Chebyshevskii Sbornik
RUS  ENG    JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB  
General information
Latest issue
Archive

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



Chebyshevskii Sb.:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register


Chebyshevskii Sbornik, 2015, Volume 16, Issue 3, Pages 78–94 (Mi cheb410)  

Distribution of algebraic points in domains of small measure and near the surfaces

V. I. Bernika, A. G. Gusakovaa, A. V. Ustinovb

a Institute of Mathematics of the National Academy of Sciences of Belarus
b Khabarovsk Division of the Institute for Applied Mathematics, Far Eastern Branch, Russian Academy of Sciences
References:
Abstract: Some questions about distribution of the points with rational coordinates are natural generalizations of problems about integer points in convex domains. Upper and lower bounds for the quantity of rational points on the circle were used in the study of Hausdorff dimension of the set of the point on circle which are approximated with a given order of accuracy by the points with rational coordinates. During the last 15 years in the papers of M. Huxley, V. I. Bernik, V. V. Beresnevich, S. Velani, R. Vaughan double sided asymptotic estimates for the quantity of rational points near the smooth curves and surfaces were found.
Let $I=[a,b]\in\mathbb{R}$ is an interval, $y=f(x)$ is twice continuously differentiable function which satisfies the inequality
$$ c_1<|f''(x)|<c_2 $$
for $c_2>c_1>0$ and for all $x\in I$. For arbitrary $\gamma$, $0\leq\gamma< 1$ for sufficiently large $Q$ we denote by $A_I(Q,\gamma)$ the set of rational points $\Gamma=\left(\frac{p_1}{q},\frac{p_2}{q}\right)$, $aq\leq p_1\leq bq$, $1\leq q\leq Q$, for witch the following inequality holds
$$ \left|f\left(\frac{p_1}{q}\right)-\frac{p_2}{q}\right|<Q^{-1-\gamma}. $$
The set $A_I(Q,\gamma)$ consists from points lying inside the strip width of $2Q^{-\gamma}$ near the curve $y=f(x)$, $x\in I$. It it natural to expect that $\#A_I(Q,\gamma)$ is a value of the order $Q^{3-\gamma}$. It was proved using the methods of geometry of numbers and metric theory of Diophantine approximations.
Recently [1] new estimates of the quantity of points $\bar{\alpha}=(\alpha_1,\alpha_2)\in\mathbb{R}^2$, where $\alpha_1, \alpha_2$ are conjugate real algebraic numbers of arbitrary degree $\deg\alpha_1=\deg\alpha_2=n$ and of the height $H(\alpha_1)=H(\alpha_2)\leq Q$, in the strip width of $c(n)Q^{-\gamma}$, $0\leq\gamma\leq\frac12$, $Q>Q_0(n)$ near the smooth curve $y=f(x)$ were obtained. In our paper some new results about distribution of points with conjugate real and complex algebraic coordinates were obtained. In particular generalization of result mentioned above was obtained. The main idea of the proof is based on metric theorem about diophantine approximations in the domains $G$ of small measure $\mu G<c_2(n)Q^{-\gamma_1}$, $0\leq\gamma_1\leq\frac13$.
Bibliography: 16 titles.
Keywords: Diophantine approximations, Lebesgue measure, conjugate algebraic numbers, height of algebraic number.
Received: 08.07.2015
Bibliographic databases:
Document Type: Article
UDC: 511.42
Language: Russian
Citation: V. I. Bernik, A. G. Gusakova, A. V. Ustinov, “Distribution of algebraic points in domains of small measure and near the surfaces”, Chebyshevskii Sb., 16:3 (2015), 78–94
Citation in format AMSBIB
\Bibitem{BerGusUst15}
\by V.~I.~Bernik, A.~G.~Gusakova, A.~V.~Ustinov
\paper Distribution of algebraic points in domains of small measure and near the surfaces
\jour Chebyshevskii Sb.
\yr 2015
\vol 16
\issue 3
\pages 78--94
\mathnet{http://mi.mathnet.ru/cheb410}
\elib{https://elibrary.ru/item.asp?id=24398928}
Linking options:
  • https://www.mathnet.ru/eng/cheb410
  • https://www.mathnet.ru/eng/cheb/v16/i3/p78
  • Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
     
      Contact us:
     Terms of Use  Registration to the website  Logotypes © Steklov Mathematical Institute RAS, 2025