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COMPLETION FOR TIGHT SIGN-CENTRAL MATRICES
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 Title & Authors
COMPLETION FOR TIGHT SIGN-CENTRAL MATRICES
Cho, Myung-Sook; Hwang, Suk-Geun;
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 Abstract
A real matrix A is called a sign-central matrix if for, every matrix with the same sign pattern as A, the convex hull of columns of contains the zero vector. A sign-central matrix A is called a tight sign-central matrix if the Hadamard (entrywise) product of any two columns of A contains a negative component. A real vector x
 Keywords
sign-central mztrix;tight sign-central matrix;
 Language
English
 Cited by
 References
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2.
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3.
S.-G. Hwang, I.-P. Kim, S.-J. Kim and X. D. Zhang, Tight sign-central matrices, Linear Algebra Appl. 371 (2003), 225-240 crossref(new window)

4.
S.-G. Hwang, I.-P. Kim, S.-J. Kim and S.-G. Lee, The number of zeros of a tight sign-central matrix, Linear Algebra Appl. 407 (2005), 296-310 crossref(new window)