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arXiv:math/0303084 [math.CO]AbstractReferencesReviewsResources

Graphs of unitary matrices

Simone Severini

Published 2003-03-07, updated 2005-12-17Version 3

The support of a matrix M is the (0,1)-matrix with ij-th entry equal to 1 if the ij-th entry of M is non-zero, and equal to 0, otherwise. The digraph whose adjacency matrix is the support of M is said to be the digraph of M. This paper observes some structural properties of digraphs of unitary matrices.

Comments: 19 pages. Accepted for publication in Ars Combinatoria
Categories: math.CO, quant-ph
Subjects: 05C50, 05C25
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