2003/03/07 by Simone Severini, Severini, Simone
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Combinatorics (math.CO) #FOS: Mathematics #FOS: Physical sciences #Graph theory and applications #Matrix Theory and Algorithms #Primary 05C50 #Quantum Physics (quant-ph) #Secondary 05C25 #graph theory and CDMA systems #math.CO #msc:05C25 #msc:05C50 #quant-ph
paper · pdf · doi:10.48550/arxiv.math/0303084
19 pages. Accepted for publication in Ars Combinatoria
openalex publication_date 2003/03/07 · arxiv created 2005/12/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.