Mathematics – Combinatorics
Scientific paper
2008-01-18
Mathematics
Combinatorics
23 pages, 5 figures, 1 Sage program
Scientific paper
The structure of all graphs having minimum rank at most k over a finite field
with q elements is characterized for any possible k and q. A strong connection
between this characterization and polarities of projective geometries is
explained. Using this connection, a few results in the minimum rank problem are
derived by applying some known results from projective geometry.
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