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Displaying similar documents to “Siegel’s theorem and the Shafarevich conjecture”

Linearly Normal Curves in P^n

Pasarescu, Ovidiu (2004)

Serdica Mathematical Journal

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2000 Mathematics Subject Classification: 14H45, 14H50, 14J26. We construct linearly normal curves covering a big range from P^n, n ≥ 6 (Theorems 1.7, 1.9). The problem of existence of such algebraic curves in P^3 has been solved in [4], and extended to P^4 and P^5 in [10]. In both these papers is used the idea appearing in [4] and consisting in adding hyperplane sections to the curves constructed in [6] (for P^3) and [15, 11] (for P^4 and P^5) on some special surfaces. In...

Variations on a theme of Runge: effective determination of integral points on certain varieties

Aaron Levin (2008)

Journal de Théorie des Nombres de Bordeaux

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We consider some variations on the classical method of Runge for effectively determining integral points on certain curves. We first prove a version of Runge’s theorem valid for higher-dimensional varieties, generalizing a uniform version of Runge’s theorem due to Bombieri. We then take up the study of how Runge’s method may be expanded by taking advantage of certain coverings. We prove both a result for arbitrary curves and a more explicit result for superelliptic curves. As an application...

The fluctuations in the number of points on a family of curves over a finite field

Maosheng Xiong (2010)

Journal de Théorie des Nombres de Bordeaux

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Let l 2 be a positive integer, 𝔽 q a finite field of cardinality q with q 1 ( mod l ) . In this paper, inspired by [, , ] and using a slightly different method, we study the fluctuations in the number of 𝔽 q -points on the curve F given by the affine model F : Y l = F ( X ) , where F is drawn at random uniformly from the set of all monic l -th power-free polynomials F 𝔽 q [ X ] of degree d as d . The method also enables us to study the fluctuations in the number of 𝔽 q -points on the same family of curves arising from the set of monic...