THE EISENSTEIN IDEAL OF WEIGHT k AND RANKS OF HECKE ALGEBRAS
THE EISENSTEIN IDEAL OF WEIGHT k AND RANKS OF HECKE ALGEBRAS
复制标题
爱森斯坦权 k 理想和赫克代数阶
DOI:
10.1017/s1474748023000129
复制
发表时间:
2021
影响因子:
0.9
通讯作者:
Shaunak V. Deo
中科院分区:
文献类型:
--
作者:
Shaunak V. Deo
<jats:p>Let <jats:italic>p</jats:italic> and <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline1.png" />
<jats:tex-math>
$\ell $
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> be primes such that <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline2.png" />
<jats:tex-math>
$p> 3$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> and <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline3.png" />
<jats:tex-math>
$p \mid \ell -1$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> and <jats:italic>k</jats:italic> be an even integer. We use deformation theory of pseudo-representations to study the completion of the Hecke algebra acting on the space of cuspidal modular forms of weight <jats:italic>k</jats:italic> and level <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline4.png" />
<jats:tex-math>
$\Gamma _0(\ell )$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> at the maximal Eisenstein ideal containing <jats:italic>p</jats:italic>. We give a necessary and sufficient condition for the <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline5.png" />
<jats:tex-math>
$\mathbb {Z}_p$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula>-rank of this Hecke algebra to be greater than <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline6.png" />
<jats:tex-math>
$1$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> in terms of vanishing of the cup products of certain global Galois cohomology classes. We also recover some of the results proven by Wake and Wang-Erickson for <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline7.png" />
<jats:tex-math>
$k=2$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> using our methods. In addition, we prove some <jats:inline-formula>
<jats:alternatives>
<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S1474748023000129_inline8.png" />
<jats:tex-math>
$R=\mathbb {T}$
</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> theorems under certain hypotheses.</jats:p>
登录
查看更多内容
影响因子:
1.7
作者:
Bellaïche, Joël
通讯作者:
Bellaïche, Joël
影响因子:
1.7
作者:
Preston Wake;Carl Wang-Erickson
通讯作者:
Preston Wake;Carl Wang-Erickson
影响因子:
2.6
作者:
Wake, Preston
通讯作者:
Wake, Preston
影响因子:
2.5
作者:
Wake, Preston;Wang-Erickson, Carl
通讯作者:
Wang-Erickson, Carl