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We establish a connection between knot theory and cluster algebras via representation theory. To every knot diagram (or link diagram), we associate a cluster algebra by constructing a quiver with potential. The rank of the cluster algebra…

Representation Theory · Mathematics 2024-05-03 Véronique Bazier-Matte , Ralf Schiffler

We provide a complete classification of the singularities of cluster algebras of finite cluster type. This extends our previous work about the case of trivial coefficients. Additionally, we classify the singularities of cluster algebras for…

Algebraic Geometry · Mathematics 2025-09-23 Angélica Benito , Eleonore Faber , Hussein Mourtada , Bernd Schober

The Hochschild and (cotriple) cyclic homologies of crossed modules of (not-necessarily-unital) associative algebras are investigated. Wodzicki's excision theorem is extended for inclusion crossed modules in the category of crossed modules…

K-Theory and Homology · Mathematics 2008-12-04 Guram Donadze , Nick Inassaridze , Emzar Khmaladze , Manuel Ladra

An isomorphism between two hermitian unitals is proved, and used to treat isomorphisms of classical groups that are related to the isomorphism between certain simple real Lie algebras of types A and D (and rank 3).

Group Theory · Mathematics 2023-04-19 Markus Johannes Stroppel

Locally finite groups having the property that every non-cyclic subgroup contains its centralizer are completely classified.

Group Theory · Mathematics 2016-06-07 Costantino Delizia , Urban Jezernik , Primoz Moravec , Chiara Nicotera , Chris Parker

Cluster automorphisms have been shown to have links to the mapping class groups of surfaces, maximal green sequences and to exchange graph automorphisms for skew-symmetric cluster algebras. In this paper we aim to generalise these results…

Combinatorics · Mathematics 2016-12-12 John W. Lawson

It is well known that the relation-extensions of tilted algebras are cluster-tilted algebras. In this paper, we extend the result to silted algebras and prove some extension of silted algebras are cluster-tilted algebras.

Representation Theory · Mathematics 2020-05-19 Hanpeng Gao

In this paper we give the derived equivalence classification of cluster-tilted algebras of type An. We show that the bounded derived category of such an algebra depends only on the number of 3-cycles in the quiver of the algebra.

Representation Theory · Mathematics 2007-11-08 Aslak Bakke Buan , Dagfinn F. Vatne

Every two seeds in a field of fractions $\mathcal{F}$ together with a symmetric group element gives rise to an automorphism of $\mathcal{F}$ called an exchange automorphism. For positive cluster algebras, we provide equivalent conditions…

Representation Theory · Mathematics 2014-04-03 Ibrahim A Saleh

We characterize the indecomposable transjective modules over an arbitrary cluster-tilted algebra that do not lie on a local slice, and we provide a sharp upper bound for the number of (isoclasses of) these modules.

Representation Theory · Mathematics 2016-06-17 Ibrahim Assem , Ralf Schiffler , Khrystyna Serhiyenko

We classify all finite dimensional algebras which are derived equivalent to m-cluster tilted algebras of type A.

Representation Theory · Mathematics 2012-01-23 Juan Carlos Bustamante , Viviana Gubitosi

We study Lie-Rinehart algebra structures in the framework provided by a duality pairing of modules over a unital commutative associative algebra. Thus, we construct examples of Lie brackets corresponding to a fixed anchor map whose image is…

Differential Geometry · Mathematics 2024-02-19 Daniel Beltita , Alina Dobrogowska , Grzegorz Jakimowicz

In this paper, we prove one case of the conjecture given by Hernandez and Leclerc\cite{HL0}. Specifically, we give a cluster algebra structure on the Grothendieck ring of a full subcategory of the finite dimensional representations of a…

Quantum Algebra · Mathematics 2015-06-19 Yan-Min Yang , Zhu-Jun Zheng

The article concerns the existence and uniqueness of quantisations of cluster algebras. We prove that cluster algebras with an initial exchange matrix of full rank admit a quantisation in the sense of Berenstein-Zelevinsky and give an…

Quantum Algebra · Mathematics 2017-09-11 Florian Gellert , Philipp Lampe

In this paper, we focus on a new lower bound quantum cluster algebra which is generated by the initial quantum cluster variables and the quantum projective cluster variables of an acyclic quantum cluster algebra with principal coefficients.…

Quantum Algebra · Mathematics 2024-10-03 Junyuan Huang , Xueqing Chen , Ming Ding , Fan Xu

We prove the equivalence of several hypotheses that have appeared recently in the literature for studying left Bousfield localization and algebras over a monad. We find conditions so that there is a model structure for local algebras, so…

Algebraic Topology · Mathematics 2021-09-01 Michael Batanin , David White

We compute the Hochschild cohomology groups of the cluster-tilted algebras of finite representation type.

Representation Theory · Mathematics 2012-05-04 Sefi Ladkani

Integral cluster categories of acyclic quivers have recently been used in the representation-theoretic approach to quantum cluster algebras. We show that over a principal ideal domain, such categories behave much better than one would…

Representation Theory · Mathematics 2011-07-13 Bernhard Keller , Sarah Scherotzke

It is proved that the generalized cluster complex defined by Fomin and Reading has a dihedral symmetry. Together with diagram symmetries, they generate its automorphism group. A consequence is a simple explicit formula for the order of this…

Combinatorics · Mathematics 2025-04-09 Matthieu Josuat-Vergès

It is known that many (upper) cluster algebras possess different kinds of good bases which contain the cluster monomials and are parametrized by the tropical points of cluster Poisson varieties. For a large class of upper cluster algebras…

Representation Theory · Mathematics 2021-07-08 Fan Qin