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We generalize Lusztig's nilpotent varieties, and Kashiwara and Saito's geometric construction of crystal graphs from the symmetric to the symmetrizable case. We also construct semicanonical functions in the convolution algebras of…

Representation Theory · Mathematics 2018-11-15 Christof Geiß , Bernard Leclerc , Jan Schröer

We develop a characterisation of non-Archimedean derived analytic geometry based on dg enhancements of dagger algebras. This allows us to formulate derived analytic moduli functors for many types of pro-\'etale sheaves, and to construct…

Algebraic Geometry · Mathematics 2024-09-02 J. P. Pridham

We provide an explicit combinatorial description of the embedding of the crystal of Kashiwara-Nakashima tableaux in types $B$ and $C$ into that of $\bi$-Lusztig data associated to a family of reduced expressions $\bi$ of the longest element…

Representation Theory · Mathematics 2017-12-29 Jae-Hoon Kwon

In the recent papers with Masaki Kashiwara, the author introduced the notion of symmetric crystals and presented the Lascoux-Leclerc-Thibon-Ariki type conjectures for the affine Hecke algebras of type $B$. Namely, we conjectured that…

Representation Theory · Mathematics 2008-08-04 Naoya Enomoto

We give a formula for the crystal structure on the integer points of the string polytopes and the $*$-crystal structure on the integer points of the string cones of type $A$ for arbitrary reduced words. As a byproduct we obtain defining…

Representation Theory · Mathematics 2019-01-15 Volker Genz , Gleb Koshevoy , Bea Schumann

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 establish a version of Kashiwara's theorem for twisted sheaves of Berthelot's arithmetic differential operators for a closed immersion between smooth p-adic formal schemes. As an application, we construct simple modules for crystalline…

Algebraic Geometry · Mathematics 2021-06-09 Christine Huyghe , Tobias Schmidt

Let g = n^- + h + n^+ be a symmetrizable Kac-Moody algebra. Let B(\infty) be the Kashiwara crystal of U_q(n^-), let \lambda be a dominant integral weight, let T_\lambda = {t_\lambda} be the crystal with one element of weight \lambda, and…

Representation Theory · Mathematics 2012-10-25 Pierre Baumann , Stéphane Gaussent , Joel Kamnitzer

There are two parts to this work, which are largely independent. The first consists of a series of results concerning the crystal commutor of Henriques and Kamnitzer. We first describe the relationship between the crystal commutor and…

Quantum Algebra · Mathematics 2008-05-08 Peter Tingley

We introduce the edge Schur functions $E^{\lambda}$ that are defined as a generating series over edge labeled tableaux. We formulate $E^{\lambda}$ as the partition function for a solvable lattice model, which we use to show they are…

Combinatorics · Mathematics 2024-03-13 Ajeeth Gunna , Travis Scrimshaw

In this paper we introduce geometric crystals and unipotent crystals which are algebro-geometric analogues of Kashiwara's crystal bases. Given a reductive group G, let I be the set of vertices of the Dynkin diagram of G and T be the maximal…

Quantum Algebra · Mathematics 2007-05-23 Arkady Berenstein , David Kazhdan

On the polytope defined in Feigin, Fourier, and Littelmann (2011), associated to any rectangle highest weight, we define a structure of an type $A_n$-crystal. We show, by using the Stembridge axioms, that this crystal is isomorphic to the…

Representation Theory · Mathematics 2013-09-26 Deniz Kus

For types $A^{(1)}_n$ and $D^{(1)}_n$ we prove that the rigged configuration bijection intertwines the classical Kashiwara operators on tensor products of the arbitrary Kirillov-Reshetikhin crystals and the set of the rigged configurations.

Quantum Algebra · Mathematics 2014-03-28 Reiho Sakamoto

We explicitly describe the isomorphism between two combinatorial realizations of Kashiwara's infinity crystal in types B and C. The first realization is in terms of marginally large tableaux and the other is in terms of Kostant partitions…

Combinatorics · Mathematics 2025-05-14 Jackson Criswell , Ben Salisbury , Peter Tingley

We show that the set of increasing factorizations of fixed-point-free (FPF) involution words has the structure of queer supercrystals. By exploiting the algorithm of symplectic shifted Hecke insertion recently introduced by Marberg, we…

Combinatorics · Mathematics 2019-07-26 Toya Hiroshima

For the Kashiwara crystal of a highest weight representation of an affine Lie algebra of type A and rank e, with highest weight $\Lambda$, there is a labeling by multipartitions and by piecewise linear paths in the real weight space called…

Representation Theory · Mathematics 2020-07-30 Ola Amara-Omari , Mary Schaps

Using the theory of PBW bases, one can realize the crystal $B(\infty)$ for any semisimple Lie algebra over $\mathbf{C}$ using Kostant partitions as the underlying set. In fact there are many such realizations, one for each reduced…

Quantum Algebra · Mathematics 2025-05-14 Ben Salisbury , Adam Schultze , Peter Tingley

We compute, mimicking the Lascoux-Sch\"utzenberger type A combinatorial procedure, left and right keys for a Kashiwara-Nakashima tableau in type C. These symplectic keys have a similar role as the keys for semistandard Young tableaux. More…

Combinatorics · Mathematics 2020-04-08 João Miguel Santos

We compute, mimicking the Lascoux-Sch\"utzenberger type A combinatorial procedure, left and right keys for a Kashiwara-Nakashima tableau in type C. These symplectic keys have a similar role as the keys for semistandard Young tableaux. More…

Combinatorics · Mathematics 2021-03-24 João Miguel Santos

In the recent works of Brubaker-Bump-Friedberg, Bump-Nakasuji, and others, the product in the Casselman-Shalika formula is written as a sum over a crystal. The coefficient of each crystal element is defined using the data coming from the…

Representation Theory · Mathematics 2014-04-29 Kyu-Hwan Lee , Philip Lombardo , Ben Salisbury