Document Type

Article

Publication Date

12-19-2002

Abstract

We denote by Q(A) the set of all matrices with the same sign pattern as A. A matrix A has signed null-space provided there exists a set S of sign patterns such that the set of sign patterns of vectors in the null-space of (A) over tilde is S for each (A) over tilde is an element of Q (A). Some properties of matrices with signed null-spaces are investigated.

Publication Title

SIAM Journal on Matrix Analysis and Applications

DOI

10.1137/S0895479801396221

Included in

Mathematics Commons

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