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It has recently been noticed that the degeneracies of the Poisson bracket of linearized gravity on constant curvature Lorentzian manifold can be described in terms of the cohomologies of a certain complex of differential operators. This…

广义相对论与量子宇宙学 · 物理学 2017-04-11 Igor Khavkine

We geometrize the constructions of twisted Poisson modules introduced by Luo-Wang-Wu, and Poisson chain complexes with coefficients in Poisson modules defined in the algebraic setting to the geometric setting of Poisson manifolds. We then…

微分几何 · 数学 2025-10-20 Tiancheng Qi , Quanshui Wu

Let G be a complex reductive group and D a finite subset of a compact Riemann surface X. It was shown in [BJ] that the moduli space of G-characters of the complement of D in X has a natural Poisson structure. We show that the moduli space…

辛几何 · 数学 2025-08-20 Indranil Biswas , Lisa C. Jeffrey

This paper attempts to investigate the space of various characteristic classes for smooth manifold bundles with local system on the total space inducing a finite holonomy covering. These classes are known as twisted higher torsion classes.…

K理论与同调 · 数学 2018-03-16 Christopher Ohrt

We derive a formula for the the modular class of a Lie algebroid with a regular twisted Poisson structure in terms of a canonical Lie algebroid representation of the image of the Poisson map. We use this formula to compute the modular…

辛几何 · 数学 2012-12-05 Yvette Kosmann-Schwarzbach , Milen Yakimov

Let G be a Lie group and g its Lie algebra. We develop a theory of quasi Poisson structures relative to a not necessarily non-degenerate Ad-invariant symmetric 2-tensor in the tensor square of g and one of general not necessarily…

微分几何 · 数学 2026-01-22 Johannes Huebschmann

The moduli space of $G$-bundles on an elliptic curve with additional flag structure admits a Poisson structure. The bivector can be defined using double loop group, loop group and sheaf cohomology constructions. We investigate the links…

代数几何 · 数学 2007-11-17 David Balduzzi

In the framework of the connection theory, a contravariant analog of the Sternberg coupling procedure is developed for studying a natural class of Poisson structures on fiber bundles, called coupling tensors. We show that every Poisson…

辛几何 · 数学 2007-05-23 Yurii Vorobjev

Using the idea of a generalized Kaehler structure, which is a pair of commuting generalized complex structures, we construct bihermitian metrics on the projective plane and the product of two projective lines, and show that any such…

微分几何 · 数学 2009-11-11 Nigel Hitchin

This paper presents the theory of holomorphic vector valued modular forms from a geometric perspective. More precisely, we define certain holomorphic vector bundles on the modular orbifold of generalized elliptic curves whose sections are…

数论 · 数学 2016-01-11 Luca Candelori , Cameron Franc

The convex hull generated by the restriction to the unit ball of a stationary Poisson point process in the $d$-dimensional Euclidean space is considered. By establishing sharp bounds on cumulants, exponential estimates for large deviation…

概率论 · 数学 2015-12-15 Julian Grote , Christoph Thaele

The purpose of the present work is to describe a dequantization procedure for topological modules over a deformed algebra. We define the characteristic variety of a topological module as the common zeroes of the annihilator of the…

表示论 · 数学 2015-06-26 Ali Baklouti , Sami Dhieb , Dominique Manchon

In [arXiv:2008.04625] the authors constructed a classifying space for polystable holomorphic vector bundles on a compact K\"ahler manifold using analytic GIT theory. The aim of this article is to show that this classifying space taken in…

代数几何 · 数学 2022-03-02 Nicholas Buchdahl , Georg Schumacher

Let $G$ be a Poisson Lie group and $\g$ its Lie bialgebra. Suppose that $\g$ is a group Lie bialgebra. This means that there is an action of a discrete group $\Gamma$ on $G$ deforming the Poisson structure into coboundary equivalent ones.…

量子代数 · 数学 2007-05-23 Gilles Halbout , Xiang Tang

We study the tangential Poisson cohomology (TP-cohomology) of regular Poisson manifolds, first defined by Lichnerowicz using contravariant tensor fields. We show that for a regular Poisson manifold M, the TP-cohomology coincides with the…

微分几何 · 数学 2007-05-23 Angela Gammella

We give a characterization of linear canonoid transformations on symplectic manifolds and we use it to generate biHamiltonian structures for some mechanical systems. Utilizing this characterization we also study the behavior of the harmonic…

数学物理 · 物理学 2017-10-10 Giovanni Rastelli , Manuele Santoprete

We study generalized complex manifolds from the point of view of symplectic and Poisson geometry. We start by showing that every generalized complex manifold admits a canonical Poisson structure. We use this fact, together with Weinstein's…

微分几何 · 数学 2007-05-23 Mohammed Abouzaid , Mitya Boyarchenko

We study Lie-Hamilton systems on the plane, i.e. systems of first-order differential equations describing the integral curves of a $t$-dependent vector field taking values in a finite-dimensional real Lie algebra of planar Hamiltonian…

数学物理 · 物理学 2015-02-18 A. Ballesteros , A. Blasco , F. J. Herranz , J. de Lucas , C. Sardón

We consider the Poisson sigma model associated to a Poisson manifold. The perturbative quantization of this model yields the Kontsevich star product formula. We study here the classical model in the Hamiltonian formalism. The phase space is…

辛几何 · 数学 2020-05-29 Alberto S. Cattaneo , Giovanni Felder

We consider a class of homogeneous manifolds over a simple Lie group which appears in the problem of classification of homogeneous manifolds with reductive subgroups of maximal rank as stabilizer of a point. We prove that any manifold of…

量子代数 · 数学 2007-05-23 Vadim Ostapenko