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We construct a Young wall model for higher level $A_2^{(2)}$-type adjoint crystals. The Young walls and reduced Young walls are defined in connection with affin energy function. We prove that the affine crystal consisiting of reduced Young…

Representation Theory · Mathematics 2017-10-13 Seok-Jin Kang

For the exceptional types $E_6$, $E_7$, and $E_8$, we prove that the specializations at roots of unity of the quantum dimensions of the Kirillov-Reshetikhin modules give real solutions of $\ell$-restricted $Q$-systems, as conjectured by…

Representation Theory · Mathematics 2013-07-11 Anne-Sophie Gleitz

We describe two crystal structures on set-valued decomposition tableaux. These provide the first examples of interesting "$K$-theoretic" crystals on shifted tableaux. Our first crystal is modeled on a similar construction of Monical,…

Combinatorics · Mathematics 2026-01-05 Eric Marberg , Kam Hung Tong

The Key map is an important tool in the determination of the Demazure crystals associated to Kac-Moody algebras. In finite type A, it can be computed in the tableau realization of crystals by a simple combinatorial procedure due to Lascoux…

Combinatorics · Mathematics 2019-10-28 Nicolas Jacon , Cédric Lecouvey

For any finite graph Gamma and any field K of characteristic unequal to 2 we construct an algebraic variety X over K whose K-points parameterise K-Lie algebras generated by extremal elements, corresponding to the vertices of the graph, with…

Rings and Algebras · Mathematics 2017-10-10 Jan Draisma , Jos in 't panhuis

The Lascoux-Leclerc-Thibon-Ariki theory asserts that the K-group of the representations of the affine Hecke algebras of type A is isomorphic to the algebra of functions on the maximal unipotent subgroup of the group associated with a Lie…

Quantum Algebra · Mathematics 2015-12-22 Masaki Kashiwara , Vanessa Miemietz

We study, in the path realization, crystals for Demazure modules of affine Lie algebras of types $A^{(1)}_n,B^{(1)}_n,C^{(1)}_n,D^{(1)}_n, A^{(2)}_{2n-1},A^{(2)}_{2n}, and D^{(2)}_{n+1}$. We find a special sequence of affine Weyl group…

q-alg · Mathematics 2008-02-03 A. Kuniba , K. C. Misra , M. Okado , T. Takagi , J. Uchiyama

We study the crystal graphs of irreducible $U_{v}(\hat{sl}}_{e})$-modules of higher level l. Generalizing works of the first author, we obtain a simple description of the bijections between the classes of multipartitions which naturally…

Representation Theory · Mathematics 2010-06-28 Nicolas Jacon , Cédric Lecouvey

We prove that the specialization to q=1 of a Kirillov-Reshetikhin module for an untwisted quantum affine algebra of classical type is projective in a suitable category. This yields a uniform character formula for the Kirillov-Reshetikhin…

Quantum Algebra · Mathematics 2011-02-10 Vyjayanthi Chari , Jacob Greenstein

We construct an explicit algorithm of the static-preserving bijection between the rigged configurations and the highest weight paths of the form $(B^{2,1})^{\otimes L}$ in the $G_{2}^{(1)}$ adjoint crystals.

Combinatorics · Mathematics 2021-04-27 Toya Hiroshima

Our previous work introduced a category of extended queer crystals, whose connected normal objects have unique highest weight elements and characters that are Schur $Q$-polynomials. The initial models for such crystals were based on…

Combinatorics · Mathematics 2026-01-05 Eric Marberg , Kam Hung Tong

For an affine algebra of nonexceptional type in the large rank we show the fermionic formula depends only on the attachment of the node 0 of the Dynkin diagram to the rest, and the fermionic formula of not type A can be expressed as a sum…

Quantum Algebra · Mathematics 2011-09-23 Masato Okado , Reiho Sakamoto

We establish the equality of the specialization $E_{w\lambda}(x;q,0)$ of the nonsymmetric Macdonald polynomial $E_{w\lambda}(x;q,t)$ at $t=0$ with the graded character $\mathop{\rm gch} U_{w}^{+}(\lambda)$ of a certain Demazure-type…

Quantum Algebra · Mathematics 2017-07-19 Cristian Lenart , Satoshi Naito , Daisuke Sagaki , Anne Schilling , Mark Shimozono

Recently, the analogue of the promotion operator on crystals of type A under a generalization of the bijection of Kerov, Kirillov and Reshetikhin between crystals (or Littlewood--Richardson tableaux) and rigged configurations was proposed.…

Combinatorics · Mathematics 2010-02-09 Anne Schilling , Qiang Wang

We construct a Lax pair for the $E^{(1)}_6 $ $q$-Painlev\'e system from first principles by employing the general theory of semi-classical orthogonal polynomial systems characterised by divided-difference operators on discrete, quadratic…

Classical Analysis and ODEs · Mathematics 2012-12-12 Nicholas S. Witte , Christopher M. Ormerod

We introduce a type $A$ crystal structure on decreasing factorizations of fully-commutative elements in the 0-Hecke monoid which we call $\star$-crystal. This crystal is a $K$-theoretic generalization of the crystal on decreasing…

Combinatorics · Mathematics 2020-06-18 Jennifer Morse , Jianping Pan , Wencin Poh , Anne Schilling

We define and study the Kirillov--Reshetikhin modules for algebras of type $G_2$. We compute the graded character of these modules and verify that they are in accordance with the conjectures in math.QA/981202 and math.QA/0102113. These…

Representation Theory · Mathematics 2008-11-26 Vyjayanthi Chari , Adriano Moura

Generalized double affine Hecke algebras (GDAHA) are flat deformations of the group algebras of $2$-dimensional crystallographic groups associated to star-shaped simply laced affine Dynkin diagrams. In this paper, we first construct a…

Quantum Algebra · Mathematics 2024-07-04 Davide Dal Martello , Marta Mazzocco

We prove that the category of finitely generated graded modules over the quiver Hecke algebra of arbitrary type admits numerous stratifications in the sense of Kleshchev. A direct consequence is that the full subcategory corresponding to…

Representation Theory · Mathematics 2025-01-22 Haruto Murata

We give a reformulation of a six-parameter family of coupled Painlev\'e VI systems with affine Weyl group symmetry of type $D_6^{(1)}$ from the viewpoint of its symmetry and holomorphy properties.

Algebraic Geometry · Mathematics 2010-11-04 Yusuke Sasano
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