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It is well known that braided monoidal categories are the categorical algebras of the little two-dimensional disks operad. We introduce involutive little disks operads, which are Z/2Z-orbifold versions of the little disks operads. We…

Quantum Algebra · Mathematics 2018-04-09 T. A. N. Weelinck

We classify the irreducible projective representations of symmetric and alternating groups of minimal possible and second minimal possible dimensions, and get a lower bound for the third minimal dimension. On the way we obtain some new…

Representation Theory · Mathematics 2011-12-19 Alexander S. Kleshchev , Pham Huu Tiep

In this paper we give the classification of the irreducible non solvable Lie algebras of dimensions $\leq 13$ with nondegenerate, symmetric and invariant bilinear forms.

Rings and Algebras · Mathematics 2015-06-19 Said Benayadi , Alberto Elduque

We classify all division algebras that are principal Albert isotopes of a cyclic Galois field extension of degree $n>2$ up to isomorphisms. We achieve a ``tight'' classification when the cyclic Galois field extension is cubic. The…

Rings and Algebras · Mathematics 2025-02-28 Susanne Pumpluen

We classify finite-dimensional complex Hopf algebras $A$ which are pointed, that is, all of whose irreducible comodules are one-dimensional, and whose group of group-like elements $G(A)$ is abelian such that all prime divisors of the order…

Quantum Algebra · Mathematics 2010-06-29 N. Andruskiewitsch , H. -J. Schneider

We give a minimal system of 476 generators (resp. 510 generators) for the algebra of SL(2,C)-covariant polynomials on binary forms of degree 9 (resp. degree 10). These results were only known as conjectures so far. The computations rely on…

Algebraic Geometry · Mathematics 2015-09-30 Reynald Lercier , Marc Olive

Leibniz algebras are certain generalization of Lie algebras. In this paper we give classification of non-Lie solvable (left) Leibniz algebras of dimension $\leq 8$ with one dimensional derived subalgebra. We use the canonical forms for the…

Rings and Algebras · Mathematics 2016-02-25 Ismail Demir , Kailash C. Misra , Ernie Stitzinger

Close binary stars are binary stars where the component stars are close enough such that they can exchange mass and/or energy. They are subdivided into semi-detached, overcontact or ellipsoidal binary stars. A challenging problem in the…

Solar and Stellar Astrophysics · Physics 2020-01-08 Sandip V. George , R. Misra , G. Ambika

We characterise piecewise Boolean domains, that is, those domains that arise as Boolean subalgebras of a piecewise Boolean algebra. This leads to equivalent descriptions of the category of piecewise Boolean algebras: either as piecewise…

Logic in Computer Science · Computer Science 2014-07-15 Chris Heunen

We define a class of algebras describing links of binary isolating formulas on a set of realizations for a family of 1-types of a complete theory. We prove that a set of labels for binary isolating formulas on a set of realizations for a…

Logic · Mathematics 2012-05-16 Ilya V. Shulepov , Sergey V. Sudoplatov

We classify connected \'etale algebras in (possibly non-unitary) modular fusion categories $\mathcal B$'s with $\text{rank}(\mathcal B)\le5$. We also comment on Lagrangian algebra, anyon condensation, and physical applications. Concretely,…

Quantum Algebra · Mathematics 2024-05-03 Ken Kikuchi

Arbitrarily many pairwise inequivalent modular categories can share the same modular data. We exhibit a family of examples that are module categories over twisted Drinfeld doubles of finite groups, and thus in particular integral modular…

Quantum Algebra · Mathematics 2021-06-09 Michaël Mignard , Peter Schauenburg

In this work nul-filiform and filiform Zinbiel algebras are described up to isomorphism. Moreover, the classification of complex Zinbiel algebras is extended from dimensions $\leq 3$ up to the dimension $4.$

Rings and Algebras · Mathematics 2007-05-23 J. Q. Adashev , B. A. Omirov , A. Kh. Khudoyberdiyev

This paper determines almost symmetric numerical semigroups with maximal reduced type completely. In addition, this paper classifies MED-semigroups with maximal reduced type.

Commutative Algebra · Mathematics 2025-12-23 Akihiro Sugawara

A family of quantum cluster algebras is introduced and studied. In general, these algebras are new, but subclasses have been studied previously by other authors. The algebras are indexed by double partitions or double flag varieties.…

Quantum Algebra · Mathematics 2012-10-09 Hans Plesner Jakobsen , Hechun Zhang

We explain the construction of minimal tilting complexes for objects of highest weight categories and we study in detail the minimal tilting complexes for standard objects and simple objects. For certain categories of representations of…

Representation Theory · Mathematics 2022-11-21 Jonathan Gruber

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

Using the tensor category theory developed by Lepowsky, Zhang and the second author, we construct a braided tensor category structure with a twist on a semisimple category of modules for an affine Lie algebra at an admissible level. We…

Quantum Algebra · Mathematics 2018-08-29 Thomas Creutzig , Yi-Zhi Huang , Jinwei Yang

We give an explicit description of the mutation classes of quivers of type \tilde{A}_n. Furthermore, we provide a complete classification of cluster tilted algebras of type \tilde{A}_n up to derived equivalence. We show that the bounded…

Representation Theory · Mathematics 2012-02-15 Janine Bastian

With the advent of kernel methods, automating the task of specifying a suitable kernel has become increasingly important. In this context, the Multiple Kernel Learning (MKL) problem of finding a combination of pre-specified base kernels…

Machine Learning · Computer Science 2012-07-03 Abhishek Kumar , Alexandru Niculescu-Mizil , Koray Kavukcuoglu , Hal Daume
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