Geodesic
Chebyshev subspaces of Dirichlet series
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 6 (2023), pp. 17-23 
V. M. Fedorov. Chebyshev subspaces of Dirichlet series. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 6 (2023), pp. 17-23. http://geodesic.mathdoc.fr/item/VMUMM_2023_6_a2/
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     title = {Chebyshev subspaces of {Dirichlet} series},
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Voir la notice de l'article provenant de la source Math-Net.Ru

A. Haar and A. N. Kolmogorov found necessary and sufficient conditions under which finite-dimensional subspaces in the space of continuous functions on an arbitrary compact set are Chebyshev. In this paper, we prove that subspaces of Dirichlet series in the space of $C(0, \infty ]$ of continuous and bounded functions in the interval $(0, \infty )$ that have a limit at infinity form Chebyshev subspaces.

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