Explicit Zolotarev-based pole choices for rational Krylov evaluation of Stieltjes matrix functions yield proven convergence rates, including Kronecker-structured cases.
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Rational Krylov for Stieltjes matrix functions: convergence and pole selection
Explicit Zolotarev-based pole choices for rational Krylov evaluation of Stieltjes matrix functions yield proven convergence rates, including Kronecker-structured cases.