Results 11 to 20 of about 14,865,566 (335)
Estimation of smooth vector fields on manifolds by optimization on Stiefel group
Учёные записки Казанского университета: Серия Физико-математические науки, 2018 Real data are usually characterized by high dimensionality. However, real data obtained from real sources, due to the presence of various dependencies between data points and limitations on their possible values, form, as a rule, form a small part of the
E.N. Abramov, Yu.A. Yanovich
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3DShape2VecSet: A 3D Shape Representation for Neural Fields and Generative Diffusion Models [PDF]
ACM Transactions on Graphics, 2023 We introduce 3DShape2VecSet, a novel shape representation for neural fields designed for generative diffusion models. Our shape representation can encode 3D shapes given as surface models or point clouds, and represents them as neural fields. The concept
Biao Zhang +3 more
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Symmetries of locally rotationally symmetric Bianchi type V spacetime
Results in Physics, 2023 In this paper, we classify the metric of locally rotationally symmetric Bianchi type V spacetime through its symmetries, including Killing, homothetic and conformal vector fields.
Jamshed Khan +3 more
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Harmonic-Killing vector fields
, 2002 In this paper we consider the harmonicity of the 1-parameter group of local infinitesimaltransformations associated to a vector field on a (pseudo-) Riemannian manifold to study thisclass of vector fields, which we call harmonic-Killing vector ...
Dodson, Christopher +2 more
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Deformations of Vector Fields and Hamiltonian Vector Fields on the Plane [PDF]
Mathematics of Computation, 1995 For the Lie algebras L 1 (
N.W. van den Hijligenberg +2 more
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Minimal sets and chaos in planar piecewise smooth vector fields
Electronic Journal of Qualitative Theory of Differential Equations, 2020 Some aspects concerning chaos and minimal sets in discontinuous dynamical systems are addressed. The orientability dependence of trajectories sliding trough some variety is exploited and new phenomena emerging from this situation are highlighted.
Tiago Carvalho, Rodrigo Euzébio
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The concepts of Lie derivative for discrete-time systems; pp. 253–265 [PDF]
Proceedings of the Estonian Academy of Sciences, 2012 The paper extends the concept of the Lie derivative of the vector field, used in the study of the continuous-time dynamical systems, for the discrete-time case.
Tanel Mullari +3 more
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Frontiers in Physics, 2023 The spin angular momentum (SAM) and orbital angular momentum (OAM) are unique properties of vortex beams and widely used in optical communication and sensing, wherein unambiguous detection of them is of significance.
Yixiong Luo +22 more
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Analysis of eye movements to study drawing in the context of vector fields
Frontiers in Education, 2023 Research has shown that visual representations can substantially enhance the learning and understanding of STEM concepts; despite this, students tend to struggle in using them fluently and consistently.
Larissa Hahn, Pascal Klein
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Feedback linearization of discrete-time nonlinear control systems: computational aspects [PDF]
Proceedings of the Estonian Academy of Sciences, 2020 An alternative solution of the static state feedback linearization problem for the discrete-time case is given. This solution is based on the sequence of distributions, whose computation requires only the knowledge of the backward shift equations.
Tanel Mullari, Ülle Kotta
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