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Entanglement transformation of composite quantum systems is investigated in the context of group representation theory. Representation of the direct product group $SL(2,C)\otimes SL(2,C)$, composed of local operators acting on the binary…

Quantum Physics · Physics 2009-11-07 Li-Xiang Cen , Xin-Qi Li , YiJing Yan

We prove, when $S$ is a $2$-group of order at most $2^9$, that each reduced fusion system over $S$ is the fusion system of a finite simple group and is tame. It then follows that each saturated fusion system over a $2$-group of order at…

Group Theory · Mathematics 2021-02-02 Kasper K. S. Andersen , Bob Oliver , Joana Ventura

In this article, we investigate monoidal, braided, sylleptic centralizers of monoidal, braided, sylleptic 2-functors. We specifically focus on multifusion 2-categories and show that monoidal, braided, sylleptic centralizers are multifusion…

Category Theory · Mathematics 2025-03-18 Hao Xu

A (2,*)-group is a group that can be generated by two elements, one of which is an involution. We describe the method we have used to produce a census of all (2,*)-groups of order at most 6 000. Various well-known combinatorial structures…

Group Theory · Mathematics 2015-05-06 Primož Potočnik , Pablo Spiga , Gabriel Verret

The structural, electronic and magnetic properties of Co$_n$ clusters ($n=2-$20) have been investigated using density functional theory within the pseudopotential plane wave method. An unusual hexagonal growth pattern has been observed in…

Atomic and Molecular Clusters · Physics 2015-05-13 S. Datta , M. Kabir , S. Ganguly , B. Sanyal , T. Saha-Dasgupta , A. Mookerjee

A second countable virtually free pro-p group all of whose torsion elements have finite centralizer is the free pro-p product of finite p-groups and a free pro-p factor.

Group Theory · Mathematics 2014-08-12 John MacQuarrie , Pavel Zalesskii

The general structure of the representation theory of a $Z_2$-graded coalgebra is discussed. The result contains the structure of Fourier analysis on compact supergroups and quantisations thereof as a special case. The general linear…

High Energy Physics - Theory · Physics 2009-10-28 A. Hüffmann

We prove that when totally real (resp., complex) monogenized cubic number fields are ordered by height, the second moment of the size of the $2$-class group is at most $3$ (resp., at most $6$). In the totally real case, we further prove…

Number Theory · Mathematics 2025-06-09 Manjul Bhargava , Arul Shankar , Ashvin Swaminathan

We construct a group measure space II$_1$ factor that has two non-conjugate Cartan subalgebras. We show that the fundamental group of the II$_1$ factor is trivial, while the fundamental group of the equivalence relation associated with the…

Operator Algebras · Mathematics 2013-02-06 Jan Keersmaekers , An Speelman

This paper mainly studies the ResLieDer pair in characteristic 2, that is, a restricted Lie algebra with a restricted derivation. We define the restricted representation of a ResLieDer pair and the corresponding cohomology complex. We show…

Rings and Algebras · Mathematics 2024-06-13 Dan Mao , Liangyun Chen

Using the Luthar--Passi method, we investigate the possible orders and partial augmentations of torsion units of the normalized unit group of integral group rings of Conway simple groups $Co_1$, $Co_2$ and $Co_3$.

Rings and Algebras · Mathematics 2010-12-22 V. Bovdi , A. Konovalov , S. Linton

For a CSA group $G$ and a wide class of abelian groups $A$ we give an explicit construction for the tensor $A$-completion of $G$ using free products with amalgamations. We apply the obtained results to the study of basic properties of…

Group Theory · Mathematics 2008-02-03 Alexey Myasnikov , Vladimir Remeslennikov

Let $G$ be a group. Two elements $x,y \in G$ are said to be in the same $z$-class if their centralizers in $G$ are conjugate within $G$. Consider $\mathbb F$ a perfect field of characteristic $\neq 2$, which has a non-trivial Galois…

Group Theory · Mathematics 2019-10-15 Sushil Bhunia , Anupam Singh

This paper proposes a new class of copulas which characterize the set of all twice continuously differentiable copulas. We show that our proposed new class of copulas is a new generalized copula family that include not only asymmetric…

Methodology · Statistics 2012-10-11 Saikat Mukherjee , Farhad Jafari , Jong-Min Kim

The c-dimension of a group G is the maximal length of a chain of nested centralizers in G. We prove that a locally finite group of finite c-dimension k has less than 5k nonabelian composition factors.

Group Theory · Mathematics 2018-10-30 Alexandr Buturlakin , Andrey V. Vasil'ev

How far can the elementary description of centralizers of parabolic subalgebras of Hecke algebras of finite real reflection groups be generalized to the complex reflection group case? In this paper we begin to answer this question by…

Representation Theory · Mathematics 2007-07-20 Andrew Francis

The Clifford group is the quotient of the normalizer of the Weyl-Heisenberg group in dimension $d$ by its centre. We prove that when $d$ is not prime the Clifford group is not a group unitary $2$-design. Furthermore, we prove that the…

Quantum Physics · Physics 2021-08-10 Matthew A. Graydon , Joshua Skanes-Norman , Joel J. Wallman

The description of complex configuration is a difficult issue. We present a powerful technique for cluster identification and characterization. The scheme is designed to treat with and analyze the experimental and/or simulation data from…

Statistical Mechanics · Physics 2013-08-29 Guangcai Zhang , Aiguo Xu , Guo Lu , Zeyao Mo

A presentation of the centralizer of the three-fold tensor product of the spin $s$ representation of the quantum group $U_q(\mathfrak{sl}_2)$ is provided. It is expressed as a quotient of the Askey-Wilson braid algebra. This newly defined…

Representation Theory · Mathematics 2023-07-13 Nicolas Crampe , Loic Poulain d'Andecy , Luc Vinet , Meri Zaimi

We construct W-algebra generalizations of the ^sl(2) algebra -- W-algebras W^{(2)}_n generated by two currents E and F with the highest pole of order n in their OPE. The n=3 term in this series is the Bershadsky--Polyakov algebra. We define…

Quantum Algebra · Mathematics 2009-11-10 BL Feigin , AM Semikhatov