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Smooth sets of fields: A pedagogical introduction (2510.20422v1)
Published 23 Oct 2025 in math-ph and math.MP
Abstract: In order to provide a good categorical setting to the many different spaces of fields arising in the description of physical theories, a pedagogical introduction to the categorical notion of smooth sets is provided and some simple properties of the topos of smooth sets are discussed. The introduction of geometrical structures into such spaces is illustrated via the specific examples of the tangent functor and the variational bicomplex.
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