Results 31 to 40 of about 4,762 (252)
Abstract and Applied Analysis, 2021 In this work, we consider the Darboux frame T,V,U of a curve lying on an arbitrary regular surface and we construct ruled surfaces having a base curve which is a V-direction curve.
Nidal Echabbi, Amina Ouazzani Chahdi
doaj +1 more source
Geodesics and Killing vector fields on the tangent sphere bundle [PDF]
Nagoya Mathematical Journal, 1998 Abstract.We show that any Killing vector field on the unit tangent sphere bundle with Sasaki metric of a space of constant curvaturek≠ 1 is fiber preserving by studying some property of geodesies on the bundle. As a consequence, any Killing vector field on the unit tangent sphere bundle of a space of constant curvaturek≠ 1 can be extended to a Killing ...
Konno, Tatsuo, Tanno, Shukichi
openaire +3 more sources
Geodesic Nature and Quantization of Shift Vector
Chinese Physics LettersAbstract We present the geodesic nature and quantization of geometric shift vector in quantum systems, with the parameter space defined by the Bloch momentum, using the Wilson loop approach. Our analysis extends to include bosonic phonon drag shift vectors with non-vertical transitions.
Wang, Hua, Chang, Kai
openaire +2 more sources
Advanced Science, EarlyView.scTIDE identifies single‐cell tipping points by combining manifold‐based graph representations with optimal‐transport conditional flow matching, which preserves intrinsic topology and models distributional dynamics. It supports critical‐transition detection at individual‐cell resolution, prediction of unseen cells, and dimensionality reduction and ...
Jiayuan Zhong +6 more
wiley +1 more source
Geodesic Mappings of Vn(K)-Spaces and Concircular Vector Fields
Mathematics, 2019 In the present paper, we study geodesic mappings of special pseudo-Riemannian manifolds called V n ( K ) -spaces. We prove that the set of solutions of the system of equations of geodesic mappings on V n ( K ) -spaces forms a ...
Igor G. Shandra, Josef Mikeš
doaj +1 more source
Advanced Science, EarlyView.Mice can transfer the learned rule of spatial working memory to guide similar but novel tasks. Hippocampal CA3 populational activity dynamically reorganize during memory generalization, shifting from task‐specific to generalized coding over testing days. Sparse yet redundant neural representations of CA3 enable rule transfer and cognitive map formation,
Da Song +8 more
wiley +1 more source
Tidal forces in Kiselev black hole
European Physical Journal C: Particles and Fields, 2017 The aim of this paper is to examine the tidal forces occurring in a Kiselev black hole surrounded by radiation and dust fluids. It is noted that the radial and angular components of the tidal force change the sign between event and Cauchy horizons.
M. Umair Shahzad, Abdul Jawad
doaj +1 more source
EURASIP Journal on Wireless Communications and Networking, 2020 The unmanned aerial vehicle (UAV) can extend the network coverage and improve the system throughput for 5th generation (5G) communication systems; hence, it receives a lot of attention recently.
Wen Zhou +5 more
doaj +1 more source
GEODESIC VECTORS ON $5$-DIMENSIONAL HOMOGENEOUS NILMANIFOLDS
Matematički VesnikSummary: In this paper, firstly we study geodesic vectors for the \(m\)-th root homogeneous Finsler space admitting \((\alpha,\beta)\)-type. Then we obtain the necessary and sufficient condition for an arbitrary non-zero vector to be a geodesic vector for the \(m\)-th root homogeneous Finsler metric under mild conditions. Finally, we consider a quartic
Shanker, Gauree +2 more
openaire +2 more sources
Quantum‐Like Dynamics in Whole‐Brain Models of the Human Connectome
Advanced Science, EarlyView.Quantum‐like dynamics in the human brain. The level of quantum‐like behavior in a non‐quantum system of coupled oscillators is regulated by the spectral gap of the coupling graph. Whole‐brain modelling using QL fits the empirical data significantly better and has a lower model‐derived energy cost than the non‐QL model.
Gustavo Deco +5 more
wiley +1 more source