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Title
Xor-Magic Graphs
Authors
Jacob A. Siehler
Abstract
A connected graph on 2n vertices is defined to be xor-magic if the vertices can be labeled with distinct n-bit binary numbers in such a way that the label at each vertex is equal to the bitwise xor of the labels on the adjacent vertices.  We show that there is at least one 3-regular xor-magic graph on 2n vertices for every n≥2. We classify the 3-regular xor-magic graphs on 8 and 16 vertices, and give multiple examples of 3-regular xor-magic graphs on 32 vertices, including the well-known Dyck graph.
Keywords
cubic graph, regular graph, graph theory, combinatorics, linear algebra, binary, xor
Milestones
Published: 2019/10/14
Author Details
Jacob A. Siehler
jsiehler@gustavus.edu
Gustavus Adolphus College

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