Results 1 to 10 of about 1,461,044 (179)
Stable piecewise polynomial vector fields [PDF]
Electronic Journal of Differential Equations, 2012 Let $N={y>0}$ and $S={y<0}$ be the semi-planes of $mathbb{R}^2$ having as common boundary the line $D={y=0}$. Let $X$ and $Y$ be polynomial vector fields defined in $N$ and $S$, respectively, leading to a discontinuous piecewise polynomial vector ...
Claudio Pessoa, Jorge Sotomayor
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Polynomial poly-vector fields [PDF]
, 2008 In this text we give a decomposition result on polynomial poly-vector fields generalizing a result on the decomposition of homogeneous Poisson structures.
Klinker, Frank
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Mathematics, 2023 We introduce a special vector field ω on a Riemannian manifold (Nm,g), such that the Lie derivative of the metric g with respect to ω is equal to ρRic, where Ric is the Ricci tensor of (Nm,g) and ρ is a smooth function on Nm.
Hanan Alohali, Sharief Deshmukh
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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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Bianchi I Cosmology and Scalar Vector Tensor Brans Dicke Gravity [PDF]
Iranian Journal of Astronomy and Astrophysics, 2021 We consider Brans Dicke scalar vector tensor gravity to study an inflationary scenario of the accelerating expansion of theuniverse for which the anisotropy property occurs.
Hossein Ghaffarnejad, Hoda Gholipour
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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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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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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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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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