The Smith group of the hypercube graph
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Abstract
The n-cube graph is the graph on the vertex set of n-tuples of 0s and 1s, with two vertices joined by an edge if and only if the n-tuples differ in exactly one component. We compute the Smith group of this graph, or, equivalently, the elementary divisors of an adjacency matrix of the graph.
Keywords
Hypercube Association scheme Smith normal formMathematics Subject Classification
05E30Notes
Acknowledgments
This work was partially supported by a Grant from the Simons Foundation (#204181 to Peter Sin). The work of the third author (Qing Xiang) was partially supported by an NSF grant, DMS-1600850.
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