arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.05804math.NTmath-phmath.MP
收藏

二面体Maass型的超范数域和结点域

Sup-norm and nodal domains of dihedral Maass forms

Bingrong Huang

摘要:

本文改进了算术双曲曲面上Laplacian特征函数列的二面体Maass型的节域个数的上范数界和下界。更具体地说,设$ϕ$是一个二面体的Mass型,其谱参数为$t_ϕ$,则我们证明了$\|ϕ\|_\infty \ll t_ϕ^{3/8+\varepsilon} \|ϕ\|_2$,这是Iwaniec和Sarnak给出的$t_ϕ^{5/12+\varepsilon} \|ϕ\|_2$界的改进.因此,在Lindelöf假设下,我们得到了与固定测线段相交的节点域个数的一个较好的下界。无条件地,我们证明了节点域的数量增长速度比$t_ϕ^{1/8-\varepsilon}$的任何$\varepsilon>0$几乎所有的二面角马斯形式。

英文摘要:

In this paper, we improve the sup-norm bound and the lower bound of the number of nodal domains for dihedral Maass forms, which are a distinguished sequence of Laplacian eigenfunctions on an arithmetic hyperbolic surface. More specifically, let $ϕ$ be a dihedral Maass form with spectral parameter $t_ϕ$, then we prove that $\|ϕ\|_\infty \ll t_ϕ^{3/8+\varepsilon} \|ϕ\|_2$, which is an improvement over the bound $t_ϕ^{5/12+\varepsilon} \|ϕ\|_2$ given by Iwaniec and Sarnak. As a consequence, we get a better lower bound for the number of nodal domains intersecting a fixed geodesic segment under the Lindelöf Hypothesis. Unconditionally, we prove that the number of nodal domains grows faster than $t_ϕ^{1/8-\varepsilon}$ for any $\varepsilon>0$ for almost all dihedral Maass forms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑