We look for the maximum order of a square (0, 1)-matrix A with a fixed rank r, provided A has no repeated rows or columns. If A is the adjacency matrix of a graph, Kotlov and Lovász [J. Graph Theory 23, 1996] proved that the maximum order equals Θ(2r/2). In this note we show that this result remains correct if A is symmetric, but becomes false if symmetry is not required.
|Place of Publication||Tilburg|
|Publication status||Published - 2011|
|Name||CentER Discussion Paper|