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In this paper we study the localization of a derived category of a graded gentle algebra by a subcategory generated by a spherical band object. This object corresponds to a simple closed curve under the equivalence between the perfect…

Representation Theory · Mathematics 2025-01-27 Pierre Bodin

We customize the existing models for the bounded derived category of gentle algebras to obtain simple graph theoretic tools to analyze indecomposable objects, Auslander-Reiten triangles, and their interaction with the associated homological…

Representation Theory · Mathematics 2025-02-05 Jesús Arturo Jiménez González , Andrzej Mróz

Following the approach of Haiden-Katzarkov-Kontsevich arXiv:1409.8611, to any homologically smooth graded gentle algebra $A$ we associate a triple $(\Sigma_A, \Lambda_A; \eta_A)$, where $\Sigma_A$ is an oriented smooth surface with…

Symplectic Geometry · Mathematics 2019-08-28 Yanki Lekili , Alexander Polishchuk

Combining results from Keller and Buchweitz, we describe the 1-periodic derived category of a finite dimensional algebra $A$ of finite global dimension as the stable category of maximal Cohen-Macaulay modules over some Gorenstein algebra…

Representation Theory · Mathematics 2025-06-25 Joseph Winspeare

We give a geometric model for any algebraic heart in the derived category of a gentle algebra, which is equivalent to the module category of some gentle algebra. To do this, we deform the geometric model for the module category of a gentle…

Representation Theory · Mathematics 2024-09-06 Wen Chang

We study triangulated categories which can be modeled by an oriented marked surface $\mathcal{S}$ and a line field $\eta$ on $\mathcal{S}$. This includes bounded derived categories of gentle algebras and -- conjecturally -- all partially…

Representation Theory · Mathematics 2019-04-11 Sebastian Opper

The geometric models for the module category and derived category of any gentle algebra were introduced to realize the objects in module category and derived category by permissible curves and admissible curves respectively. The present…

Representation Theory · Mathematics 2023-08-15 Yu-Zhe Liu , Chao Zhang , Houjun Zhang

In this article, gentle algebras are realised as tiling algebras, which are associated to partial triangulations of unpunctured surfaces with marked points on the boundary. This notion of tiling algebras generalise the notion of Jacobian…

Representation Theory · Mathematics 2018-03-16 Karin Baur , Raquel Coelho Simoes

In this paper, we investigate properties of the bounded derived category of finite dimensional modules over a gentle or skew-gentle algebra. We show that the Rouquier dimension of the derived category of such an algebra is at most one.…

Representation Theory · Mathematics 2017-06-27 Igor Burban , Yuriy Drozd

In this article we describe the triangulated structure of the bounded derived category of a gentle algebra by describing the triangles induced by the morphisms between indecomposable objects in a basis of their Hom-space.

Representation Theory · Mathematics 2020-01-27 Ilke Canakci , David Pauksztello , Sibylle Schroll

We study thick subcategories of derived categories of gentle algebras. Any thick subcategory of a derived category of a gentle algebra is generated by a set of string objects or a set of band objects. We show the thick subcategories…

Representation Theory · Mathematics 2025-02-18 Callum Page

We confirm a conjecture by Lekili and Polishchuk that the geometric invariants which they construct for homologically smooth graded (not necessarily proper) gentle algebras form a complete derived invariant. Hence, we obtain a complete…

Representation Theory · Mathematics 2025-03-21 Haibo Jin , Sibylle Schroll , Zhengfang Wang

We study semiorthogonal decompositions of bounded derived categories of gentle algebras and how they are manifested in the geometric model of these categories as constructed by Opper, Plamondon and Schroll. We prove that there is a…

Representation Theory · Mathematics 2022-09-30 Jakub Kopřiva , Jan Šťovíček

We introduce a new class of finite dimensional gentle algebras, the surface algebras, which are constructed from an unpunctured Riemann surface with boundary and marked points by introducing cuts in internal triangles of an arbitrary…

Representation Theory · Mathematics 2011-04-05 Lucas David-Roesler , Ralf Schiffler

We determine some of the derived equivalences of a class of gentle algebras called surface algebras. These algebras are constructed from an unpunctured Riemann surface of genus 0 with boundary and marked points by introducing cuts in…

Representation Theory · Mathematics 2012-06-13 Lucas David-Roesler

We consider a class of relative $n$-Calabi--Yau dg-algebras, referred to as relative Ginzburg algebras, associated with marked surfaces equipped with a decomposition into $n$-gons ($n$-angulation). We relate their derived categories to the…

Representation Theory · Mathematics 2023-07-24 Merlin Christ

Gentle algebras are in bijection with admissible dissections of marked oriented surfaces. In this paper, we further study the properties of admissible dissections and we show that silting objects for gentle algebras are given by admissible…

Representation Theory · Mathematics 2019-04-12 Claire Amiot , Pierre-Guy Plamondon , Sibylle Schroll

In this article, we realize skew-gentle algebras as skew-tiling algebras associated to admissible partial triangulations of punctured marked surfaces. Based on this, we establish a bijection between tagged permissible curves and certain…

Representation Theory · Mathematics 2023-04-05 Ping He , Yu Zhou , Bin Zhu

Skew-gentle algebras are a generalisation of the well-known class of gentle algebras with which they share many common properties. In this work, using non-commutative Gr\"obner basis theory, we show that these algebras are Koszul and that…

Representation Theory · Mathematics 2021-11-18 Daniel Labardini-Fragoso , Sibylle Schroll , Yadira Valdivieso

This paper is the first part of a series that intends to study the resolving subcategories for gentle algebras over an algebraically closed field $\mathbb{K}$. In a general setting, we improve the precision of an algorithm from Takahashi…

Representation Theory · Mathematics 2025-10-06 Benjamin Dequêne , Michaël Schoonheere
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