Results 11 to 20 of about 258 (25)

A simplified proof of the Andre-Oort conjecture for products of modular curves [PDF]

open access: yes, 2012
In this paper we give a short proof of the André-Oort conjecture for products of modular curves under the Generalised Riemann Hypothesis using only simple Galois-theoretic and geometric arguments.
Daw, Chris
core   +1 more source

Rational torsion points on Jacobians of modular curves

open access: yes, 2015
Let $p$ be a prime greater than 3. Consider the modular curve $X_0(3p)$ over $\mathbb{Q}$ and its Jacobian variety $J_0(3p)$ over $\mathbb{Q}$. Let $\mathcal{T}(3p)$ and $\mathcal{C}(3p)$ be the group of rational torsion points on $J_0(3p)$ and the ...
Yoo, Hwajong
core   +1 more source

Gonality of modular curves in characteristic p

open access: yes, 2006
Let k be an algebraically closed field of characteristic p. Let X(p^e;N) be the curve parameterizing elliptic curves with full level N structure (where p does not divide N) and full level p^e Igusa structure. By modular curve, we mean a quotient of any X(
Poonen, Bjorn
core   +1 more source

Bounding the $j$-invariant of integral points on certain modular curves

open access: yes, 2014
In this paper, we obtain two effective bounds for the $j$-invariant of integral points on certain modular curves which has positive genus and less than three ...
Sha, Min
core   +1 more source

Abelian surfaces of GL2-type as Jacobians of curves

open access: yes, 2004
We study the set of isomorphism classes of principal polarizations on abelian varieties of GL2-type. As applications of our results, we construct examples of curves C, C'/\Q of genus two which are nonisomorphic over \bar \Q and share isomorphic ...
Gonzalez, Josep   +2 more
core   +1 more source

Class invariants for quartic CM fields [PDF]

open access: yes, 2004
One can define class invariants for a quartic primitive CM field K as special values of certain Siegel (or Hilbert) modular functions at CM points corresponding to K.
Goren, Eyal Z., Lauter, Kristin E.
core   +3 more sources

Higher real K-theories and topological automorphic forms

open access: yes, 2009
Given a maximal finite subgroup G of the nth Morava stabilizer group at a prime p, we address the question: is the associated higher real K-theory EO_n a summand of the K(n)-localization of a TAF-spectrum associated to a unitary similitude group of type ...
Behrens, Mark, Hopkins, Michael J.
core   +2 more sources

Modular Isogeny Complexes

open access: yes, 2011
We describe a vanishing result on the cohomology of a cochain complex associated to the moduli of chains of finite subgroup schemes on elliptic curves. These results have applications to algebraic topology, in particular to the study of power operations ...
Rezk, Charles
core   +3 more sources

Local diophantine properties of modular curves of $\cal{D}$-elliptic sheaves [PDF]

open access: yes, 2010
We study the existence of rational points on modular curves of $\cal{D}$-elliptic sheaves over local fields and the structure of special fibres of these curves.
Papikian, Mihran
core  

Partial Hasse invariants on splitting models of Hilbert modular varieties [PDF]

open access: yes, 2016
Let $F$ be a totally real field of degree $g$, and let $p$ be a prime number. We construct $g$ partial Hasse invariants on the characteristic $p$ fiber of the Pappas-Rapoport splitting model of the Hilbert modular variety for $F$ with level prime to $p$,
Reduzzi, Davide A., Xiao, Liang
core  

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