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arXiv · 2509.05569

Construction of Higher Chow cycles on cyclic coverings of $\mathbb{P}^1 \times \mathbb{P}^1$

Yusuke Nemoto·Ken Sato
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Abstract

In this paper, we construct higher Chow cycles of type $(2, 1)$ on a certain family of surfaces, which are constructed by a product of certain hypergeometric curves of degree $N$. We prove that for a very general member, these cycles are linearly independent over $\mathbb{Z}$ and generate a subgroup of $\operatorname{rank} \ge 36 \cdot \varphi(N)$, where $\varphi(N)$ is Euler's totient function, by computing the image of the transcendental regulator map.

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Yusuke Nemoto, Ken Sato. 2025-09-06. Construction of Higher Chow cycles on cyclic coverings of $\mathbb{P}^1 \times \mathbb{P}^1$. https://arxiv.org/abs/2509.05569

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