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On strong Z-matrices

โœ Scribed by A. Chandrashekaran; T. Parthasarathy; G. Ravindran


Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
120 KB
Volume
432
Category
Article
ISSN
0024-3795

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A square real matrix A is called a strong sign nonsingular matrix (or "S2NS "" rnatrixl if all matrices with the same sign pattern as A are nonsingular and lhe inverses of these matrices all have the same sign pattern. A digraph which is the underlying digraph of the signed digraph of an S"NS matrix