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- W3162783100 abstract "In the paper we represent two examples which are based on the properties of discrete measures. In the first part of the paper we prove that for each probability measure $mu$, $operatorname{supp}{mu}=[-1,1]$, which logarithmic potential is a continuous function on $[-1,1]$ there exists a (discrete) measure $sigma=sigma(mu)$, $operatorname{supp}{sigma}=[-1,1]$, with the following property. Let ${P_n(x;sigma)}$ be the sequence of polynomials orthogonal with respect to $sigma$. Then $dfrac1nchi(P_n(cdot;sigma))overset{*}tomu$, $ntoinfty$, where $chi(cdot)$ is zero counting measure for the corresponding polynomial. The construction of the measure $sigma$ is based of the properties of weighted Leja points. In the second part we give an example of a compact set and a sequence of discrete measures supported on that compact set with the following property. The sequence of measures converges in weak-$*$ topology to the equilibrium measure for the compact set but the corresponding sequence of the logarithmic potentials does not converge to the equilibrium potential in any neighbourhood of the compact set." @default.
- W3162783100 created "2021-05-24" @default.
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- W3162783100 date "2021-05-14" @default.
- W3162783100 modified "2023-09-27" @default.
- W3162783100 title "Two examples based on the properties of discrete measures" @default.
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