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To every finite-dimensional $\mathbb C$-algebra $\Lambda$ of finite representation type we associate an affine variety. These varieties are a large generalization of the varieties defined by "$u$ variables" satisfying "$u$-equations", first…

Representation Theory · Mathematics 2026-01-01 Nima Arkani-Hamed , Hadleigh Frost , Pierre-Guy Plamondon , Giulio Salvatori , Hugh Thomas

We study the rational Cherednik algebra $H_{t,c}(S_3,\h)$ of type $A_2$ in positive characteristic $p$, and its irreducible category $\mathcal{O}$ representations $L_{t,c}(\tau)$. For every possible value of $p,t,c$, and $\tau$ we calculate…

Representation Theory · Mathematics 2023-07-14 Martina Balagovic , Jordan Barnes

We study a class of representations called ``calibrated representations'' of the degenerate double affine Hecke algebra and those of the rational Cherednik algebra of type ${\mathrm{GL}}_n$. We give a realization of calibrated irreducible…

Quantum Algebra · Mathematics 2007-05-23 Takeshi Suzuki

This is a survey paper about affine Hecke algebras. We start from scratch and discuss some algebraic aspects of their representation theory, referring to the literature for proofs. We aim in particular at the classification of irreducible…

Representation Theory · Mathematics 2023-09-12 Maarten Solleveld

We study unitarity of lowest weight irreducible representations of rational Cherednik algebras. We prove several general results, and use them to determine which lowest weight representations are unitary in a number of cases. In particular,…

Representation Theory · Mathematics 2009-03-20 Pavel Etingof , Emanuel Stoica , Stephen Griffeth

We provide an algorithmic description of a family of graded decomposition numbers for rational Cherednik algebras.

Representation Theory · Mathematics 2017-05-09 C. Bowman , A. G. Cox , L. Speyer

We study maximal subalgebras of an arbitrary finite dimensional algebra over a field, and obtain full classification/description results of such algebras. This is done by first obtaining a complete classification in the semisimple case, and…

Rings and Algebras · Mathematics 2017-08-31 Miodrag Iovanov , Alexander Sistko

We classify the irreducible finite-dimensional representations of the twisted quantum affine algebras.

q-alg · Mathematics 2008-02-03 Vyjayanthi Chari , Andrew Pressley

In this paper, we classify the irreducible representations of the trigonometric Cherednik algebras of rank 1 in characteristic p > 0. There are two cases. One is the "quantum" case, where "Planck's constant" is nonzero and generic…

Representation Theory · Mathematics 2007-05-23 Frédéric Latour

We extend the family of classical Schur algebras in type A, which determine the polynomial representation theory of general linear groups over an infinite field, to a larger family, the rational Schur algebras, which determine the rational…

Representation Theory · Mathematics 2007-11-17 Richard Dipper , Stephen Doty

We introduce and study an affine analogue of skew Young diagrams and tableaux on them. It turns out that the double affine Hecke algebra of type $A$ acts on the space spanned by standard tableaux on each diagram. It is shown that the…

Quantum Algebra · Mathematics 2007-05-23 Takeshi Suzuki , Monica Vazirani

Let k be a field. A finite dimensional k-algebra is said to be minimal representation-infinite provided it is representation-infinite and all its proper factor algebras are representation-finite. Our aim is to classify the special biserial…

Representation Theory · Mathematics 2011-02-22 Claus Michael Ringel

We investigate the representation theory of the rational and trigonometric Cherednik algebra of type $GL_n$ by means of combinatorics on periodic (or cylindrical) skew diagrams. We introduce and study standard tableaux and plane partitions…

Representation Theory · Mathematics 2007-05-23 Takeshi Suzuki

We study finite-dimensional representations of hyper loop algebras over non-algebraically closed fields. The main results concern the classification of the irreducible representations, the construction of the Weyl modules, base change,…

Representation Theory · Mathematics 2012-01-04 Dijana Jakelic , Adriano Moura

In this article we study rational Cherednik algebras at $t = 1$ in positive characteristic. We study a finite dimensional quotient of the rational Cherednik algebra called the restricted rational Cherednik algebra. When the corresponding…

Rings and Algebras · Mathematics 2011-12-19 Gwyn Bellamy , Maurizio Martino

We consider irreducible lowest-weight representations of Cherednik algebras associated to certain classes of complex reflection groups in characteristic p. In particular, we study maximal graded submodules of Verma modules associated to…

Representation Theory · Mathematics 2014-07-17 Carl Lian

We classify the finite dimensional irreducible representations with integral central character of finite $W$-algebras $U(\mathfrak g,e)$ associated to standard Levi nilpotent orbits in classical Lie algebras of types B and C. This…

Representation Theory · Mathematics 2016-01-20 Jonathan Brown , Simon M. Goodwin

Finite versions of W-algebras are introduced by considering (symplectic) reductions of finite dimensional simple Lie algebras. In particular a finite analogue of $W^{(2)}_3$ is introduced and studied in detail. Its unitary and non-unitary,…

High Energy Physics - Theory · Physics 2009-10-22 T. Tjin

In this paper, we classify the finite dimensional irreducible modules for affine BMW algebra over an algebraically closed field with arbitrary characteristic.

Quantum Algebra · Mathematics 2012-06-19 Hebing Rui

In this paper we describe the characters of irreducible objects in category O for the rational Cherednik algebra associated to GL_2(F_p) over an algebraically closed field of positive characteristic p, for any value of the parameter t and…

Representation Theory · Mathematics 2021-02-26 Martina Balagovic , Harrison Chen