# Wydawnictwa / Czasopisma IMPAN / Bulletin Polish Acad. Sci. Math. / Wszystkie zeszyty

## The Analytic Rank of a Family of Jacobians of Fermat Curves

### Tom 56 / 2008

Bulletin Polish Acad. Sci. Math. 56 (2008), 199-206 MSC: 11G40, 11G10, 11G30, 11G35. DOI: 10.4064/ba56-3-2

#### Streszczenie

We study the family of curves $F_{m}( p) :x^{p}+y^{p}=m$, where $p$ is an odd prime and $m$ is a $p$th power free integer. We prove some results about the distribution of root numbers of the $L$-functions of the hyperelliptic curves associated to the curves $F_{m}(p)$. As a corollary we conclude that the jacobians of the curves $F_{m}( 5)$ with even analytic rank and those with odd analytic rank are equally distributed.

#### Autorzy

• Tomasz JędrzejakInstitute of Mathematics
University of Szczecin
Wielkopolska 15
70-451 Szczecin, Poland
e-mail

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