Results 1 to 10 of about 931 (51)

Completions of discrete cluster categories of type A

Transactions of the London Mathematical Society, 2021
We complete the discrete cluster categories of type A as defined by Igusa and Todorov, by embedding such a discrete cluster category inside a larger one, and then taking a certain Verdier quotient.
Charles Paquette, Emine Yıldırım
doaj   +1 more source

Existence of Richardson elements for seaweed Lie algebras of finite type

Journal of the London Mathematical Society, Volume 101, Issue 2, Page 505-529, April 2020., 2020
Abstract Seaweed Lie algebras are a natural generalisation of parabolic subalgebras of reductive Lie algebras. A well‐known theorem of Richardson says that the adjoint action of a parabolic group has a dense open orbit in the nilpotent radical of its Lie algebra (Richardson, Bull. Lond. Math. Soc. 6 (1974) 21–24.). Elements in the open orbit are called
Bernt Tore Jensen, Xiuping Su
wiley   +1 more source

Insensitivity to Time-Reversal Symmetry Breaking of Universal Conductance Fluctuations with Andreev Reflection [PDF]

, 1995
Numerical simulations of conduction through a disordered microbridge between a normal metal and a superconductor have revealed an anomalous insensitivity of the conductance fluctuations to a magnetic field.
A. D. Stone, A. F. Andreev, B. L. Al'tshuler, C. W. J. Beenakker, C. W. J. Beenakker, C. W. J. Beenakker, C. W. J. Beenakker, C. W. J. Beenakker, C. W. J. Beenakker, C. W. J. Beenakker, D. L. Maslov, F. J. Dyson, H. U. Baranger, I. K. Marmorkos, J. T. Chalker, K. A. Muttalib, L. K. Hua, M. Creutz, P. A. Lee, P. A. Mello, P. A. Mello, P. A. Mello, P. W. Brouwer, P. W. Brouwer, R. A. Jalabert, Y. Imry, Y. Takane, Y. Takane   +27 more
core   +3 more sources

Representation type via Euler characteristics and singularities of quiver Grassmannians

Bulletin of the London Mathematical Society, Volume 51, Issue 5, Page 815-835, October 2019., 2019
Abstract In this paper, we characterize the representation type of an acyclic quiver by the properties of its associated quiver Grassmannians. This characterization utilizes and extends known results about singular quiver Grassmannians and cell decompositions into affine spaces.
Oliver Lorscheid, Thorsten Weist
wiley   +1 more source

Regular orbit closures in module varieties [PDF]

, 2006
Let A be a finitely generated associative algebra over an algebraically closed field. We characterize the finite dimensional modules over A whose orbit closures are regular varieties.Comment: 11 ...
Loc, Nguyen Quang, Zwara, Grzegorz
core   +3 more sources

Flat covers of representations of the quiver A∞

International Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 70, Page 4409-4419, 2003., 2003
Rooted quivers are quivers that do not contain A∞ ≡ ⋯→•→• as a subquiver. The existence of flat covers and cotorsion envelopes for representations of these quivers have been studied by Enochs et al. The main goal of this paper is to prove that flat covers and cotorsion envelopes exist for representations of A∞.
E. Enochs, S. Estrada, J. R. García Rozas, L. Oyonarte   +3 more
wiley   +1 more source

On finite dimensional Jacobian Algebras [PDF]

, 2015
We show that Jacobian algebras arising from a sphere with $n$-punctures, with $n\geq5$, are finite dimensional algebras. We consider also a family of cyclically oriented quivers and we prove that, for any primitive potential, the associated Jacobian ...
Trepode, Sonia, Valdivieso-Diaz, Yadira
core   +3 more sources

Lattice structure of torsion classes for path algebras [PDF]

, 2015
We consider module categories of path algebras of connected acyclic quivers. It is shown in this paper that the set of functorially finite torsion classes form a lattice if and only if the quiver is either Dynkin quiver of type A, D, E, or the quiver has
Iyama, Osamu, Reiten, Idun, Thomas, Hugh, Todorov, Gordana   +3 more
core   +2 more sources

Combinatorial aspects of extensions of Kronecker modules [PDF]

, 2014
Let kK be the path algebra of the Kronecker quiver and consider the category of finite dimensional right modules over kK (called Kronecker modules). We prove that extensions of Kronecker modules are field independent up to Segre classes, so they can be ...
Szántó, Csaba
core   +1 more source

Supersymmetric AdS_4 black holes and attractors

, 2009
Using the general recipe given in arXiv:0804.0009, where all timelike supersymmetric solutions of N=2, D=4 gauged supergravity coupled to abelian vector multiplets were classified, we construct the first examples of genuine supersymmetric black holes in ...
A Ceresole, A Dabholkar, A Dabholkar, A Strominger, A Strominger, Dietmar Klemm, DM Kaplan, GT Horowitz, JF Morales, L Andrianopoli, M Cvetič, M Huebscher, MJ Duff, MM Caldarelli, O Aharony, R Emparan, S Bellucci, S Ferrara, S Ferrara, S Ferrara, S Ferrara, S Ferrara, Sergio L. Cacciatori, SL Cacciatori, SL Cacciatori, WA Sabra   +25 more
core   +1 more source