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Joins of Pseudovarieties in Semigroups by S Kumar is a document available to read on EtoBox.

This document summarizes some results on calculating joins of pseudovarieties of semigroups. It proves that: a) The join of the pseudovariety of finite groups G with the pseudovariety of finite commutative semigroups Com is the pseudovariety of all finite semigroups where idempotents are central, denoted ZE. b) The join of G with the pseudovariety of finite nilpotent semigroups N intersected with Com is the pseudovariety of nilpotent extensions of groups, denoted IE. These results are proved using a syn

Author

S Kumar

Language

EN