Genus zero modular operad and absolute Galois group

N. C. Combe; Y. I. Manin

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arXiv · 1907.10313

Genus zero modular operad and absolute Galois group

N. C. Combe·Y. I. Manin

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Abstract

In this article, we develop the geometry of canonical stratifications of the spaces $\mathcal{M}_{0,n}$ and prepare ground for studying the action of the Galois group $Gal (\overline{\mathbb{Q}} /\mathbb{Q})$ upon strata. We define and introduce a version of a gravity operad constructed for a class of moduli spaces $\mathcal{M}_{0,n}$, equipped with a hidden holomorphic involution. This additional symmetry is associated to a split quaternionic structure. We introduce a categorical framework to present this object. Interaction between the geometry, physics and the arithmetics are discussed. An important feature is that 0-divisors of the split quaternion algebra imply additional singular points, and lead to investigations concerning the geometry and mixed Hodge structures.

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BibTeX RIS

N. C. Combe, Y. I. Manin. 2021-09-27. Genus zero modular operad and absolute Galois group. https://arxiv.org/abs/1907.10313

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