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JOURNALS // Chebyshevskii Sbornik // Archive

Chebyshevskii Sb., 2022 Volume 23, Issue 5, Pages 87–100 (Mi cheb1257)

On simultaneous approximations to the logarithms of primes

M. A. Korolev, I. S. Rezvyakova

Steklov Mathematical Institute of Russian Academy of Sciences (Moscow)

Abstract: In the first part of the paper, a modification of elementary Titchmarsh's method is applied to the proof of the local Kronecker's theorem. For any finite real sequence $\boldsymbol{\bar{\lambda}} = (\lambda_{1},\ldots,\lambda_{r})$ of linearly independent (over $\mathbb{Q}$) numbers and for any $\varepsilon>0$, this method leads to the explicit upper bound of the value $h = h(\varepsilon,\boldsymbol{\bar{\lambda}})$ with the following property: for any real sequence $\boldsymbol{\bar{\alpha}} = (\alpha_{1},\ldots,\alpha_{r})$, any interval of the length $h$ contains a point $t$ such that $\|t\lambda_{s}-\alpha_{s}\|\leqslant\varepsilon$, $1\leqslant s\leqslant r$. Such estimate is weaker than the best known, but it's proof is quite simple and leads to the same (in essence) results in the applications.
The second part contains the short memoirs concerning the academician Alexey Nikolaevich Parshin who passed away on June, 18 this year.

Keywords: local Kronecker's theorem, simultaneous approximations, logarithms of primes, squarefree numbers.

UDC: 517

Received: 25.10.2022
Accepted: 22.12.2022

DOI: 10.22405/2226-8383-2022-23-5-87-100



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© Steklov Math. Inst. of RAS, 2025