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arXiv · 2611.05209

Relative cohomology and base-change

Andres Fernandez Herrero·Giovanni Inchiostro
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Abstract

In this note we prove a simple generalization of cohomology and base-change which seems to be missing from standard sources. We illustrate its usefulness by providing an alternative proof of a result of Ishimura on descent of vector bundles along blowups at a smooth center.

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Andres Fernandez Herrero, Giovanni Inchiostro. 2026-11-03. Relative cohomology and base-change. https://arxiv.org/abs/2611.05209

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