Results 21 to 30 of about 2,228 (208)

Infinitely Ramified Galois Representations [PDF]

open access: yesThe Annals of Mathematics, 2000
In this paper we show how to construct, for most p >= 5, two types of surjective representations ρ:G_Q=Gal(\bar{Q}/Q) -> GL_2(Z_p) that are ramified at an infinite number of primes. The image of inertia at almost all of these primes will be torsion-free. The first construction is unconditional. The catch is that we cannot say whether ρ|_{G_p=Gal(\
openaire   +2 more sources

Quadratic differentials and equivariant deformation theory of curves [PDF]

open access: yes, 2012
Given a finite p-group G acting on a smooth projective curve X over an algebraically closed field k of characteristic p, the dimension of the tangent space of the associated equivariant deformation functor is equal to the dimension of the space of ...
Koeck, Bernhard   +2 more
core   +1 more source

Dimensions of Prym varieties

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
Given a tame Galois branched cover of curves π:X→Y with any finite Galois group G whose representations are rational, we compute the dimension of the (generalized) Prym variety Prymρ(X) corresponding to any irreducible representation ρ of G. This formula
Amy E. Ksir
doaj   +1 more source

Modular forms of half-integral weight on Γ0(4) with few nonvanishing coefficients modulo ℓ

open access: yesOpen Mathematics, 2022
Let kk be a nonnegative integer. Let KK be a number field and OK{{\mathcal{O}}}_{K} be the ring of integers of KK. Let ℓ≥5\ell \ge 5 be a prime and vv be a prime ideal of OK{{\mathcal{O}}}_{K} over ℓ\ell . Let ff be a modular form of weight k+12k+\frac{1}
Choi Dohoon, Lee Youngmin
doaj   +1 more source

Galois representations over pseudorigid spaces [PDF]

open access: yes, 2023
We study p-adic Hodge theory for families of Galois representations over pseudorigid spaces. Such spaces are non-archimedean analytic spaces which may be of mixed characteristic, and which arise naturally in the study of eigenvarieties at the boundary of
Bellovin, Rebecca, Rebecca Bellovin
core   +1 more source

COMPATIBLE SYSTEMS OF GALOIS REPRESENTATIONS ASSOCIATED TO THE EXCEPTIONAL GROUP $E_{6}$

open access: yesForum of Mathematics, Sigma, 2019
We construct, over any CM field, compatible systems of $l$-adic Galois representations that appear in the cohomology of algebraic varieties and have (for all $l$) algebraic monodromy groups equal to the exceptional group of type $E_{6}$.
GEORGE BOXER   +5 more
doaj   +1 more source

Galois Representations with Non-Surjective Traces [PDF]

open access: yesCanadian Journal of Mathematics, 1999
AbstractLet E be an elliptic curve over , and let r be an integer. According to the Lang-Trotter conjecture, the number of primes p such that ap(E) = r is either finite, or is asymptotic to CE,r√x/log x where CE,r is a non-zero constant. A typical example of the former is the case of rational ℓ-torsion, where ap(E) = r is impossible if r ≡ 1 (mod ℓ ...
C. David   +2 more
openaire   +3 more sources

Modularity lifting results in parallel weight one and applications to the Artin conjecture: the tamely ramified case

open access: yesForum of Mathematics, Sigma, 2014
We extend the modularity lifting result of P. Kassaei (‘Modularity lifting in parallel weight one’,J. Amer. Math. Soc. 26 (1) (2013), 199–225) to allow Galois representations with some ramification at
PAYMAN L. KASSAEI   +2 more
doaj   +1 more source

A characterization of the relation between two $\ell $-modular correspondences

open access: yesComptes Rendus. Mathématique, 2020
Let $F$ be a non archimedean local field of residual characteristic $p$ and $\ell $ a prime number different from $p$. Let $\mathrm{V}$ denote Vignéras’ $\ell $-modular local Langlands correspondence [7], between irreducible $\ell $-modular ...
Kurinczuk, Robert, Matringe, Nadir
doaj   +1 more source

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