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math.NA2021
Fast optimization of viscosities for frequency-weighted damping of second-order systems
Nevena Jakovcevic Stor, Tim Mitchell, Zoran Tomljanovic +1
We consider frequency-weighted damping optimization for vibrating systems described by a second-order differential equation. The goal is to determine viscosity values such that eig…
math.NA2020
Convergence rate analysis and improved iterations for numerical radius computation
Tim Mitchell
The main two algorithms for computing the numerical radius are the level-set method of Mengi and Overton and the cutting-plane method of Uhlig. Via new analyses, we explain why the…