For citation:
Rubinstein A. I., Telyakovskii D. S. On functions of van der Waerden type. Izvestiya of Saratov University. Mathematics. Mechanics. Informatics, 2023, vol. 23, iss. 3, pp. 339-347. DOI: 10.18500/1816-9791-2023-23-3-339-347, EDN: BUXAKG
This is an open access article distributed under the terms of Creative Commons Attribution 4.0 International License (CC-BY 4.0).
Published online:
31.08.2023
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Russian
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Article
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517.518.153
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BUXAKG
On functions of van der Waerden type
Autors:
Rubinstein Aleksandr I., National Research Nuclear University MEPhI
Telyakovskii Dmitrii S., National Research Nuclear University MEPhI
Abstract:
Let ω(t) be an arbitrary modulus of continuity type function, such that ω(t)/t→+∞, as t→+0. We construct a continuous nowhere-differentiable function Vω(x), x∈[0;1], that satisfies the following conditions: 1) its modulus of continuity satisfies the estimate O(ω(t)) as t→+0; 2) for some positive c at each point x0 holds lim sup as x\to x_0; 3) at each point x_0 holds \liminf{|V_\omega(x){-}V_\omega(x_0)|}\big/{\omega(|x{-}x_0|)}=0 as x\to x_0.
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Received:
26.04.2022
Accepted:
04.11.2022
Published:
31.08.2023
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