Spherical tropicalization and Berkovich analytification

Desmond Coles

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arXiv · 2205.09964

Spherical tropicalization and Berkovich analytification

Desmond Coles

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Abstract

Let $X$ be a spherical variety. We show that Tevelev and Vogiannou's tropicalization map from $X$ to its tropicalization factors through the Berkovich analytification $X^{\text{an}}$, as in the case for toric varieties. Furthermore we show that the tropicalization is a strong deformation retraction of $X^{\text{an}}$. We also give a strong deformation retraction of Thuillier's analytification $X^{\beth}$ onto a subspace described using the colored fan of $X$.

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Desmond Coles. 2022-05-20. Spherical tropicalization and Berkovich analytification. https://arxiv.org/abs/2205.09964

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