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We construct the tensor product for f-algebras, including proving a universal property for it, and investigate how it preserves algebraic properties of the factors.

Functional Analysis · Mathematics 2016-10-06 G. J. H. M. Buskes , A. W. Wickstead

We construct a tensor product on Freyd's universal abelian category attached to an additive tensor category or a tensor quiver and establish a universal property. This is used to give an alternative construction for the tensor product on…

Algebraic Geometry · Mathematics 2020-06-17 Luca Barbieri-Viale , Annette Huber , Mike Prest

As part of the study of correspondence functors, the present paper investigates their tensor product and proves some of its main properties. In particular, the correspondence functor associated to a finite lattice has the structure of a…

Representation Theory · Mathematics 2019-03-06 Serge Bouc , Jacques Thévenaz

In this paper we study the relative tensor product of module categories over braided fusion categories using, in part, the notion of the relative center of a module category. In particular we investigate the canonical tensor category…

Quantum Algebra · Mathematics 2011-10-18 Justin Greenough

A convenient technique for calculating completed topological tensor products of functional Frechet and DF spaces is developed. The general construction is applied to proving kernel theorems for a wide class of spaces of smooth and entire…

Functional Analysis · Mathematics 2009-03-06 A. G. Smirnov

The purpose of this article is to study the existence of Deligne's tensor product of abelian categories by comparing it with the well-known ten- sor product of finitely cocomplete categories. The main result states that the former exists…

Category Theory · Mathematics 2012-12-10 Ignacio Lopez Franco

We define a general product of two $n$-dimensional tensors $\mathbb {A}$ and $\mathbb {B}$ with orders $m\ge 2$ and $k\ge 1$, respectively. This product is a generalization of the usual matrix product, and satisfies the associative law.…

Combinatorics · Mathematics 2012-12-10 Jia-Yu Shao

We construct the categories of standard vector bundles over schemes and define direct sum and tensor product. These categories are equivalent to the usual categories of vector bundles with additional properties. The tensor product is…

Category Theory · Mathematics 2014-04-08 Youngsoo Kim

Tensor products of ultrafilters have special combinatorial features closely related to Ramsey's Theorem, making them useful tools in applications. Here we first review their fundamental properties and isolate some new ones, including a…

Combinatorics · Mathematics 2025-06-18 Mauro Di Nasso

The authors continue a series of articles studying certain unitary representations of the Richard Thompson groups $F,T,V$ called Pythagorean. They all extend to the Cuntz algebra $\mathcal{O}$ and conversely all representations of…

Operator Algebras · Mathematics 2024-08-23 Arnaud Brothier , Dilshan Wijesena

We define the twisted tensor product of two enriched categories, which generalizes various sorts of `products' of algebraic structures, including the bicrossed product of groups, the twisted tensor product of (co)algebras and the double…

Category Theory · Mathematics 2011-12-06 Aura Bârdeş , Dragoş Ştefan

In this paper, we complete the classification of representation-finite tensor product algebras in terms of quiver with relations.

Representation Theory · Mathematics 2024-07-17 Qi Wang

We review some recent results on properties of tensor product and fusion coefficients under complex conjugation of one of the factors. Some of these results have been proven, some others are conjectures awaiting a proof, one of them…

Mathematical Physics · Physics 2016-11-24 Robert Coquereaux , Jean-Bernard Zuber

We show that in a finite tensor category, the tensor product property holds for support varieties if and only if it holds between indecomposable periodic objects. We apply this to certain Hopf algebras in the form of skew group algebras. In…

Quantum Algebra · Mathematics 2024-06-07 Petter Andreas Bergh , Julia Yael Plavnik , Sarah Witherspoon

We define and study a certain relative tensor product of subfactors over a modular tensor category. This gives a relative tensor product of two completely rational heterotic full local conformal nets with trivial superselection structures…

Operator Algebras · Mathematics 2017-12-01 Yasuyuki Kawahigashi

We generalize the tensor product theory for modules for a vertex operator algebra previously developed in a series of papers by the first two authors to suitable module categories for a ``conformal vertex algebra'' or even more generally,…

Quantum Algebra · Mathematics 2007-05-23 Yi-Zhi Huang , James Lepowsky , Lin Zhang

Finite modules, finitely presented modules and Mittag-Leffler modules are characterized by their behaviour by tensoring with direct products of modules. In this paper, we study and characterize the functors of modules that preserve direct…

Commutative Algebra · Mathematics 2019-03-14 C. Sancho , F. Sancho , P. Sancho

The $\star_M$-family of tensor-tensor products is a framework which generalizes many properties from linear algebra to third order tensors. Here, we investigate positive semidefiniteness and semidefinite programming under the…

Optimization and Control · Mathematics 2025-07-18 Alex Dunbar , Elizabeth Newman

A graded tensor category over a group $G$ will be called a crossed product tensor category if every homogeneous component has at least one multiplicatively invertible object. Our main result is a description of the crossed product tensor…

Quantum Algebra · Mathematics 2015-10-12 César Galindo

We systematically develop the theory of definable functors between compactly generated triangulated categories. Such functors preserve pure triangles, pure injective objects, and definable subcategories, and as such appear in a wide range…

Category Theory · Mathematics 2025-03-03 Isaac Bird , Jordan Williamson
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