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Horizontal endomorphisms, almost complex structures, vertical, horizontal and complete lifts on prolongation of a Lie algebroid are considered. Then using exact sequences, semisprays are constructed. Moreover, important geometrical objects…

Differential Geometry · Mathematics 2013-10-29 Esmaeil Peyghan

In the literature different concepts of compatibility between a projective structure and a conformal structure on a differentiable manifold are used. In particular compatibility in the sense of Weyl geometry is slightly more general than…

Differential Geometry · Mathematics 2020-07-31 Vladimir S. Matveev , Erhard Scholz

We study linear versions of Reedy categories in relation with finite dimensional algebras and abelian model structures. We prove that, for a linear Reedy category $\mathcal{C}$ over a field, the category of left $\mathcal{C}$--modules…

Representation Theory · Mathematics 2025-09-23 Georgios Dalezios , Jan Stovicek

Let $G$ be a complex reductive group. The spherical Hecke category of $G$ can be presented as the category of $G_{\mathcal O}$-equivariant constructible sheaves on the affine Grassmannian $\mathrm{Gr}_G$. This category admits a convolution…

Algebraic Geometry · Mathematics 2025-05-22 Guglielmo Nocera

Using methods of stable homotopy theory, the category of symmetric quasi-coherent sheaves associated with non-commutative graded algebras with extra symmetries is introduced and studied in this paper. It is shown to be a closed symmetric…

Algebraic Geometry · Mathematics 2025-07-04 Grigory Garkusha

We revisit the gauge symmetry related to integrable projective transformations in metric-affine formalism, identifying the gauge field of the Weyl (conformal) symmetry as a dynamical component of the affine connection. In particular, we…

High Energy Physics - Theory · Physics 2022-10-26 Gonzalo J. Olmo , Emanuele Orazi , Gianfranco Pradisi

In this paper, we study homological dimensions of algebras linked by recollements of derived module categories, and establish a series of new upper bounds and relationships among their finitistic or global dimensions. This is closely…

Rings and Algebras · Mathematics 2018-05-01 Hongxing Chen , Changchang Xi

We present a uniform theory of constructible sheaves on arbitrary schemes with coefficients in topological or even condensed rings. This is accomplished by defining lisse sheaves to be the dualizable objects in the derived infinity-category…

Algebraic Geometry · Mathematics 2023-05-30 Tamir Hemo , Timo Richarz , Jakob Scholbach

We study the cluster category of a canonical algebra A in terms of the hereditary category of coherent sheaves over the corresponding weighted projective line X. As an application we determine the automorphism group of the cluster category…

Representation Theory · Mathematics 2020-09-28 Michael Barot , Dirk Kussin , Helmut Lenzing

Here we construct spaces of coinvariants for Heisenberg vertex algebras on abelian varieties and show that these globalize to twisted $\mathscr{D}$-modules on the moduli space of abelian varieties. Remarkably, we recover the standard…

Algebraic Geometry · Mathematics 2026-04-02 Nicola Tarasca

In the first part of the paper Beilinson's theorem on the bounded derived category of coherent sheaves on P^n is extended to weighted projective spaces in a rather explicit form. To this purpose the usual category of coherent sheaves is…

Algebraic Geometry · Mathematics 2007-05-23 Alberto Canonaco

We identify additional structure on a conservative lax monoidal functor from a closed monoidal category $\mathcal{C}$ to a Grothendieck-Verdier category $\mathcal{D}$, such that the Grothendieck-Verdier structure of $\mathcal{D}$ lifts to…

Category Theory · Mathematics 2026-01-22 Max Demirdilek

We study the continuity and compactness of embeddings for radial Besov and Triebel-Lizorkin spaces with weights in the Muckenhoupt class $A_\infty$. The main tool is a discretization in terms of an almost orthogonal wavelet expansion…

Classical Analysis and ODEs · Mathematics 2015-04-07 Pablo L. De Nápoli , Irene Drelichman , Nicolas Saintier

This is an application of the theory of tilting objects to the geometric setting of perverse sheaves. We show that this theory is a natural framework for Beilinson's gluing of perverse sheaves construction. In the special case of Schubert…

Representation Theory · Mathematics 2007-05-23 A. Beilinson , R. Bezrukavnikov , I. Mirkovic

Let $\mathbb{X}$ be a weighted projective line and $\operatorname{coh}\mathbb{X}$ the associated categoy of coherent sheaves. We classify the tilting complexes $T$ in $D^b(\operatorname{coh}\mathbb{X})$ such that $\tau^2 T\cong T$, where…

Representation Theory · Mathematics 2017-06-15 Gustavo Jasso

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

Let $\mathcal{M}$ be an abelian model category (in the sense of Hovey). For a large class of quivers, we describe associated abelian model structures on categories of quiver representations with values in $\mathcal{M}$. This is based on…

Rings and Algebras · Mathematics 2018-10-31 Georgios Dalezios

We give a simple proof for the rigidity of a complex in the bounded derived category of sheaves with constructible cohomology on an abelian variety.

Algebraic Geometry · Mathematics 2011-11-28 R. Weissauer

Let T be a tilting object in a triangulated category equivalent to the bounded derived category of a hereditary abelian category with finite dimensional homomorphism spaces and split idempotents. This text investigates the strong global…

Representation Theory · Mathematics 2017-03-17 Edson Ribeiro Alvares , Patrick Le Meur , Eduardo N. Marcos

(Makes a Gamma-acylic coherent resolution of a coherent sheaf on a projection scheme.)

alg-geom · Mathematics 2008-02-03 George R. Kempf
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