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We study relatively semi-stable vector bundles and their moduli on non-K\"ahler principal elliptic bundles over compact complex manifolds of arbitrary dimension. The main technical tools used are the twisted Fourier-Mukai transform and a…

Complex Variables · Mathematics 2013-10-02 Vasile Brinzanescu , Andrei D. Halanay , Günther Trautmann

We introduce the tractor formalism from conformal geometry to the study of smooth metric measure spaces. In particular, this gives rise to a correspondence between quasi-Einstein metrics and parallel sections of certain tractor bundles. We…

Differential Geometry · Mathematics 2012-07-30 Jeffrey S. Case

Using the Sasakian join construction with homology 3-spheres, we give a countably infinite number of examples of Sasakian manifolds with perfect fundamental group in all odd dimensions greater than 1. These have extremal Sasaki metrics with…

Differential Geometry · Mathematics 2013-09-30 Charles P. Boyer , Christina W. Tønnesen-Friedman

The theory of derivative of noninteger order goes back to Leibniz, Liouville and Riemann. Derivatives of fractional order have found many applications in recent studies in mechanics, physics, economics. In this paper we define the…

Differential Geometry · Mathematics 2007-09-18 Gheorghe Ivan , Mihai Ivan , Dumitru Opris

There are two different approaches to handle brane-world models brane-based or bulk-based. In the brane-based approach, the brane is chosen to be fixed on a coordinate system, whereas in the bulk-based approach, it is no longer static as it…

General Relativity and Quantum Cosmology · Physics 2012-09-17 Gülçin Uluyazi

Let A_+ be the ring of Laplace transforms of complex Borel measures on R with support in [0,+\infty) which do not have a singular nonatomic part. We compare the nu-metric d_{A_+} for stabilizable plants over A_+ given in the article by Ball…

Optimization and Control · Mathematics 2011-11-11 Rudolf Rupp , Amol Sasane

In this paper, a comprehensive study of contact and Sasakian structures on the indicatrix bundle of Finslerian warped product manifolds is reconstructed. In addition, the Kahler structure on the tangent bundle of these manifolds is studied…

Metric Geometry · Mathematics 2021-09-14 Hassan Attarchi , Morteza Mirmohammad Rezaii

We discuss a deformation of Sasakian structure in the presence of totally skew-symmetric torsion by introducing odd dimensional manifolds whose metric cones are K\"ahler with torsion. It is shown that such a geometry inherits similar…

High Energy Physics - Theory · Physics 2015-06-05 Tsuyoshi Houri , Hiroshi Takeuchi , Yukinori Yasui

This paper studies the approximation of singular Hermitian metrics on vector bundles using smooth Hermitian metrics with Nakano semi-positive curvature on Zariski open sets. We show that singular Hermitian metrics capable of this…

Complex Variables · Mathematics 2024-02-13 Takahiro Inayama , Shin-ichi Matsumura

We use the Witten index in the open string sector to determine tadpole charges of orientifold planes and D-branes. As specific examples we consider type I compactifications on Calabi Yau manifolds and noncompact orbifolds. The tadpole…

High Energy Physics - Theory · Physics 2010-11-19 Christian Romelsberger

We classify the biharmonic non-Legendre curves in a Sasakian space form for which the angle between the tangent vector field and the characteristic vector field is constant and obtain explicit examples of such curves in…

Differential Geometry · Mathematics 2009-03-27 Dorel Fetcu

We consider classical gauge theory with spontaneous symmetry breaking on a principal bundle $P\to X$ whose structure group $G$ is reducible to a closed subgroup $H$, and sections of the quotient bundle $P/H\to X$ are treated as classical…

Mathematical Physics · Physics 2015-03-16 G. Sardanashvily , A. Kurov

Several authors have recently constructed characteristic classes for classes of infinite rank vector bundles appearing in topology and physics. These include the tangent bundle to the space of maps between closed manifolds, the infinite…

K-Theory and Homology · Mathematics 2011-07-26 Andres Larrain-Hubach

It is shown that a strong system of vector fields on a fiber bundle in the sense of [Modugno, M. Systems of connections and invariant lagrangians. In: Differential geometric methods in theoretical physics, Proc. 15th Int. Conf., DGM,…

Differential Geometry · Mathematics 2016-09-06 Peter W. Michor

We present a fully analytical solution for the natural oscillation of an inviscid sessile drop of arbitrary contact angle on a horizontal plate for the case for the case of low Bond number, when surface tension dominates gravity. The…

Fluid Dynamics · Physics 2020-10-29 Saksham Sharma , D. Ian Wilson

A metric projective structure is a manifold equipped with the unparametrised geodesics of some pseudo-Riemannian metric. We make acomprehensive treatment of such structures in the case that there is a projective Weyl curvature nullity…

Differential Geometry · Mathematics 2017-11-28 A. Rod Gover , Vladimir S. Matveev

Contraction analysis establishes exponential incremental convergence of a nonlinear system by solving a linear matrix inequality for a contraction metric, and has become a standard resource for solving problems in nonlinear control and…

Dynamical Systems · Mathematics 2026-03-03 Winfried Lohmiller , Jean-Jacques Slotine

We construct complete Riemannian metrics to show that the total space of tangent bundles of orientable closed surfaces (except torus) admits complete uniformly PSC-metrics. It gives a partial positive answer to one of Gromov's question.

Differential Geometry · Mathematics 2019-11-12 Jialong Deng

Using the harmonic theory developed by Takegoshi for representation of relative cohomology and the framework of computation of curvature of direct images bundles by Berndtsson, we prove that the higher direct images by a smooth morphism of…

Algebraic Geometry · Mathematics 2018-05-24 Christophe Mourougane , Shigeharu Takayama

We establish an explicit correspondence between two--dimensional projective structures admitting a projective vector field, and a class of solutions to the $SU(\infty)$ Toda equation. We give several examples of new, explicit solutions of…

Differential Geometry · Mathematics 2019-11-06 Maciej Dunajski , Alice Waterhouse
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