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2 votes
1 answer
147 views

Finiteness and bounds for elliptic curves realizing a given galois representation

Let $\rho: \text{Gal}(\overline{\mathbb{Q}}/\mathbb{Q}) \to \text{GL}_2(\mathbb{Z}_p)$ be a continuous, irreducible Galois representation. Consider the set $\mathcal{L}_\rho$ of all elliptic curves $...
Thomas Frenkel's user avatar
5 votes
0 answers
126 views

Using Lang–Trotter to get bounds on averages of Fourier coefficients

Let $E$ be an elliptic curve over $\mathbf{Q}$ and let $(a_n)$ be the sequence of Fourier coefficients for the weight two newform attached to $E$. The coefficients $a_p$ are the Frobenius traces given ...
Joseph Harrison's user avatar
0 votes
1 answer
163 views

Lower bound related to derivative of $j$-invariant

Recall the $j$-invariant function, namely, $$ j(\tau)=\frac{1}{q}+\sum_{k\geq 0}c_kq^k, $$ where $q=e^{2\pi i \tau}$ and the coefficients $(c_k)_k$ are in the OEIS sequence A000521. By using some ...
Jean's user avatar
  • 515
3 votes
3 answers
483 views

Growth of the coefficients of the inversion of the $j$-invariant function

We have the $j$-invariant defined as I have that $$ j(\tau)=\frac{1}{q}+\sum_{k\geq 0}c_kq^k, $$ where $q=e^{-2\pi t}$ ($\tau=it$) and $c_k\sim e^{4\pi\sqrt{k}}/(k^{3/4}\sqrt{2})$. The inversion ...
Jean's user avatar
  • 515
1 vote
0 answers
220 views

Shortest possible reasonably self-contained formulation of the modularity theorem

This is question in mathematical exposition, not research, I hope this is ok. I am writing a book about great theorems. My question is: what is the shortest formulation of the modularity theorem, ...
Bogdan Grechuk's user avatar
15 votes
5 answers
2k views

Very strong multiplicity one for Hecke eigenforms

In Invent. math. 116, 645-649 (1994) Dinakar Ramakrishnan proves a theorem which I understand to imply that the following statement (in light of the fact that elliptic curves over $\mathbb{Q}$ are ...
Jonah Sinick's user avatar
  • 7,062