Zobrazeno 1 - 10
of 1 687
pro vyhledávání: '"Leistner, P."'
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
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
Autor:
Gregor Liegl, Felix H. Fischer, Carl N. Martin, Maria Rönnefarth, Annelie Blumrich, Michael Ahmadi, Leif-Hendrik Boldt, Kai-Uwe Eckardt, Matthias Endres, Frank Edelmann, Holger Gerhardt, Ulrike Grittner, Arash Haghikia, Norbert Hübner, Ulf Landmesser, David Leistner, Knut Mai, Jil Kollmus-Heege, Dominik N. Müller, Christian H. Nolte, Sophie K. Piper, Kai M. Schmidt-Ott, Tobias Pischon, Simrit Rattan, Ira Rohrpasser-Napierkowski, Katharina Schönrath, Jeanette Schulz-Menger, Oliver Schweizerhof, Joachim Spranger, Joachim E. Weber, Martin Witzenrath, Sein Schmidt, Matthias Rose
Publikováno v:
Health and Quality of Life Outcomes, Vol 22, Iss 1, Pp 1-12 (2024)
Abstract Background Health-related quality of life (HRQL) has become an important outcome parameter in cardiology. The MOS 36-ltem Short-Form Health Survey (SF-36) and the PROMIS-29 are two widely used generic measures providing composite HRQL scores
Externí odkaz:
https://doaj.org/article/e16e431aec684125985e3087cdefce6b
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
For semi-Riemannian manifolds of constant sectional curvature, the Calabi operator is a second order linear differential operator that provides local integrability conditions for the range of the Killing operator. In this article, extending earlier r
Externí odkaz:
http://arxiv.org/abs/2302.04480
Autor:
Halpern-Leistner, Daniel
This note aims to clarify the deep relationship between birational modifications of a variety and semiorthogonal decompositions of its derived category of coherent sheaves. The result is a conjecture on the existence and properties of canonical semio
Externí odkaz:
http://arxiv.org/abs/2301.13168
Autor:
Leistner, Thomas, Munn, Thomas
We show that a compact Lorentzian locally symmetric space is geodesically complete if the Lorentzian factor in the local de Rham-Wu decomposition is of Cahen-Wallach type or if the maximal flat factor is one-dimensional and time-like. Our proof uses
Externí odkaz:
http://arxiv.org/abs/2211.02380