Title
Membership of A ∨ G for classes of finite weakly abundant semigroups
Abstract
We consider the question of membership of A ∨ G, where A and G are the pseudovarieties of finite aperiodic semigroups, and finite groups, respectively. We find a straightforward criterion for a semigroup S lying in a class of finite semigroups that are weakly abundant, to be in A ∨ G. The class of weakly abundant semigroups contains the class of regular semigroups, but is much more extensive; we remark that any finite monoid with semilattice of idempotents is weakly abundant. To study such semigroups we develop a number of techniques that may be of interest in their own right.
Year
DOI
Venue
2009
10.1007/s10998-009-9009-1
Periodica Mathematica Hungarica
Keywords
Field
DocType
weakly abundant,band,fundamental,weakly adequate,bountiful,A,∨,G,20M10
Topology,Mathematical analysis,Monoid,Semilattice,Special classes of semigroups,Semigroup,Aperiodic graph,Mathematics
Journal
Volume
Issue
ISSN
59
1
0031-5303
Citations 
PageRank 
References 
1
0.61
2
Authors
3
Name
Order
Citations
PageRank
John Fountain191.58
Gracinda Gomes210.61
Victoria Gould3136.04