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See detailThe Kernels of Jacobians at Eisenstein primes
Yoo, Hwajong UL

Presentation (2014, December 22)

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See detailThe Kernels of Jacobians at Eisenstein primes
Yoo, Hwajong UL

Presentation (2014, October 16)

Detailed reference viewed: 30 (0 UL)
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See detailNon-optimal levels of a reducible mod l modular representation
Yoo, Hwajong UL

E-print/Working paper (2014)

Let $ell>3$ be a prime and $N$ is a square-free integer prime to $\ell$. For each prime divisor $p$ of $N$, let $a_p$ is either 1 or -1. We give a sufficient criterion for the existence of a newform $f ... [more ▼]

Let $ell>3$ be a prime and $N$ is a square-free integer prime to $\ell$. For each prime divisor $p$ of $N$, let $a_p$ is either 1 or -1. We give a sufficient criterion for the existence of a newform $f$ of weight 2 for $\Gamma_0(N)$ such that the mod $\ell$ Galois representation attached to $f$ is reducible and $U_p f= a_p f$ for prime divisors $p$ of $N$. The main techniques used are level raising methods based on an exact sequence due to Ribet. [less ▲]

Detailed reference viewed: 29 (0 UL)
See detailNon-optimal levels of a reducible mod l modular representation
Yoo, Hwajong UL

Presentation (2014, August 26)

Detailed reference viewed: 18 (0 UL)
See detailThe 2nd MYNT
Yoo, Hwajong UL

Presentation (2013, August 28)

We present the multiplicity one theorem for Eisenstein maximal ideals.

Detailed reference viewed: 23 (0 UL)
See detailPure and Applied Number Theory Conference
Yoo, Hwajong UL

Presentation (2013, August 12)

We present the multiplicity one theorem for Eisenstein maximal ideals.

Detailed reference viewed: 12 (0 UL)
See detailIntensive workshop on Fermat's last theorem
Yoo, Hwajong UL

Presentation (2013, August)

We give 9 lectures about Wiles' proof on Fermat's Last Theorem.

Detailed reference viewed: 25 (2 UL)
See detailThe 10th KWMS international conference
Yoo, Hwajong UL

Presentation (2013, June 20)

We discussed level-raising method for residually reducible Galois representations.

Detailed reference viewed: 104 (3 UL)
See detailBay area algebraic number theory and arithmetic geometry day
Yoo, Hwajong UL

Presentation (2013, April 06)

We discussed level-raising method for residually reducible Galois representations.

Detailed reference viewed: 18 (0 UL)
See detailWorkshop on Modular forms and Galois representations
Yoo, Hwajong UL

Presentation (2013, January 07)

We present the result on non-optimal levels of reducible modular Galois representations.

Detailed reference viewed: 25 (2 UL)
See detailThe index of an Eisenstein ideal of multiplicity one
Yoo, Hwajong UL

E-print/Working paper (2013)

Mazur’s fundamental work on Eisenstein ideals for prime level has a variety of arith- metic applications. In this article, we generalize his work to arbitrary square-free level. We compute the index of an ... [more ▼]

Mazur’s fundamental work on Eisenstein ideals for prime level has a variety of arith- metic applications. In this article, we generalize his work to arbitrary square-free level. We compute the index of an Eisenstein ideal and the dimension of the m-torsion of the modular Jacobian vari- ety, where m is an Eisenstein maximal ideal. In many cases, the dimension of the m-torsion is 2, in other words, multiplicity one theorem holds. [less ▲]

Detailed reference viewed: 59 (3 UL)