Results 11 to 20 of about 2,867,834 (292)

Rational and singular points of a family of curves

open access: yesResults in Applied Mathematics
This paper explores the properties of a family of absolutely irreducible projective plane curves, denoted Ca,b, which are defined over a finite field Fm of characteristic 2.
M.C. Rodríguez-Palánquex
doaj   +2 more sources

Sieving rational points on varieties [PDF]

open access: yesTransactions of the American Mathematical Society, 2018
An upper bound sieve for rational points on suitable varieties is developed, together with applications to counting rational points in thin sets, to local solubility in families, and to the notion of “friable” rational points with respect to divisors. In the special case of quadrics, sharper estimates are obtained by developing a version of the Selberg
Browning, Tim, Loughran, Daniel
core   +7 more sources

Some aspects of rational points and rational curves [PDF]

open access: yes, 2023
Various methods have been used to construct rational points and rational curves on rationally connected algebraic varieties. We survey recent advances in two of them, the descent and the fibration method, in a number-theoretical context (rational points over number fields) and in an algebro-geometric one (rational curves on real varieties), and discuss
Wittenberg, Olivier
core   +6 more sources

Rational points on curves [PDF]

open access: yesJournal de théorie des nombres de Bordeaux, 2011
This is an extended version of an invited lecture I gave at the Journées Arithmétiques in St. Étienne in July 2009. We discuss the state of the art regarding the problem of finding the set of rational points on a (smooth projective) geometrically integral curve  C
Michael Stoll, Stoll, Michael
openaire   +4 more sources

Rational points on a certain genus 2 curve

open access: yesComptes Rendus. Mathématique, 2023
We give a correct proof to the fact that all rational points on the curve \[ y^2=(x^2+1)(x^2+3)(x^2+7) \] are $\pm \infty $ and $(\pm 1,\,\pm 8)$. This corrects previous works of Cohen [3] and Duquesne [4, 5].
Nguyen, Xuan Tho
doaj   +1 more source

Rational Singularities and Rational Points [PDF]

open access: yesPure and Applied Mathematics Quarterly, 2008
If $X$ is a projective, geometrically irreducible variety defined over a finite field $\F_q$, such that it is smooth and its Chow group of 0-cycles fulfills base change, i.e. $CH_0(X\times_{\F_q}\bar{\F_q(X)})=\Q$, then the second author's theorem asserts that its number of rational points satisfies $|X(\F_q)| \equiv 1$ modulo $q$. If $X$ is not smooth,
Blickle, Manuel, Esnault, Hélène
openaire   +2 more sources

On rational points in CFT moduli spaces

open access: yesJournal of High Energy Physics, 2021
Motivated by the search for rational points in moduli spaces of two-dimensional conformal field theories, we investigate how points with enhanced symmetry algebras are distributed there.
Nathan Benjamin   +3 more
doaj   +1 more source

Families of polynomials of every degree with no rational preperiodic points

open access: yesComptes Rendus. Mathématique, 2021
Let $K$ be a number field. Given a polynomial $f(x)\in K[x]$ of degree $d\ge 2$, it is conjectured that the number of preperiodic points of $f$ is bounded by a uniform bound that depends only on $d$ and $[K:\mathbb{Q}]$.
Sadek, Mohammad
doaj   +1 more source

Primitive Points in Rational Polygons [PDF]

open access: yesCanadian Mathematical Bulletin, 2020
AbstractLet ${\mathcal{A}}$ be a star-shaped polygon in the plane, with rational vertices, containing the origin. The number of primitive lattice points in the dilate $t{\mathcal{A}}$ is asymptotically $\frac{6}{\unicode[STIX]{x1D70B}^{2}}\text{Area}(t{\mathcal{A}})$ as $t\rightarrow \infty$. We show that the error term is both $\unicode[STIX]{x1D6FA}_{
Bárány, I   +3 more
openaire   +3 more sources

Heights on stacks and a generalized Batyrev–Manin–Malle conjecture

open access: yesForum of Mathematics, Sigma, 2023
We define a notion of height for rational points with respect to a vector bundle on a proper algebraic stack with finite diagonal over a global field, which generalizes the usual notion for rational points on projective varieties.
Jordan S. Ellenberg   +2 more
doaj   +1 more source

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