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A Categorical Framework for the Direct Integration of Banach Spaces

Daniel Funck, Giacomo Gavelli

Source record

Source: arXiv

Published: Aug 26, 2026

arXiv: 2608.25603

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Source abstract

We construct a categorical framework in which we can view the direct integral as a functor taking as input objects in a certain category of Abstract Banach bundles and outputting a Banach space. We do this by constructing a quasi-abelian category of abstract Banach bundles, and we prove certain foundational and theoretical results about this category and its objects. As a consequence, we are able to define a notion of direct integral of sheaves.

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A Categorical Framework for the Direct Integration of Banach Spaces — Mathematical Frontier Network