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ELA

SPACES OF CONSTANT RANK MATRICES OVER

GF

(2)

∗

NIGEL BOSTON†

Abstract. For eachn, we consider whether there exists an (n+ 1)-dimensional space ofnbyn

matrices overGF(2) in which each nonzero matrix has rankn−1. Examples are given forn= 3,4,

and 5, together with evidence for the conjecture that none exist forn >8.

Key words. Constant rank, Matrices, Heuristics.

AMS subject classifications.15A03, 15-04.

∗Received by the editors September 11, 2009. Accepted for publication December 8, 2009.

Han-dling Editor: Bryan L. Shader.

†Department of Mathematics, University of Wisconsin, Madison, WI 53706, USA

([email protected]). Supported by the Claude Shannon Institute, Science Foundation Ireland Grant 06/MI/006 and Stokes Professorship award, Science Foundation Ireland Grant 07/SK/I1252b.

Electronic Journal of Linear Algebra ISSN 1081-3810 A publication of the International Linear Algebra Society Volume 20, pp. 1-5, January 2010

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