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DISTRIBUTION OF ALGEBRAIC POINTS IN DOMAINS OF SMALL MEASURE AND NEAR THE SURFACES

https://doi.org/10.22405/2226-8383-2015-16-3-78-94

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] ∈ R is an interval, y = f(x) is twice continuously differentiable function which satisfies the inequality c1 < |f ′′(x)| < c2 for c2 > c1 > 0 and for all x ∈ I. For arbitrary γ, 0 ≤ γ < 1 for sufficiently large Q we denote by AI (Q, γ) the set of rational points Γ = ( p1 q , p2 q ) , aq ≤ p1 ≤ bq, 1 ≤ q ≤ Q, for witch the following inequality holds f ( p1 q ) − p2 q < Q−1−γ . The set AI (Q, γ) consists from points lying inside the strip width of 2Q−γ near the curve y = f(x), x ∈ I. It it natural to expect that #AI (Q, γ) is a value of the order Q3−γ . 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 α¯ = (α1, α2) ∈ R 2 , where α1, α2 are conjugate real algebraic numbers of arbitrary degree deg α1 = deg α2 = n and of the height H(α1) = H(α2) ≤ Q, in the strip width of c(n)Q−γ , 0 ≤ γ ≤ 1 2 , Q > Q0(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 µG < c2(n)Q−γ1 , 0 ≤ γ1 ≤ 1 3.

 

About the Authors

V. I. Bernik
Институт математики НАН Беларуси
Belarus


A. G. Gusakova
Институт математики НАН Беларуси
Belarus


A. V. Ustinov
Хабаровское отделение Института прикладной математики ДО РАН
Russian Federation


References

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14. Bernik, V., Beresnevich, V., Goetze, F. & Kukso, O. 2013, „Distribution of algebraic numbers and metric theory of Diophantine approximation. Limit theorems in probability, statistics and number theory“, Springer Proc. Math. Stat. 42, Springer, Heidelberg, pp. 23–48.

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Review

For citations:


Bernik V.I., Gusakova A.G., Ustinov A.V. DISTRIBUTION OF ALGEBRAIC POINTS IN DOMAINS OF SMALL MEASURE AND NEAR THE SURFACES. Chebyshevskii Sbornik. 2015;16(3):78-94. (In Russ.) https://doi.org/10.22405/2226-8383-2015-16-3-78-94

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