Symmetry Parameters of Two-Generator Circulant Graphs
Sally Cockburn, Sarah Loeb
Abstract
Open-access reader
Sally Cockburn, Sarah Loeb
Abstract
Open-access reader
The derived graph of a voltage graph consisting of a single vertex and two loops of different voltages is a circulant graph with two generators. We characterize the automorphism groups of connected, two-generator circulant graphs, and give their determining and distinguishing number, and when relevant, their cost of 2-distinguishing. We do the same for the subdivisions of connected, two-generator circulant graphs obtained by replacing one loop in the voltage graph with a directed cycle.
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The derived graph of a voltage graph consisting of a single vertex and two loops of different voltages is a circulant graph with two generators. We characterize the automorphism groups of connected, two-generator circulant graphs, and give their determining and distinguishing number, and when relevant, their cost of 2-distinguishing. We do the same for the subdivisions of connected, two-generator circulant graphs obtained by replacing one loop in the voltage graph with a directed cycle.
Key concepts: Circulant matrix, Circulant graph, Combinatorics, Vertex (graph theory), Generator (circuit theory), Mathematics, Discrete mathematics, Graph