In the mathematical discipline of graph theory, a graph C is a covering graph of another graph G if there is a covering map from the vertex set of C to the vertex set of G. A covering map f is a surjection and a local isomorphism: the neighbourhood of a v vertex in C is mapped bijectively onto the neighbourhood of f(v) in G. Note that a covering in graph theory may also refer to an unrelated concept, a subset of vertices that touches all edges.
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- In the mathematical discipline of graph theory, a graph C is a covering graph of another graph G if there is a covering map from the vertex set of C to the vertex set of G. A covering map f is a surjection and a local isomorphism: the neighbourhood of a v vertex in C is mapped bijectively onto the neighbourhood of f(v) in G. Note that a covering in graph theory may also refer to an unrelated concept, a subset of vertices that touches all edges.
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- In the mathematical discipline of graph theory, a graph C is a covering graph of another graph G if there is a covering map from the vertex set of C to the vertex set of G. A covering map f is a surjection and a local isomorphism: the neighbourhood of a v vertex in C is mapped bijectively onto the neighbourhood of f(v) in G. Note that a covering in graph theory may also refer to an unrelated concept, a subset of vertices that touches all edges.
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