Results 51 to 54 of about 448 (54)

The higher rank numerical range of nonnegative matrices

Open Mathematics, 2013
Aretaki Aikaterini, Maroulas Ioannis
doaj   +1 more source

Inertias and ranks of some Hermitian matrix functions with applications

Open Mathematics, 2012
Zhang Xiang, Wang Qing-Wen, Liu Xin
doaj   +1 more source

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ON THE IRREDUCIBILITY, SELF-DUALITY, AND NON-HOMOGENEITY OF COMPLETELY POSITIVE CONES

, 2013
. For a closed cone Cin R n , the completely positive cone of Cis the convex cone K C in S n generated by fuu T : u2Cg. Such a cone arises, for example, in the conic LP reformula-tion of a nonconvex quadratic minimization problem over an arbitrary set ...
M. Gowda, R. Sznajder
semanticscholar   +1 more source

Kwong matrices and operator monotone functions on $(0,1)$

, 2014
In this paper we study positive operator monotone functions on (0, 1) which have some differences from those on (0,∞) : we show that for a concave operator monotone function f on (0, 1), the Kwong matrices Kf (s1, . . .
Juri Morishita, T. Sano, S. Tachibana
semanticscholar   +1 more source