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arXiv · 2604.10028

Notes on the decomposition theorem for blowups

Hiroshi Iritani
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Abstract

We discuss arithmetic and Hodge-theoretic properties of the isomorphisms appearing in the decomposition theorem for quantum cohomology of blowups. These properties underpin the application to the rationality questions by Katzarkov-Kontsevich-Pantev-Yu.

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Hiroshi Iritani. 2026-04-11. Notes on the decomposition theorem for blowups. https://arxiv.org/abs/2604.10028

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