Results 21 to 30 of about 84,435 (298)
Journal of Differential Geometry, 2000 A Lie group G in a group pair (D,G), integrating a Lie algebra g in a Manin pair (d,g) has a quasi-Poisson structure. We define the quasi-Poisson actions of such Lie groups G, that generalize the Poisson actions of Poisson Lie groups. We define and study the moment maps for those quasi-Poisson actions which are quasi-hamiltonian. These moment maps take
Alekseev, Anton +1 more
openaire +4 more sources
Poincaré Inequalities and Moment Maps [PDF]
Annales de la Faculté des sciences de Toulouse : Mathématiques, 2014 We discuss a method for obtaining Poincaré-type inequalities on arbitrary convex bodies in ℝ n .
openaire +3 more sources
The linearisation of maps in data assimilation [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2013 For the purpose of linearising maps in data assimilation, the tangent-linear approximation is often used. We compare this with the use of the ‘best linear’ approximation, which is the linear map that minimises the mean square error.
Timothy J. Payne
doaj +1 more source
Moment map flows and the Hecke correspondence for quivers [PDF]
, 2017 In this paper we investigate the convergence properties of the upwards gradient flow of the norm-square of a moment map on the space of representations of a quiver.
Wilkin, Graeme Peter Desmond
core +1 more source
On the transverse Scalar Curvature of a Compact Sasaki Manifold
Complex Manifolds, 2014 We show that the standard picture regarding the notion of stability of constant scalar curvature metrics in Kähler geometry described by S.K. Donaldson [10, 11], which involves the geometry of infinitedimensional groups and spaces, can be applied to the ...
He Weiyong
doaj +1 more source
Salient map of hyperbolas in GPR images
EURASIP Journal on Image and Video Processing, 2018 In ground-penetrating radar (GPR) applications, a salient map is useful for data analysis and building a consensus for data interpretation. In this paper, we present a novel method to map the salient region of a hyperbola using an asymmetry measurement ...
Da Yuan, Deming Fan
doaj +1 more source
Study on bending strength of sandwich U-shaped beam with lattice core
Nihon Kikai Gakkai ronbunshu, 2022 In this paper, the bending collapse behavior of sandwich U-shaped beam with lattice core has been investigated by using finite element analysis. In particular, the effects of geometric properties of lattice core and faceplate on the maximum bending ...
Kota ASAUMI, Kuniharu USHIJIMA
doaj +1 more source
RESEARCHING OF THE JOINT ANGLES ON THE LEGS, DURING THE SUPPORT PERIOD OF THE MOVE STEP IN CLASSIC MOUNTAIN RUNNING [PDF]
Trakia Journal of Sciences, 2023 The purpose of the study is to clarify the kinematic picture of motor activity when overcoming slopes of different steepness in classic mountain running.
K. Kisyov
doaj +1 more source
, 2023 In this work, we use this moment map to relate solutions to certain differential equations to (i) diffeomorphisms of compact Riemann surfaces, (ii) additional Kähler metrics on a given compact Kähler manifold, and (iii) symplectic forms on 4-manifolds ...
Dorado Toro, Daniel Fernando
core +1 more source
A moment map for twisted-Hamiltonian vector fields on locally conformally K\"ahler manifolds
, 2023 We extend the classical Donaldson-Fujiki interpretation of the scalar curvature as moment map in K\"ahler Geometry to the wider framework of locally conformally K\"ahler Geometry.Comment: 19 pages. Minor corrections.
Spotti, Cristiano +3 more
core +2 more sources