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arXiv 2203.11273math.NT
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平方类上Hurwitz类数的同余

Congruences of Hurwitz class numbers on square classes

Olivia Beckwith, Martin Raum, Olav Richter

摘要:

我们扩展了我们早期工作的全纯投影参数,证明了一个新的整除性结果的非全纯同余的Hurwitz类数。这一结果使我们能够建立拉马努金型同余Hurwitz类数的平方类,其中的全纯情况下平行以前的工作Radu分区同余。我们提供两种应用。第一个应用程序演示了Hurwitz类数的Ramanujan型同余的共同整除性特征。第二个应用程序提供了一个二分法之间的同余类数虚二次域和拉马努金型同余Hurwitz类数。

英文摘要:

We extend a holomorphic projection argument of our earlier work to prove a novel divisibility result for non-holomorphic congruences of Hurwitz class numbers. This result allows us to establish Ramanujan-type congruences for Hurwitz class numbers on square classes, where the holomorphic case parallels previous work by Radu on partition congruences. We offer two applications. The first application demonstrates common divisibility features of Ramanujan-type congruences for Hurwitz class numbers. The second application provides a dichotomy between congruences for class numbers of imaginary quadratic fields and Ramanujan-type congruences for Hurwitz class numbers.

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