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Jeff Yelton
  • Member for 10 years, 1 month
  • Last seen more than 2 years ago
11 votes
1 answer
733 views

Galois representations for the curve $y^{2} = x^{3} - x$

10 votes
3 answers
553 views

Low-dimensional irreducible 2-modular representations of the symmetric group

7 votes
1 answer
328 views

elements of the pure braid group seen as Galois automorphisms

6 votes
2 answers
411 views

paper by Nakata on 2-adic Galois representations

6 votes
1 answer
499 views

realizing uniform boundedness of Galois representations associated to elliptic curves

6 votes
1 answer
445 views

first group cohomology for the standard representation of $S_n$ over $\mathbb{F}_2$

6 votes
2 answers
590 views

actions of the absolute Galois group and the motivic Galois group on étale cohomology

5 votes
0 answers
122 views

subgroups of $\mathrm{Sp}_{2g}(\mathbb{Z}_2)$ whose mod-2 image is the symmetric group

5 votes
1 answer
209 views

What can we say about the differences between roots of a polynomial with large Galois group?

3 votes
0 answers
179 views

alternate interpretations of Galois action on Tate module

3 votes
2 answers
376 views

kernel of monodromy action of braid group on homology of hyperelliptic curve

3 votes
0 answers
139 views

exact sequence of fundamental groups associated to "almost" smooth families of curves

3 votes
0 answers
102 views

Notation for theta divisors in _Tata Lectures on Theta II_

3 votes
1 answer
101 views

Density of $\Gamma(N)$ in $\mathrm{Sp}_{2g}(\mathbb{Z}_{\ell})$ where $\ell \not | N$

3 votes
1 answer
684 views

Isomorphism between a mapping class group and the fundamental group of a moduli space

3 votes
0 answers
160 views

uniqueness of quotients of principal congruence subgroups

3 votes
2 answers
1k views

generators of principal congruence subgroups and Sage package

3 votes
0 answers
251 views

field of definition of isogenies of abelian varieties

3 votes
1 answer
213 views

subgroups of $\mathrm{Sp}_{2g}(\mathbb{Z})$ generated by powers of transvections

3 votes
2 answers
186 views

primes of multiplicative reduction for elliptic curves with rational $\ell$-torsion

2 votes
0 answers
152 views

Translations of rings of integers by algebraic integers

1 vote
1 answer
246 views

If $K=\langle$HCF of $\mathbb{Q}_{p}$, $\mathbb{Q}^\mathrm{cycl}\rangle$, does $K$ also contain all roots of elements of $\mathcal{O}_{K}^{\times}$?