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Quantum N-toroidal algebras are generalizations of quantum affine algebras and quantum toroidal algebras. In this paper we construct a level-one vertex representation of the quantum N-toroidal algebra for type C. In particular, we also…

Quantum Algebra · Mathematics 2022-01-25 Naihuan Jing , Zhucheng Xu , Honglian Zhang

We have already seen simple representations of modular Lie algebras of $A_l$-type and $C_l$-type. We shall further investigate simple representations of $B_l$ type, which turn out to be very similar in methodology as those types except for…

General Mathematics · Mathematics 2020-03-20 YangGon Kim

We apply the theory of weighted bicategorical colimits to study the problem of existence and computation of such colimits of birepresentations of finitary bicategories. The main application of our results is the complete classification of…

Representation Theory · Mathematics 2024-08-28 Mateusz Stroiński

For any root system corresponding to a semisimple simply-laced Lie algebra a logarithmic CFT is constructed. Characters of irreducible representations were calculated in terms of theta functions.

Quantum Algebra · Mathematics 2010-03-01 B. L. Feigin , I. Yu. Tipunin

In this work, we construct some irreducible components of the space of two-dimensional holomorphic foliations on $\mathbb{P}^n$ associated to some algebraic representations of the affine Lie algebra $\mathfrak{aff}(\mathbb{C})$. We give a…

Algebraic Geometry · Mathematics 2018-10-03 Raphael Constant da Costa

Two-dimensional conformal field theory (CFT) can be defined through its correlation functions. These must satisfy certain consistency conditions which arise from the cutting of world sheets along circles or intervals. The construction of a…

Category Theory · Mathematics 2008-11-26 Ingo Runkel , Jens Fjelstad , Jurgen Fuchs , Christoph Schweigert

We consider algebras in a modular tensor category C. If the trace pairing of an algebra A in C is non-degenerate we associate to A a commutative algebra Z(A), called the full centre, in a doubled version of the category C. We prove that two…

Category Theory · Mathematics 2009-02-24 Liang Kong , Ingo Runkel

We construct representation theory of Lie algebras with filtrations. In this framework a classification of irreducible representations is obtained and spectra of some reducible representations are found.

Representation Theory · Mathematics 2012-03-01 A. N. Panov

We introduce the class of isotypic $2$-representations for finitary $2$-categories and the notion of inflation of $2$-representations. Under some natural assumptions we show that isotypic $2$-representations are equivalent to inflations of…

Representation Theory · Mathematics 2016-12-30 Volodymyr Mazorchuk , Vanessa Miemietz

This is an invited contribution to the 2nd edition of the Encyclopedia of Mathematical Physics. We review the following algebraic structures which appear in two-dimensional conformal field theory (CFT): The symmetries of two-dimensional…

Quantum Algebra · Mathematics 2024-12-05 Jürgen Fuchs , Christoph Schweigert , Simon Wood , Yang Yang

We study the question of whether or not contractive representations of logmodular algebras are completely contractive. We prove that a 2-contractive representation of a logmodular algebra extends to a positive map on the enveloping…

Operator Algebras · Mathematics 2010-03-24 Vern I. Paulsen , Mrinal Raghupathi

We study 2-representations of finitary 2-categories with involution and adjunctions by functors on module categories over finite dimensional algebras. In particular, we define, construct and describe in detail (right) cell 2-representations…

Representation Theory · Mathematics 2019-02-20 Volodymyr Mazorchuk , Vanessa Miemietz

We formulate two-dimensional rational conformal field theory as a natural generalization of two-dimensional lattice topological field theory. To this end we lift various structures from complex vector spaces to modular tensor categories.…

High Energy Physics - Theory · Physics 2009-11-07 J. Fuchs , I. Runkel , C. Schweigert

The goal of this paper is to present some results and (more importantly) state a number of conjectures suggesting that the representation theory of symplectic reflection algebras for wreath products categorifies certain structures in the…

Representation Theory · Mathematics 2012-02-10 Pavel Etingof

Many combinatorial proofs rely on induction. When these proofs are formulated in traditional language, they can be bulky and unmanageable. Coalgebras provide a language which can reduce reduce many inductive proofs in graded poset theory to…

Combinatorics · Mathematics 2022-10-07 MLE Slone

Let C be the category of finite-dimensional representations of a quantum affine algebra of simply-laced type. We introduce certain monoidal subcategories C_l (l integer) of C and we study their Grothendieck rings using cluster algebras.

Quantum Algebra · Mathematics 2019-12-19 David Hernandez , Bernard Leclerc

We establish a general method to produce cofibrant approximations in the model category $U_S(C,D)$ of $S$-valued $C$-indexed diagrams with $D$-weak equivalences and $D$-fibrations. We also present explicit examples of such approximations.…

K-Theory and Homology · Mathematics 2007-05-23 Paul Balmer , Michel Matthey

We construct a duality functor on the category of continuous representations of linearly compact Lie superalgebras, using representation theory of Lie conformal superalgebras. We compute the dual representations of the generalized Verma…

Representation Theory · Mathematics 2021-04-16 Nicoletta Cantarini , Fabrizio Caselli , Victor Kac

We prove that over an algebraically closed field there is a representation embedding from the category of classical Kronecker-modules without the simple injective into the category of finite-dimensional modules over any…

Representation Theory · Mathematics 2023-05-30 Klaus Bongartz

We continue the study of the effective content of $K$-theory for C*-algebras, with a focus on AF algebras. We show that from a c.e. presentation of an AF algebra it is possible to compute a representation of the algebra as an inductive…

Operator Algebras · Mathematics 2026-02-09 Christopher J. Eagle , Isaac Goldbring , Timothy H. McNicholl