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    题名: Linear equations over cones and Collatz-Wielandt numbers
    作者: Tam, Bit-Shun;Schneider, Hans
    贡献者: 淡江大學數學學系
    关键词: Cone-preserving map;Perron–Frobenius theory;Local spectral radius;Local Perron–Schaefer condition;Nonnegative matrix;Collatz–Wielandt number;Collatz–Wielandt set;Alternating sequence
    日期: 2003-04
    上传时间: 2013-06-13 11:24:48 (UTC+8)
    出版者: Philadelphia: Elsevier Inc.
    摘要: Let K be a proper cone in , let A be an n×n real matrix that satisfies AK⊆K, let b be a given vector of K, and let λ be a given positive real number. The following two linear equations are considered in this paper: (i) , and (ii) (A−λIn)x=b, x∈K. We obtain several equivalent conditions for the solvability of the first equation. For the second equation we give an equivalent condition for its solvability in case when λ>ρb(A), and we also find a necessary condition when λ=ρb(A) and also when λ<ρb(A), sufficiently close to ρb(A), where ρb(A) denotes the local spectral radius of A at b. With λ fixed, we also consider the questions of when the set (A−λIn)K∩K equals {0} or K, and what the face of K generated by the set is. Then we derive some new results about local spectral radii and Collatz–Wielandt sets (or numbers) associated with a cone-preserving map, and extend a known characterization of M-matrices among Z-matrices in terms of alternating sequences.
    關聯: Linear Algebra and Its Applications 363, pp.295-332
    DOI: 10.1016/S0024-3795(01)00565-1
    显示于类别:[數學學系暨研究所] 期刊論文

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