SOME OPERATORS THAT PRESERVE THE LOCALITY OF A PSEUDOVARIETY OF SEMIGROUPS

ALFREDO COSTA, ANA ESCADA
2013 International journal of algebra and computation  
It is shown that if V is a local monoidal pseudovariety of semigroups, then K(m)V, D(m)V and LI(m)V are local. Other operators of the form Z(m)(_) are considered. In the process, results about the interplay between operators Z(m)(_) and (_)*D_k are obtained.
doi:10.1142/s0218196713500112 fatcat:6jvwzr4rmbewpa2w4tai7k2gty