Geodesic
Sharpening of the Universality Inequality
Matematičeskie zametki, Tome 96 (2014) no. 6, pp. 905-910.

Voir la notice de l'article provenant de la source Math-Net.Ru

The universality theorem asserts that the lower density of any set of shifts of the Riemann zeta-function which approximate a given analytic function with accuracy $\varepsilon>0$ is strictly positive. It is proved that this set has strictly positive density for all but at most countably many $\varepsilon>0$.
Keywords: universality theorem, universality inequality, Riemann zeta-function, approximation of analytic functions. 
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A. Laurinčikas; L. Meška. Sharpening of the Universality Inequality. Matematičeskie zametki, Tome 96 (2014) no. 6, pp. 905-910. http://geodesic.mathdoc.fr/item/MZM_2014_96_6_a9/

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