Geodesic
New two-sided bounds for the Perron root and related nonsingularity criteria
Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXXIII, Tome 496 (2020), pp. 120-137 
L. Yu. Kolotilina. New two-sided bounds for the Perron root and related nonsingularity criteria. Zapiski Nauchnykh Seminarov POMI, Computational methods and algorithms. Part XXXIII, Tome 496 (2020), pp. 120-137. http://geodesic.mathdoc.fr/item/ZNSL_2020_496_a9/
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     author = {L. Yu. Kolotilina},
     title = {New two-sided bounds for the {Perron} root and related nonsingularity criteria},
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     url = {http://geodesic.mathdoc.fr/item/ZNSL_2020_496_a9/}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

New general upper and lower bounds for the Perron root of a nonnegative matrix, which involve nonempty proper subsets of the index set and the matrix sparsity pattern, are suggested, and some special cases are considered. Also the nonsingularity criteria related to the upper bounds presented, which generalize some known results on subclasses of nonsingular $\mathcal{H}$-matrices, are derived.

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