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Graph covering and its generalization. (English) Zbl 0947.05026

Summary: We present some topics on graph covering and its generalization. We survey some results on enumeration of isomorphism classes of coverings of a graph and \(g\)-cyclic \(A\)-covers of a symmetric digraph, where \(A\) is a finite group and \(g\in A\). We also mention some related questions.

MSC:

05C10 Planar graphs; geometric and topological aspects of graph theory
05C30 Enumeration in graph theory
05C20 Directed graphs (digraphs), tournaments
05C25 Graphs and abstract algebra (groups, rings, fields, etc.)
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