The regularity of the endomorphism monoid of a split graph. (Chinese. English summary) Zbl 0907.05047
Summary: The split graph with regular endomorphism monoid is characterized, and an open problem raised by Knauer is answered for split graphs.
MSC:
| 05C75 | Structural characterization of families of graphs |
| 20M20 | Semigroups of transformations, relations, partitions, etc. |
| 05C25 | Graphs and abstract algebra (groups, rings, fields, etc.) |
