Presentations for monoids of endomorphisms of a star graph
Rings and Algebras
2025-01-03 v1 Combinatorics
Abstract
In this paper, we consider the monoids of all endomorphisms, of all weak endomorphisms, of all strong endomorphisms and of all strong weak endomorphisms of a star graph with a finite number of vertices. Our main objective is to exhibit a presentation for each of them.
Cite
@article{arxiv.2501.00222,
title = {Presentations for monoids of endomorphisms of a star graph},
author = {Vitor H. Fernandes and Jörg Koppitz and Tiwadee Musunthia},
journal= {arXiv preprint arXiv:2501.00222},
year = {2025}
}
Comments
math.RA. arXiv admin note: text overlap with arXiv:2410.21084