Skip to main content

All Questions

Filter by
Sorted by
Tagged with
11 votes
3 answers
944 views

"Extra Euler factors" in one definition of the L-function of a twist of a modular form

Let $(\rho_{f,\lambda})_\lambda$ be the system of Deligne's $\ell$-adic representations attached to a modular newform $f$ (where $\lambda$ runs over the finite places of the number field $K$ generated ...
Michael Fütterer's user avatar
6 votes
1 answer
499 views

Galois representation and weight one Hilbert modular form

Let $f$ be a primitive weight one Hilbert modular form for the totally real field $F$ (the weight of $f$ is parallel). Assume that $f$ is $N$-new, $p$-stable and cuspidal. Let $\rho:G_F \rightarrow \...
Adel BETINA's user avatar
  • 1,066
28 votes
1 answer
2k views

Is there a "Langlands philosophy" reason for the fact that the L-function of the Jacobi theta function is (almost) the Riemann zeta function?

The Jacobi theta function $\theta(z) = 1 + 2 \sum_{n = 1}^\infty q^{n^2}$, with $q = e^{\pi i z}$ is a (twisted) modular form with weight $1/2$. It has an associated $L$-function $L(\theta, s) = \sum_{...
dorebell's user avatar
  • 3,058