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Let $K$ be a field, $Q$ a quiver, and $\mathcal{A}$ the ideal of the path algebra $KQ$ that is generated by the arrows of $Q$. We present old and new results about the representation theories of the truncations $KQ/\mathcal{A}^L$, $L \in…

Representation Theory · Mathematics 2024-12-18 K. R. Goodearl , B. Huisgen-Zimmermann

This article provides an overview of the techniques related to classification of spherical and more general objects within triangulated categories, and its relationship with algebraic geometry, representation theory and symplectic geometry.…

Algebraic Geometry · Mathematics 2026-01-27 Wahei Hara , Michael Wemyss

This is a survey written in an expositional style on the topic of symplectic singularities and symplectic resolutions, which could also serve as an introduction to this subject.

Algebraic Geometry · Mathematics 2007-05-23 Baohua Fu

We construct representations of a q-oscillator algebra by operators on Fock space on positive matrices. They emerge from a multiresolution scaling construction used in wavelet analysis. The representations of the Cuntz Algebra arising from…

Functional Analysis · Mathematics 2007-05-23 Palle E. T. Jorgensen , Anna Paolucci

In this paper we identify the cotangent to the derived stack of representations of a quiver $Q$ with the derived moduli stack of modules over the Ginzburg dg-algebra associated with $Q$. More generally, we extend this result to finite type…

Representation Theory · Mathematics 2024-04-04 Tristan Bozec , Damien Calaque , Sarah Scherotzke

We develop new techniques for the construction and classification of representations of row-finite and locally convex higher-rank graph C*-algebras O. This class includes Cuntz--Krieger algebras associated to row-finite directed graphs. Our…

Operator Algebras · Mathematics 2026-04-20 Arnaud Brothier , Aidan Sims , Dilshan Wijesena

Generalizing the dihedral picture for G(M,M,2), we construct Hecke algebras (and present a strategy for constructing Hecke categories) and asymptotic counterparts. We think of these as associated with the complex reflection group G(M,M,N).

Representation Theory · Mathematics 2026-04-28 Abel Lacabanne , Daniel Tubbenhauer , Pedro Vaz

This paper reports some advances in the study of the symplectic blob algebra. We find a presentation for this algebra. We find a minimal poset for this as a quasi-hereditary algebra. We discuss how to reduce the number of parameters…

Representation Theory · Mathematics 2008-07-28 R. M. Green , P. P. Martin , A. E. Parker

We describe the main algebraic and geometric properties of the class of algebras introduced in [arXiv:0705.1629]. We discuss their origins in symplectic geometry and associative algebra, and the notions of cohomology and representations. We…

Mathematical Physics · Physics 2008-12-18 Valentin Ovsienko

We review the theory of quiver bundles over a K\"ahler manifold, and then introduce the concept of generalized quiver bundles for an arbitrary reductive group G. We first study the case when G=O(V) or Sp(V), interpreting them as orthogonal…

Algebraic Geometry · Mathematics 2015-08-04 Artue de Araujo

A general overview of the existing difference ring theory for symbolic summation is given. Special emphasis is put on the user interface: the translation and back translation of the corresponding representations within the term algebra and…

Symbolic Computation · Computer Science 2021-05-04 Carsten Schneider

We survey some results on counting the rational points of moduli spaces of quiver representations. We then make generalizations to Grassmannians and flags of quiver representations. These results have nice applications to the cluster…

Quantum Algebra · Mathematics 2012-09-25 Jiarui Fei

Using diagrammatic methods, we define a quiver algebra depending on a prime p and show that it is the algebra underlying the category of tilting modules for SL(2) in characteristic p. Along the way we obtain a presentation for morphisms…

Representation Theory · Mathematics 2021-06-01 Daniel Tubbenhauer , Paul Wedrich

We investigate a family of representations of Gale-Robinson quivers that are geared towards providing concrete information about the corresponding cluster algebras. In this way, we provide a representation theoretic explanation for known…

Combinatorics · Mathematics 2017-10-27 Max Glick , Jerzy Weyman

We use evaluation representations to give a complete classification of the finite-dimensional simple modules of twisted current algebras. This generalizes and unifies recent work on multiloop algebras, current algebras, equivariant map…

Representation Theory · Mathematics 2013-08-21 Michael Lau

These three topics are an attempt to explicate some curiosities of the inverse problem of representation theory (i.e. having a set of operators to describe the "correct" algebraic object, which is represented by them) on simple examples…

High Energy Physics - Theory · Physics 2008-02-03 Denis Juriev

It is well known that related with the irreducible representations of the Lie group $SO(2)$ we find a discrete basis as well a continuous one. In this paper we revisited this situation under the light of Rigged Hilbert spaces, which are the…

Mathematical Physics · Physics 2017-11-13 Enrico Celeghini , Manuel Gadella , Mariano A del Olmo

We examine super symmetric representations of the B-type Hecke algebra. We exploit such representations to obtain new non-diagonal solutions of the reflection equation associated to the super algebra U_q(gl(m|n)). The boundary super algebra…

Mathematical Physics · Physics 2013-07-09 Anastasia Doikou , Nikos Karaiskos

We extend the Weil representation of infinite-dimensional symplectic group to a representation a certain category of linear relations.

Representation Theory · Mathematics 2017-03-22 Yury A. Neretin

We consider a class of C*-algebras C(X) associated with quantum spaces such as spheres, projective spaces, and lens spaces. We introduce a non-self-adjoint operator algebra A together with an explicit functor from the category of…

Operator Algebras · Mathematics 2026-05-18 Arnaud Brothier