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Lattices and Rational Points [PDF]

open access: yesMathematics, 2017
In this article, we show how to use the first and second Minkowski Theorems and some Diophantine geometry to bound explicitly the height of the points of rank N - 1 on transverse curves in E N , where E is an elliptic curve without Complex
Evelina Viada
doaj   +4 more sources

Quartic surfaces, their bitangents and rational points [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2023
Let X be a smooth quartic surface not containing lines, defined over a number field K. We prove that there are only finitely many bitangents to X which are defined over K.
Pietro Corvaja, Francesco Zucconi
doaj   +1 more source

Which rational double points occur on del Pezzo surfaces? [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2021
We determine all configurations of rational double points that occur on RDP del Pezzo surfaces of arbitrary degree and Picard rank over an algebraically closed field $k$ of arbitrary characteristic ${\rm char}(k)=p \geq 0$, generalizing classical work of
Claudia Stadlmayr
doaj   +1 more source

On homogeneous spaces with finite anti-solvable stabilizers

open access: yesComptes Rendus. Mathématique, 2022
We say that a group is anti-solvable if all of its composition factors are non-abelian. We consider a particular family of anti-solvable finite groups containing the simple alternating groups for $n\ne 6$ and all 26 sporadic simple groups. We prove that,
Lucchini Arteche, Giancarlo
doaj   +1 more source

Parametrization of Algebraic Points of Low Degrees on the Schaeffer Curve

open access: yesJournal of Mathematical Sciences and Modelling, 2021
In this paper, we give a parametrization of algebraic points of degree at most $4$ over $\mathbb{Q}$ on the schaeffer curve $\mathcal{C}$ of affine equation : $ y^{2}=x^{5}+1 $. The result extends our previous result which describes in [5] ( Afr.
Moussa Fall
doaj   +1 more source

New sequences of non-free rational points

open access: yesComptes Rendus. Mathématique, 2021
We exhibit some new infinite families of rational values of $\tau $, some of them squares of rationals, for which the group or even the semigroup generated by the matrices $({{\textstyle \begin{matrix} 1 & 1\\ 0 & 1 \end{matrix}}})$ and  $({{\textstyle ...
Smilga, Ilia
doaj   +1 more source

Quartic and Quintic Hypersurfaces with Dense Rational Points

open access: yesForum of Mathematics, Sigma, 2023
Let $X_4\subset \mathbb {P}^{n+1}$ be a quartic hypersurface of dimension $n\geq 4$ over an infinite field k. We show that if either $X_4$ contains a linear subspace $\Lambda $ of dimension $h\geq \max \{2,\dim (\Lambda ...
Alex Massarenti
doaj   +1 more source

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

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

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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