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We develop a theory of two-parameter quantum polynomial functors. Similar to how (strict) polynomial functors give a new interpretation of polynomial representations of the general linear groups $\operatorname{GL}_n$, the two-parameter…

Representation Theory · Mathematics 2020-01-24 Valentin Buciumas , Hankyung Ko

We define a new category of quantum polynomial functors extending the quantum polynomials introduced by Hong and Yacobi. We show that our category has many properties of the category of Hong and Yacobi and is the natural setting in which…

Representation Theory · Mathematics 2018-07-16 Valentin Buciumas , Hankyung Ko

We use category theory to propose a unified approach to the Schur-Weyl dualities involving the general linear Lie algebras, their polynomial extensions and associated quantum deformations. We define multiplicative sequences of algebras…

Representation Theory · Mathematics 2011-05-13 Alexei Davydov , Alexander Molev

We introduce the quantum multi-Schur functions, quantum factorial Schur functions and quantum Macdonald polynomials. We prove that for restricted vexillary permutations the quantum double Schubert polynomial coincides with some quantum…

q-alg · Mathematics 2008-02-03 Anatol N. Kirillov

In this paper, we study the Littlewood theory associated with the quantum super immanants and supersymmetric polynomials, including both the super case and the quantum generalization. In the setting of quantum super Schur-Weyl duality…

Quantum Algebra · Mathematics 2026-04-23 Naihuan Jing , Yinlong Liu , Jian Zhang

We develop a $\mathtt{q}$-analogue of the theory of conjugation equivariant $\mathcal D$-modules on a complex reductive group $G$. In particular, we define quantum Hotta-Kashiwara modules and compute their endomorphism algebras. We use the…

Representation Theory · Mathematics 2023-09-07 Sam Gunningham , David Jordan , Monica Vazirani

We introduce the notion of numerical functors to generalise Eilenberg & MacLane's polynomial functors to modules over a binomial base ring. After shewing how these functors are encoded by modules over a certain ring, we record a precise…

Representation Theory · Mathematics 2015-09-24 Qimh Richey Xantcha

We categorify various Fock space representations on the algebra of symmetric functions via the category of polynomial functors. In a prequel, we used polynomial functors to categorify the Fock space representations of type A affine Lie…

Representation Theory · Mathematics 2015-04-07 Jiuzu Hong , Oded Yacobi

The purpose of this this paper is to generalize the functors arising from the theory of Witt vectors duto to Cartier. Given a polynomial $g(q)\in \mathbb Z[q]$, we construct a functor ${\overline {W}}^{g(q)}$ from the category of $\mathbb…

Rings and Algebras · Mathematics 2015-03-26 Young-Tak Oh

Covariant first order differential calculus over quantum complex Grassmann manifolds is considered. It is shown by a Pusz-Woronowicz type argument that under restriction to calculi close to classical Kaehler differentials there exist…

Quantum Algebra · Mathematics 2016-09-07 Stefan Kolb

We formulate and classify super Satake diagrams under a mild assumption, building on arbitrary Dynkin diagrams for finite-dimensional basic Lie superalgebras. We develop a theory of quantum supersymmetric pairs associated to the super…

Quantum Algebra · Mathematics 2025-08-25 Yaolong Shen , Weiqiang Wang

Highest weight categories are described in terms of standard objects and recollements of abelian categories, working over an arbitrary commutative base ring. Then the highest weight structure for categories of strict polynomial functors is…

Representation Theory · Mathematics 2015-12-23 Henning Krause

The theory of Schur functors provides a powerful and elegant approach to the representation theory of GL_n - at least to the so-called polynomial representations - especially to questions about how the theory varies with n. We develop…

Representation Theory · Mathematics 2020-11-13 Steven V Sam , Andrew Snowden

We build an explicit link between coherent functors in the sense of Auslander and strict polynomial functors in the sense of Friedlander and Suslin. Applications to functor cohomology are discussed.

Representation Theory · Mathematics 2008-05-19 Vincent Franjou , Teimuraz Pirashvili

We find presentations by generators and relations for the equivariant quantum cohomology of the Grassmannian. For these presentations, we also find determinantal formulae for the equivariant quantum Schubert classes. To prove this, we use…

Combinatorics · Mathematics 2007-05-23 Leonardo Constantin Mihalcea

We introduce a class of Schur type functions associated with polynomial sequences of binomial type. This can be regarded as a generalization of the ordinary Schur functions and the factorial Schur functions. This generalization satisfies…

Representation Theory · Mathematics 2008-11-04 Minoru Itoh

We give formulas for the products of classes of Schubert varieties in the quantum cohomology rings of Grassmannians, in terms of the combinatorics of partitions and tableaux.

alg-geom · Mathematics 2008-02-03 Aaron Bertram , Ionut Ciocan-Fontanine , William Fulton

Let $\mathfrak{g}$ be a complex simple Lie algebra and $U_qL\mathfrak{g}$ the corresponding quantum affine algebra. We construct a functor ${}^{\theta}{\sf F}$ between finite-dimensional modules over a quantum symmetric pair of affine type…

Representation Theory · Mathematics 2023-11-17 Andrea Appel , Tomasz Przezdziecki

We develop a general classification theory for Brumer's dihedral quintic polynomials by means of Kummer theory arising from certain elliptic curves. We also give a similar theory for cubic polynomials.

Number Theory · Mathematics 2008-02-04 Masanari Kida , Yuichi Rikuna , Atsushi Sato

We explicate relations among the Gelfand--Graev modules for central covers, the Euler--Poincar\'e polynomial of the Arnold--Brieskorn manifold, and the quantum affine Schur--Weyl duality. These three objects and their relations are dictated…

Number Theory · Mathematics 2023-04-06 Fan Gao , Nadya Gurevich , Edmund Karasiewicz
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