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Dynamics of the QR-flow for upper Hessenberg real matrices

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We investigate the main phase space properties of the QR-flow when restricted to upper Hessenberg matrices. A complete description of the linear behavior of the equilibrium matrices is given. The main result classifies the possible $\alpha$ - and $\omega$-limits of the orbits for this system. Furthermore, we characterize the set of initial matrices for which there is convergence towards an equilibrium matrix. Several numerical examples show the different limit behavior of the orbits and illustrate the theory.

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American Institute of Mathematical Sciences (AIMS)

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Discrete and Continuous Dynamical Systems-Series B, 2021, vol. 26, num. 3, p. 1359-1403

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(c) American Institute of Mathematical Sciences (AIMS), 2021

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Articles publicats en revistes (Matemàtiques i Informàtica)

# metadata.dc.title[].value
Dynamics of the QR-flow for upper Hessenberg real matrices