Entire functions that have the smallest deviation from zero with respect to the uniform norm with weight
Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 41, Tome 416 (2013), pp. 98-107
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P. L. Chebyshev solved the problem of finding a polynomial of degree $n$ with leading coefficient one that has the smallest deviation from zero with respect to the maximum norm. A similar problem can be solved for some classes of entire functions. We find the entire function of exponential type $\sigma$ such that for any nonzero entire function $Q$ of type less than $\sigma$ and of class $A$ we have $$ \sup_\mathbb R\left|\frac{f_\sigma-Q}{\rho_m}\right|>\sup_\mathbb R\left|\frac{f_\sigma}{\rho_m}\right|. $$
@article{ZNSL_2013_416_a4,
author = {A. V. Gladkaya},
title = {Entire functions that have the smallest deviation from zero with respect to the uniform norm with weight},
journal = {Zapiski Nauchnykh Seminarov POMI},
pages = {98--107},
year = {2013},
volume = {416},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/ZNSL_2013_416_a4/}
}
TY - JOUR AU - A. V. Gladkaya TI - Entire functions that have the smallest deviation from zero with respect to the uniform norm with weight JO - Zapiski Nauchnykh Seminarov POMI PY - 2013 SP - 98 EP - 107 VL - 416 UR - http://geodesic.mathdoc.fr/item/ZNSL_2013_416_a4/ LA - ru ID - ZNSL_2013_416_a4 ER -
A. V. Gladkaya. Entire functions that have the smallest deviation from zero with respect to the uniform norm with weight. Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 41, Tome 416 (2013), pp. 98-107. http://geodesic.mathdoc.fr/item/ZNSL_2013_416_a4/
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