- Citation:
- Dimitrova, I., Vítor H. Fernandes, J. Koppitz, and T. M. Quinteiro. "On monoids of endomorphisms of a cycle graph." (Submitted).

### Abstract:

In this paper we consider endomorphisms of an undirected cycle graph from Semigroup Theory perspective. Our main aim is to present a process to determine sets of generators with minimal cardinality for the monoids $wEnd(C_n)$ and $End(C_n)$ of all weak endomorphisms and all endomorphisms of an undirected cycle graph $C_n$ with $n$ vertices. We also describe Green's relations and regularity of these monoids and calculate their cardinalities.

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