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05/21/2022
Unitarity of some barycentric rational approximants
The exponential function maps the imaginary axis to the unit circle and,...
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05/03/2022
A review of the Separation Theorem of Chebyshev-Markov-Stieltjes for polynomial and some rational Krylov subspaces
The accumulated quadrature weights of Gaussian quadrature formulae const...
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04/05/2021
Efficient Magnus-type integrators for solar energy conversion in Hubbard models
Strongly interacting electrons in solids are generically described by Hu...
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01/31/2020