Zobrazeno 1 - 10
of 5 479
pro vyhledávání: '"A. Leistner"'
Autor:
Halpern-Leistner, Daniel
In this expository note, we discuss some results of the author on the structure of derived categories of equivariant coherent sheaves and the derived categories of geometric invariant theory quotients. We take a recent perspective, emphasizing the th
Externí odkaz:
http://arxiv.org/abs/2410.10979
We resolve an open problem posed by Alexeev-Knutson on the projectivity of the moduli of branchvarieties in the equidimensional case. As an application, we construct projective moduli spaces of reduced equidimensional varieties equipped with ample li
Externí odkaz:
http://arxiv.org/abs/2410.10753
We address the problem of how to characterise when a rank-two conformal Killing tensor is the trace-free part of a Killing tensor for a metric in the conformal class. We call such a metric a Killing scale. Our approach is via differential prolongatio
Externí odkaz:
http://arxiv.org/abs/2406.17212
Autor:
Greenwood, Steven, Leistner, Thomas
For a Lorentzian homogeneous space, we study how algebraic conditions on the isotropy group affect the geometry and curvature of the homogeneous space. More specifically, we prove that a Lorentzian locally homogeneous space is locally isometric to a
Externí odkaz:
http://arxiv.org/abs/2404.17470
We develop a framework relating semiorthogonal decompositions of a triangulated category $\mathcal{C}$ to paths in its space of stability conditions. We prove that when $\mathcal{C}$ is the homotopy category of a smooth and proper idempotent complete
Externí odkaz:
http://arxiv.org/abs/2401.00600
Autor:
Costanza, Federico, Leistner, Thomas
Hano's theorem states that the space of Killing vector fields of a complete simply connected Riemannian manifold is isomorphic to the direct sum of the Killing vector fields of the factors in its de Rham decomposition. We prove a generalisation of th
Externí odkaz:
http://arxiv.org/abs/2312.00569
Autor:
Cortés, Vicente, Leistner, Thomas
Publikováno v:
SIGMA 20 (2024), 084, 12 pages
A conformal transformation of a semi-Riemannian manifold is essential if there is no conformally equivalent metric for which it is an isometry. For Riemannian manifolds the existence of an essential conformal transformation forces the manifold to be
Externí odkaz:
http://arxiv.org/abs/2309.11184
For a reductive group $G$, Harder-Narasimhan theory gives a structure theorem for principal $G$ bundles on a smooth projective curve $C$. A bundle is either semistable, or it admits a canonical parabolic reduction whose associated Levi bundle is semi
Externí odkaz:
http://arxiv.org/abs/2305.09632
Autor:
Luisa A. Denkel, Andreas Voss, Elisabetta Caselli, Stephanie J. Dancer, Rasmus Leistner, Petra Gastmeier, Andreas F. Widmer
Publikováno v:
Antimicrobial Resistance and Infection Control, Vol 13, Iss 1, Pp 1-13 (2024)
Abstract Background The environment of healthcare institutions plays a major role in the transmission of multidrug resistant organisms (MDRO) and likely in subsequent healthcare-associated infections (HAIs). Probiotic cleaning products are a novel op
Externí odkaz:
https://doaj.org/article/5ae24f4fa6794581bc3cc1ccc1e364ad
Autor:
Antonia Genath, Carolin Hackmann, Luisa Denkel, Anna Weber, Friederike Maechler, Axel Kola, Stefan Schwarz, Petra Gastmeier, Rasmus Leistner
Publikováno v:
Antimicrobial Resistance and Infection Control, Vol 13, Iss 1, Pp 1-13 (2024)
Abstract Introduction The global increase of multidrug-resistant organisms (MDROs) is one of the most urgent public health threats affecting both humans and animals. The One Health concept emphasizes the interconnectedness of human, animal and enviro
Externí odkaz:
https://doaj.org/article/b836588d625c40c7a298a389f2ff25a9