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- W4300482356 abstract "In their recent paper The spectral norm of a Horadam circulant matrix, Merikoski, Haukkanen, Mattila and Tossavainen study under which conditions the spectral norm of a general real circulant matrix ${bf C}$ equals the modulus of its row/column sum. We improve on their sufficient condition until we have a necessary one. Our results connect the above problem to positivity of sufficiently high powers of the matrix ${bf C^top C}$. We then generalize the result to complex circulant matrices." @default.
- W4300482356 created "2022-10-03" @default.
- W4300482356 creator A5016021916 @default.
- W4300482356 date "2018-03-26" @default.
- W4300482356 modified "2023-09-24" @default.
- W4300482356 title "Circulant matrices: norm, powers, and positivity" @default.
- W4300482356 doi "https://doi.org/10.48550/arxiv.1803.09526" @default.
- W4300482356 hasPublicationYear "2018" @default.
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