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We define twisted Frobenius extensions of graded superrings. We develop equivalent definitions in terms of bimodule isomorphisms, trace maps, bilinear forms, and dual sets of generators. The motivation for our study comes from…

Rings and Algebras · Mathematics 2016-04-08 Jeffrey Pike , Alistair Savage

We categorify various finite-type cluster algebras with coefficients using completed orbit categories associated to Frobenius categories. Namely, the Frobenius categories we consider are the categories of finitely generated Gorenstein…

Representation Theory · Mathematics 2017-10-19 Alfredo Nájera Chávez

We generalize Feigin and Miwa's construction of extended vertex operator (super)algebras $A_{k}(sl(2))$ for other types of simple Lie algebras. For all the constructed extended vertex operator (super)algebras, irreducible modules are…

Quantum Algebra · Mathematics 2009-10-31 Haisheng Li

We consider algebras and Frobenius algebras, internal to a monoidal category, that are graded over a finite abelian group. For the case that A is a twisted group algebra in a linear abelian monoidal category we obtain a graded…

Quantum Algebra · Mathematics 2025-06-06 Jürgen Fuchs , Tobias Grøsfjeld

To each symmetric graded Frobenius superalgebra we associate a W-algebra. We then define a linear isomorphism between the trace of the Frobenius Heisenberg category and a central reduction of this W-algebra. We conjecture that this is an…

Representation Theory · Mathematics 2022-04-27 Michael Reeks , Alistair Savage

To any Frobenius superalgebra $A$ we associate towers of Frobenius nilCoxeter algebras and Frobenius nilHecke algebras. These act naturally, via Frobenius divided difference operators, on Frobenius polynomial algebras. When $A$ is the…

Representation Theory · Mathematics 2021-08-04 Alistair Savage , John Stuart

We develop a diagrammatic approach to the representation theory of the quantum symmetric pairs corresponding to orthosymplectic Lie superalgebras inside general linear Lie superalgebras. Our approach is based on the disoriented skein…

Quantum Algebra · Mathematics 2026-05-07 Hadi Salmasian , Alistair Savage , Yaolong Shen

We develop further the techniques presented in [M. Mombelli. On the tensor product of bimodule categories over Hopf algebras. Preprint arXiv:1111.1610 ] to study bimodule categories over the representation categories of arbitrary…

Quantum Algebra · Mathematics 2012-04-09 Martin Mombelli

We construct an action of a free resolution of the Frobenius properad on the differential forms of a closed oriented manifold. As a consequence, the forms of a manifold with values in a semi-simple Lie algebra have an additional structure…

Quantum Algebra · Mathematics 2014-04-11 Scott O. Wilson

We define and study two new classes of algebras, called higher-level affine wreath product algebras and higher-level affine Frobenius Hecke algebras. They depend on a Frobenius superalgebra and are defined, respectively, as path algebras of…

Representation Theory · Mathematics 2026-05-07 Thomas Moran

Following analogous constructions for Lie algebras, we define Whittaker modules and Whittaker categories for finite-dimensional simple Lie superalgebras. Results include a decomposition of Whittaker categories for a Lie superalgebra…

Representation Theory · Mathematics 2012-01-26 Irfan Bagci , Konstantina Christodoulopoulou , Emilie Wiesner

Effect algebras are one of the generalizations of Boolean algebras proposed in the quest for a quantum logic. Frobenius algebras are a tool of categorical quantum mechanics, used to present various families of observables in abstract, often…

Quantum Physics · Physics 2017-01-04 Dusko Pavlovic , Peter-Michael Seidel

Using the language of string diagrams, we define categorical generalizations of modules for map algebras $\mathfrak{g} \otimes A$ and equivariant map algebras $(\mathfrak{g} \otimes A)^\Gamma$, where $\mathfrak{g}$ is a Lie algebra, $A$ is…

Representation Theory · Mathematics 2025-05-01 Saima Samchuck-Schnarch

We study the action of the infinite Frobenius on the de Rham fundamental groups of affine curves defined over $\bfR$. As an application, we compute extension classes of real mixed Hodge structures associated with the motivic fundamental…

Algebraic Geometry · Mathematics 2025-07-10 Kenji Sakugawa

Let $\mathbb{k}$ be a characteristic zero domain. We define and study a diagrammatic monoidal $\mathbb{k}$-linear supercategory $\mathbf{Web}^{aff}_{A}$ associated to any locally unital Frobenius $\mathbb{k}$-superalgebra $A$. This category…

Representation Theory · Mathematics 2025-11-27 Nicholas Davidson , Jonathan R. Kujawa , Robert Muth

Firm Frobenius algebras are firm algebras and counital coalgebras such that the comultiplication is a bimodule map. They are investigated by categorical methods based on a study of adjunctions and lifted functors. Their categories of…

Rings and Algebras · Mathematics 2013-07-18 Gabriella Böhm , José Gómez-Torrecillas

We define the class of rigid Frobenius algebras in a (non-semisimple) modular category and prove that their categories of local modules are, again, modular. This generalizes previous work of A. Kirillov, Jr. and V. Ostrik [Adv. Math. 171…

Quantum Algebra · Mathematics 2025-05-21 Robert Laugwitz , Chelsea Walton

We construct a new family of irreducible modules over any basic classical affine Kac-Moody Lie superalgebra which are induced from modules over the Heisenberg subalgebra. We also obtain irreducible deformations of these modules for the…

Representation Theory · Mathematics 2022-02-10 Luan Pereira Bezerra , Lucas Calixto , Vyacheslav Futorny , Iryna Kashuba

The main result is that the category of ordinary modules of an affine vertex operator algebra of a simply laced Lie algebra at admissible level is rigid and thus a braided fusion category. If the level satisfies a certain coprime property…

Quantum Algebra · Mathematics 2018-07-03 Thomas Creutzig

We introduce a diagram category, study its structure, and investigate some of its applications to the representation theory of Lie algebras and Lie superalgebras. The morphisms of the category, which contains a subcategory isomorphic to the…

Representation Theory · Mathematics 2023-04-21 G. I. Lehrer , R. B. Zhang