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Related papers: On odd-dimensional modular tensor categories

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We prove that any odd-dimensional modular category of rank at most 23 is pointed. We also show that an odd-dimensional modular category of rank 25 is either pointed, perfect, or equivalent to $\operatorname{Rep}(D^\omega(\mathbb Z_7\rtimes…

Quantum Algebra · Mathematics 2023-11-01 Agustina Czenky , William Gvozdjak , Julia Plavnik

We study exact module categories over the representation categories of finite-dimensional quasi-Hopf algebras. As a consequence we classify exact module categories over some families of pointed tensor categories with cyclic group of…

Quantum Algebra · Mathematics 2011-09-12 César Galindo , Martín Mombelli

We prove that a non-pointed maximally non-self-dual (MNSD) modular category of Frobenius-Perron (FP) dimension less than $2025$ has at most two possible types, and all these types can be realized except those of FP dimension $675$, $729$…

Quantum Algebra · Mathematics 2023-08-15 Fengshuo Xu , Jingcheng Dong

It is a well-known result of Etingof, Nikshych and Ostrik that there are finitely many inequivalent integral modular categories of any fixed rank $n$. This follows from a double-exponential bound on the maximal denominator in an Egyptian…

Quantum Algebra · Mathematics 2010-12-09 Paul Bruillard , Eric C. Rowell

By a tensor we mean an element of a tensor product of vector spaces over a field. Up to a choice of bases in factors of tensor products, every tensor may be coordinatized, that is, represented as an array consisting of numbers. This note is…

Functional Analysis · Mathematics 2019-01-11 R. N. Gumerov , A. S. Sharafutdinov

The results of Strassen and Raz show that good enough tensor rank lower bounds have implications for algebraic circuit/formula lower bounds. We explore tensor rank lower and upper bounds, focusing on explicit tensors. For odd d, we…

Computational Complexity · Computer Science 2012-03-05 Boris Alexeev , Michael Forbes , Jacob Tsimerman

We pursue a classification of low-rank super-modular categories parallel to that of modular categories. We classify all super-modular categories up to rank=$6$, and spin modular categories up to rank=$11$. In particular, we show that, up to…

Quantum Algebra · Mathematics 2018-11-01 Paul Bruillard , César Galindo , Siu-Hung Ng , Julia Yael Plavnik , Eric C. Rowell , Zhenghan Wang

We use the computer algebra system GAP to classify modular data up to rank 12. This extends the previously obtained classification of modular data up to rank 6. Our classification includes all the modular data from modular tensor categories…

Quantum Algebra · Mathematics 2025-07-04 Siu-Hung Ng , Eric C. Rowell , Xiao-Gang Wen

Modular Tensor Categories (MTC's) arise in the study of certain condensed matter systems. There is an ongoing program to classify MTC's of low rank, up to modular data. We present an overview of the methods to classify modular tensor…

Quantum Algebra · Mathematics 2020-08-07 David Green

We classify all unitary modular tensor categories (UMTCs) of rank $\leq 4$. There are a total of 70 UMTCs of rank $\leq 4$ (Note that some authors would have counted as 35 MTCs.) In our convention there are two trivial unitary MTCs…

Quantum Algebra · Mathematics 2009-11-09 Eric Rowell , Richard Stong , Zhenghan Wang

In this paper, we show that there are infinitely many semisimple tensor (or monoidal) categories of rank two over an algebraically closed field $\mathbb F$.

Category Theory · Mathematics 2023-12-13 Hua Sun , Hui-Xiang Chen , Yinhuo Zhang

We develop a symbolic computational approach to classifying low-rank modular categories. We use this technique to classify pseudo-unitary modular categories of rank at most 5 that are non-self-dual, i.e. those for which some object is not…

Quantum Algebra · Mathematics 2009-07-13 Seung-Moon Hong , Eric C. Rowell

This paper classifies all modular data of integral modular fusion categories up to rank 13. Furthermore, it also classifies all integral half-Frobenius fusion rings up to rank 12. We find that each perfect integral modular fusion category…

Quantum Algebra · Mathematics 2026-01-16 Max A. Alekseyev , Winfried Bruns , Sebastien Palcoux , Fedor V. Petrov

We define fully exact module categories, a subclass of exact module categories over a finite braided tensor category that is stable under the relative Deligne product. In contrast, we demonstrate with examples in both zero and non-zero…

Quantum Algebra · Mathematics 2026-01-30 Azat M. Gainutdinov , Robert Laugwitz

In various application fields, tensor type data are used recently and then a typical rank is important. Although there may be more than one typical ranks over the real number field, a generic rank over the complex number field is the…

Rings and Algebras · Mathematics 2010-08-09 Toshio Sumi , Toshio Sakata , Mitsuhiro Miyazaki

We describe equivalence classes of exact indecomposable module categories over a finite graded tensor category. When applied to a pointed fusion category, our results coincide with the ones obtained in [S. Natale, On the equivalence of…

Quantum Algebra · Mathematics 2020-04-10 Adriana Mejía Castaño , Martín Mombelli

We study the classification of submodules of module categories over monoidal categories, extending ideas of Coulembier on the classification of tensor ideals in monoidal categories. We develop a framework that applies to module categories…

Representation Theory · Mathematics 2026-03-20 Hadi Salmasian , Alistair Savage , Yaolong Shen

We classify all modular categories of dimension $4m$, where $m$ is an odd square-free integer, and all ranks $6$ and $7$ weakly integral modular categories. This completes the classification of weakly integral modular categories through…

Quantum Algebra · Mathematics 2015-05-14 Paul Bruillard , César Galindo , Siu-Hung Ng , Julia Plavnik , Eric C. Rowell , Zhenghan Wang

We develop some techniques to the study of exact module categories over some families of pointed finite-dimensional Hopf algebras. As an application we classify exact module categories over the tensor category of representations of the…

Quantum Algebra · Mathematics 2009-06-23 Martin Mombelli

There has been continued interest in seeking a theorem describing optimal low-rank approximations to tensors of order 3 or higher, that parallels the Eckart-Young theorem for matrices. In this paper, we argue that the naive approach to this…

Numerical Analysis · Mathematics 2008-04-01 Vin de Silva , Lek-Heng Lim
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