Generic properties of the lower spectral radius for some low-rank pairs of matrices
Generic properties of the lower spectral radius for some low-rank pairs of matrices
复制标题
一些低秩矩阵对的下谱半径的一般性质
DOI:
10.1016/j.laa.2017.02.023
复制
发表时间:
2017
影响因子:
1.1
通讯作者:
Morris I
中科院分区:
文献类型:
--
作者:
Morris I
The lower spectral radius of a set of d× d matrices is defined to be the minimum possible exponential growth rate of long products of matrices drawn from that set. When considered as a function of a finite set of matrices of fixed cardinality it is known that the lower spectral radius can vary discontinuously as a function of the matrix entries. In a previous article the author and J. Bochi conjectured that when considered as a function on the set of all pairs of 2× 2 real matrices, the lower spectral radius is discontinuous on a set of positive (eight-dimensional) Lebesgue measure, and related this result to an earlier conjecture of Bochi and Fayad. In this article we investigate the continuity of the lower spectral radius in a simplified context in which one of the two matrices is assumed to be of rank one. We show in particular that the set of discontinuities of the lower spectral radius on the set of pairs of 2× 2 real matrices has positive seven-dimensional Lebesgue measure, and that among the pairs of matrices studied, the finiteness property for the lower spectral radius is true on a set of full Lebesgue measure but false on a residual set.
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DOI:
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发表时间:
2010-06
期刊:
ArXiv
影响因子:
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作者:
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通讯作者:
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影响因子:
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DOI:
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发表时间:
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期刊:
arXiv: Dynamical Systems
影响因子:
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作者:
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通讯作者:
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影响因子:
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DOI:
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发表时间:
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期刊:
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影响因子:
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