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arXiv · 2610.41578

Tropicalization and Polyhedral Completions of Weyl Algebras

Jen-Chieh Hsiao
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Abstract

We construct weighted and polyhedral completions of the Weyl algebra over a complete nonarchimedean field and organize them into a structure sheaf on a polyhedral $G$-site. For discretely valued fields, we prove two-sided flatness for $Γ$-rational polyhedral completions, yielding exact base change for finitely generated $D$-modules. For compact integral polyhedra, we also construct finite-type integral models whose special fibers are toric face rings and describe the reduction of Gauss points in terms of toric strata.

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Jen-Chieh Hsiao. 2026-10-30. Tropicalization and Polyhedral Completions of Weyl Algebras. https://arxiv.org/abs/2610.41578

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