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from Part Three - Complementary Topics
Published online by Cambridge University Press: 31 March 2022
The stability of the Christoffel-Darboux kernel under small perturbations of the generating measure is established via precise quantitative bounds. Trace-class perturbations of the Hessenberg matrix attached to a 2D measure are linked to the asymptotic invariance of the Christoffel function, in an exact separation algorithm of outliers from clouds formed by bounded point evaluations for complex analytic functions.
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