The paper aimed at investigate the polarity of elements in these semigroup.


Keywords


polarity, semigroup, signed order – preserving semigroup, signed order decreasing – semigroup.

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