Idempotents and one-sided units in infinite partial Brauer monoids

JOURNAL OF ALGEBRA

卷:534

Article

East, James^1,2 

[1] Western Sydney Univ, Ctr Res Math, Locked Bag 1797, Penrith, NSW 2751, Australia

[2] Western Sydney Univ, Sch Comp Engn & Math, Locked Bag 1797, Penrith, NSW 2751, Australia

关键词: Diagram monoids;    Partial Brauer monoids;    Partition monoids;    Idempotents;    Units;    Rank;    Relative rank;    Sierpinski rank;    Semigroup Bergman property;   

DOI  :  10.1016/j.jalgebra.2019.05.034

来源: Elsevier

【 摘 要 】

We study monoids generated by various combinations of idempotents and one- or two-sided units of an infinite partial Brauer monoid. This yields a total of eight such monoids, each with a natural characterisation in terms of relationships between parameters associated to Brauer graphs. We calculate the relative ranks of each monoid modulo any other such monoid it may contain, and then apply these results to determine the Sierpiniski rank of each monoid, and ascertain which ones have the semigroup Bergman property. We also make some fundamental observations about idempotents and units in arbitrary monoids, and prove some general results about relative ranks for submonoids generated by these sets. (C) 2019 Elsevier Inc. All rights reserved.

【 授权许可】

Free