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Related papers: Heegner Points on Modular Curves

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We study a variant of the Neron models over curves which is recently found by the second named author in a more general situation using the theory of Hodge modules. We show that its identity component is a certain open subset of an iterated…

Algebraic Geometry · Mathematics 2010-08-19 Morihiko Saito , Christian Schnell

In this paper we improve on existing methods to compute quadratic points on modular curves and apply them to successfully find all the quadratic points on all modular curves $X_0(N)$ of genus up to $8$, and genus up to $10$ with $N$ prime,…

Number Theory · Mathematics 2023-10-03 Nikola Adžaga , Timo Keller , Philippe Michaud-Jacobs , Filip Najman , Ekin Ozman , Borna Vukorepa

Let $E$ be an elliptic curve over a quartic field $K$. By the Mordell-Weil theorem, $E(K)$ is a finitely generated group. We determine all the possibilities for the torsion group $E(K)_{tor}$ where $K$ ranges over all quartic fields $K$ and…

Number Theory · Mathematics 2025-10-14 Maarten Derickx , Filip Najman

In this article we prove an analogue of a theorem of Lachaud, Ritzenthaler, and Zykin, which allows us to connect invariants of binary oc-tics to Siegel modular forms of genus 3. We use this connection to show that certain modular…

Let X be a ruled surface over a nonsingular curve C of genus $g\geq0$. Let $M_H:=M_{X,H}(2;c_1,c_2)$ be the moduli space of H-stable rank 2 vector bundles E on X with fixed Chern classes $c_i:=c_i(E)$ for $i=1,2$. The main goal of this…

Algebraic Geometry · Mathematics 2024-01-23 L. Costa , I. Macías Tarrío

Following the prequel work \cite{VO3}, we prove a generalization of "Mazur's conjecture" for $L$-functions of elliptic curves in abelian extensions of imaginary quadratic fields, including the assertion that the Mordell-Weil rank of an…

Number Theory · Mathematics 2019-03-18 Jeanine Van Order

We review some results and techniques from our papers devoted to the computation of motivic classes of stacks of parabolic Higgs budles and bundles with connections on a curve. In the last section we present some directions for future work,…

Algebraic Geometry · Mathematics 2026-02-10 Roman Fedorov , Alexander Soibelman , Yan Soibelman

The genus of projective curves discretely separates decidedly different two variable algebraic relations. So, we can focus on the connected moduli M_g of genus g curves. Yet, modern applications require a data variable (function) on such…

Number Theory · Mathematics 2007-05-23 Michael D. Fried

A general structure theorem on higher order invariants is proven. For an arithmetic group, the structure of the corresponding Hecke module is determined. It is shown that the module does not contain any irreducible submodule. This explains…

Number Theory · Mathematics 2017-09-04 Anton Deitmar

Traces of singular moduli were introduced and studied by Zagier in 1998. Being simultaneously the (traces of) values of a modular function ($j$-invariant) and Fourier coefficients of modular forms - which constitutes Zagier's duality -…

Number Theory · Mathematics 2026-02-24 Pavel Guerzhoy

Quaternionic modular forms on $\mathsf{G}_2$ carry a surprisingly rich arithmetic structure. For example, they have a theory of Fourier expansions where the Fourier coefficients are indexed by totally real cubic rings. For quaternionic…

Number Theory · Mathematics 2025-10-07 Petar Bakić , Aleksander Horawa , Siyan Daniel Li-Huerta , Naomi Sweeting

Given a perverse sheaf on the moduli stack of principally polarized abelian varieties or the moduli stack of smooth curves with n marked points over a field of characteristic zero, we prove that the (orbifold) Euler characteristic is…

Algebraic Geometry · Mathematics 2025-12-08 Donu Arapura , Deepam Patel

A mapping class group of an oriented manifold is a quotient of its diffeomorphism group by the isotopies. We compute a mapping class group of a hypekahler manifold $M$, showing that it is commensurable to an arithmetic subgroup in SO(3,…

Algebraic Geometry · Mathematics 2013-12-09 Misha Verbitsky

This paper presents the theory of holomorphic vector valued modular forms from a geometric perspective. More precisely, we define certain holomorphic vector bundles on the modular orbifold of generalized elliptic curves whose sections are…

Number Theory · Mathematics 2016-01-11 Luca Candelori , Cameron Franc

In [11] the authors investigated a family of quotient Hilbert modules in the Cowen-Douglas class over the unit disk constructed from classical Hilbert modules such as the Hardy and Bergman modules. In this paper we extend the results to the…

Functional Analysis · Mathematics 2013-07-05 Ronald G. Douglas , Yun-Su Kim , Hyun-Kyoung Kwon , Jaydeb Sarkar

We introduce a notion of quasi-antisymmetric Higgs $G$-bundles over curves with marked points. They are endowed with additional structures, which replace the parabolic structures at marked points in the parabolic Higgs bundles. The latter…

Mathematical Physics · Physics 2021-10-11 Andrey Levin , Mikhail Olshanetsky , Andrei Zotov

In this note, we announce results on integral points on some modular varieties, based on a generalisation of Runge's method in higher dimensions which will be explained beforehand. In particular, we obtain an explicit result in the case of…

Number Theory · Mathematics 2017-03-07 Samuel Le Fourn

Consider moduli schemes of vector bundles over a smooth projective curve endowed with parabolic structures over a marked point. Boden and Hu observed that a slight variation of the weights leads to a desingularisation of the moduli scheme,…

Algebraic Geometry · Mathematics 2007-05-23 Norbert Hoffmann

Let E/Q be an elliptic curve with a fixed modular parametrization F : X_0(N) --> E and let P_1,...,P_r be Heegner points on E attached to the rings of integers of distinct quadratic imaginary field k_1,...,k_r. We prove that if the odd…

Number Theory · Mathematics 2011-05-30 Michael Rosen , Joseph H. Silverman

In this paper we propose and prove an anticyclotomic Iwasawa main conjecture for Heegner points on supersingular elliptic curves with $a_p=0$. The result has a "$\pm$" nature in the sense of Kobayashi. The proof uses a recent work of the…

Number Theory · Mathematics 2016-06-08 Francesc Castella , Xin Wan