arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.09918math.NTmath.AGmath.RAmath.RT
收藏

Borcherds积的代数

Algebra of Borcherds products

Shouhei Ma

摘要:

签名为(p,q)的偶格的Borcherds提升是Weil表示的权为(p-q)/2的弱全纯模形式的提升.我们在这种模形式的空间上引入了一种新的积运算,并发展了一个基本理论。乘积使这个空间成为一个无单位元的、一般非交换的、无生成的滤结合代数。这是关于嵌入格的准拉回函。而且,具有有理主部的模形式的有理空间在此乘积下是闭的。在某些p=2的例子中,整数权的Borcherds乘积的乘法群形成子环。

英文摘要:

Borcherds lift for an even lattice of signature (p,q) is a lifting from weakly holomorphic modular forms of weight (p-q)/2 for the Weil representation. We introduce a new product operation on the space of such modular forms and develop a basic theory. The product makes this space a finitely generated filtered associative algebra, without unit element and noncommutative in general. This is functorial with respect to embedding of lattices by the quasi-pullback. Moreover, the rational space of modular forms with rational principal part is closed under this product. In some examples with p=2, the multiplicative group of Borcherds products of integral weight forms a subring.

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。

↑