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We categorify representations of quantum sl(n) whose highest weight is twice a fundamental weight.

Quantum Algebra · Mathematics 2007-05-23 Ruth Stella Huerfano , Mikhail Khovanov

We construct knot invariants categorifying the quantum knot variants for all representations of quantum groups. We show that these invariants coincide with previous invariants defined by Khovanov for sl_2 and sl_3 and by Mazorchuk-Stroppel…

Geometric Topology · Mathematics 2017-11-15 Ben Webster

In this paper I define certain interesting 2-functors from the Khovanov-Lauda 2-category which categorifies quantum sl(k), for any k>1, to a 2-category of universal sl(3) foams with corners. For want of a better name I use the term…

Quantum Algebra · Mathematics 2009-05-14 Marco Mackaay

A 2-category was introduced in arXiv:0803.3652 [math.QA] that categorifies Lusztig's integral version of quantum sl(2). Here we construct for each positive integer N arepresentation of this 2-category using the equivariant cohomology of…

Quantum Algebra · Mathematics 2011-04-04 Aaron D. Lauda

Given a strong 2-representation of a Kac-Moody Lie algebra (in the sense of Rouquier) we show how to extend it to a 2-representation of categorified quantum groups (in the sense of Khovanov-Lauda). This involves checking certain extra…

Quantum Algebra · Mathematics 2015-02-24 Sabin Cautis , Aaron D. Lauda

In this paper, we study 2-representations of 2-quantum groups (in the sense of Rouquier and Khovanov-Lauda) categorifying tensor products of irreducible representations. Our aim is to construct knot homologies categorifying…

Geometric Topology · Mathematics 2013-05-06 Ben Webster

We categorify Lusztig's version of the quantized enveloping algebra for sl(2). Using a graphical calculus a 2-category is constructed whose split Grothendieck ring is isomorphic to Lusztig's algebra. The indecomposable morphisms of this…

Quantum Algebra · Mathematics 2010-10-22 Aaron D. Lauda

We define a supercategorification of the $q$-Schur algebra of level two and an odd analogue of $\mathfrak{gl}_2$-foams. Using these constructions, we define a homological invariant of tangles, and show that it coincides with odd Khovanov…

Geometric Topology · Mathematics 2024-03-05 Léo Schelstraete , Pedro Vaz

The purpose of this paper is to study categorifications of tensor products of finite dimensional modules for the quantum group for sl(2). The main categorification is obtained using certain Harish-Chandra bimodules for the complex Lie…

Quantum Algebra · Mathematics 2007-06-13 Igor Frenkel , Mikhail Khovanov , Catharina Stroppel

We construct a 2-functor from the Kac-Moody 2-category for the extended quantum affine sl(3) to the homotopy 2-category of bounded chain complexes with values in the Kac-Moody 2-category for quantum gl(3), categorifying the evaluation map…

Quantum Algebra · Mathematics 2026-03-11 Marco Mackaay , James Macpherson , Pedro Vaz

A representation of the Quantum Toroidal Algebra of type sl(N) is constructed on every irreducible integrable highest weight module of the Quantum Affine Algebra of type gl(N). As an intermediate step in the construction, we obtain a…

Quantum Algebra · Mathematics 2007-05-23 K. Takemura , D. Uglov

We categorify a coideal subalgebra of the quantum group of $\mathfrak{sl}_{2r+1}$ by introducing a $2$-category \`a la Khovanov-Lauda-Rouquier, and show that self-dual indecomposable $1$-morphisms categorify the canonical basis of this…

Representation Theory · Mathematics 2022-11-18 Huanchen Bao , Peng Shan , Weiqiang Wang , Ben Webster

We show that Khovanov homology (and its sl(3) variant) can be understood in the context of higher representation theory. Specifically, we show that the combinatorially defined foam constructions of these theories arise as a family of…

Quantum Algebra · Mathematics 2015-12-01 Aaron D. Lauda , Hoel Queffelec , David E. V. Rose

We categorify the extended affine Hecke algebra and the affine quantum Schur algebra S(n,r) for 2 < r < n, using Elias-Khovanov and Khovanov-Lauda type diagrams. We also define the affine analogue of the Elias-Khovanov and the…

Quantum Algebra · Mathematics 2014-01-31 Marco Mackaay , Anne-Laure Thiel

We construct knot invariants categorifying the quantum knot variants for all representations of quantum groups. We show that these invariants coincide with previous invariants defined by Khovanov for sl(2) and sl(3) and by…

Geometric Topology · Mathematics 2013-05-06 Ben Webster

We build extensions of the arc rings, relate their centers to the cohomology rings of the Springer varieties, and categorify all level two representations of quantum sl(N).

Quantum Algebra · Mathematics 2007-05-23 Yanfeng Chen

We categorify a class of quantum groups associated with quivers, possibly with loops, by constructing the corresponding Khovanov-Lauda-Rouquier algebras (KLR) algebras $R$. We prove that the indecomposable projective $R$-modules realize the…

Quantum Algebra · Mathematics 2026-02-03 Seok-Jin Kang , Young Rock Kim , Bolun Tong

We give an introductory account of Khovanov's categorification of the Heisenberg algebra, and construct a combinatorial model for it in a 2-category of spans of groupoids. We also treat a categorification of $U(sl_n)$ in a similar way.…

Quantum Algebra · Mathematics 2013-11-14 Jeffrey C. Morton , Jamie Vicary

Let $U$ be a quantized enveloping algebra. We consider the adjoint action of an $\mathfrak{sl}_2$-subalgebra of $U$ on a subalgebra of $U^+$ that is maximal integrable for this action. We categorify this representation in the context of…

Quantum Algebra · Mathematics 2020-02-03 Laurent Vera

We present a necessary and sufficient condition for a finite-dimensional highest weight representation of the $sl_2$ loop algebra to be irreducible. In particular, for a highest weight representation with degenerate parameters of the…

Mathematical Physics · Physics 2007-07-04 Tetsuo Deguchi
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