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Duality theory (Mathematics) --- Dualité, Principe de (mathématiques) --- Algèbre universelle. --- Algebra, Universal

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Duality theory (Mathematics) --- Dualité, Principe de (mathématiques) --- Algèbre universelle. --- Algebra, Universal

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"We investigate the relationship between the algebra of tensor categories and the topology of framed 3-manifolds. On the one hand, tensor categories with certain algebraic properties determine topological invariants. We prove that fusion categories of nonzero global dimension are 3-dualizable, and therefore provide 3- dimensional 3-framed local field theories. We also show that all finite tensor categories are 2-dualizable, and yield categorified 2-dimensional 3-framed local field theories. On the other hand, topological properties of 3-framed manifolds determine algebraic equations among functors of tensor categories. We show that the 1-dimensional loop bordism, which exhibits a single full rotation, acts as the double dual autofunctor of a tensor category. We prove that the 2-dimensional belt-trick bordism, which unravels a double rotation, operates on any finite tensor category, and therefore supplies a trivialization of the quadruple dual. This approach produces a quadruple-dual theorem for suitably dualizable objects in any symmetric monoidal 3-category. There is furthermore a correspondence between algebraic structures on tensor categories and homotopy fixed point structures, which in turn provide structured field theories; we describe the expected connection between pivotal tensor categories and combed fixed point structures, and between spherical tensor categories and oriented fixed point structures"--

Categories (Mathematics) --- Tensor fields. --- Duality theory (Mathematics) --- Calculus of tensors. --- Calcul tensoriel --- Dualité, Principe de (mathématiques) --- Catégories (mathématiques)

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Banach spaces --- Duality theory (Mathematics) --- Mappings (Mathematics) --- Banach, Espaces de --- Dualité, Principe de (Mathématiques) --- Applications (Mathématiques) --- Banach spaces. --- Dualité, Principe de (Mathématiques) --- Applications (Mathématiques)

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Functional analysis --- Linear topological spaces --- Duality theory (Mathematics) --- Locally convex spaces --- Linear operators --- Analyse fonctionnelle --- Espaces vectoriels topologiques --- Dualité, Principe de (mathématiques) --- Espaces localement convexes --- Opérateurs linéaires