Retractions and homomorphisms on some operations of graphs. (English) Zbl 1487.05222
Summary: The aim of the present article is to introduce and study a new type of operations on graph, namely, edge graph. The relation between the homomorphisms and retractions on edge graphs is deduced. The limit retractions on the edge graphs are presented. Retractions on a finite number of edge graphs are obtained.
MSC:
| 05C76 | Graph operations (line graphs, products, etc.) |
| 57M05 | Fundamental group, presentations, free differential calculus |
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