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arXiv · 2605.13585

Stratification of $\mathrm{AGL}_r(\mathbb{C})$-representation varieties of twisted Hopf links

Ángel Molina-Navarro
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Abstract

We provide a stratification of the $\mathrm{AGL}_r(\mathbb{C})$-representation variety of the fundamental group of the complement of a twisted Hopf link in terms of a stratification of the corresponding $\mathrm{GL}_r(\mathbb{C})$-representation variety. For ranks $1$ and $2$, we explicitly describe this stratification and compute the motives of these varieties in terms of the Lefschetz motive $q=[\mathbb{C}]$ in the Grothendieck ring of complex algebraic varieties $K_0(\mathbf{Var}_{\mathbb{C}})$.

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BibTeXRIS

Ángel Molina-Navarro. 2026-05-13. Stratification of $\mathrm{AGL}_r(\mathbb{C})$-representation varieties of twisted Hopf links. https://arxiv.org/abs/2605.13585

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