Results 61 to 70 of about 377,650 (220)
IEEE Access, 2019 Multi-label learning deals with problems in which each instance is associated with a set of labels. Most multi-label learning algorithms ignore the potential distribution differences between the training domain and the test domain in the instance space ...
Siyu Jiang +6 more
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The intrinsic geometry of a convex surface in Galilean space
Қарағанды университетінің хабаршысы. Математика сериясыThis paper investigates the intrinsic geometry of a convex surface in the Galilean space. The Galilean space, as a special case of a pseudo-Euclidean space, possesses a degenerate metric.
A. Artykbaev, B.M. Sultanov
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Journal of Inequalities and Applications, 2018 Given a null hypersurface of a Lorentzian manifold, we isometrically immerse a null hypersurface equipped with the Riemannian metric (induced on it by the rigging) into a Riemannian manifold suitably constructed on the Lorentzian manifold.
Karimumuryango Ménédore
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Intrinsic Optimal Control for Mechanical Systems on Lie Group
Advances in Mathematical Physics, 2017 The intrinsic infinite horizon optimal control problem of mechanical systems on Lie group is investigated. The geometric optimal control problem is built on the intrinsic coordinate-free model, which is provided with Levi-Civita connection.
Chao Liu, Shengjing Tang, Jie Guo
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A Similarity Metric Method for Contour Line Groups Considering Terrain Features
ISPRS International Journal of Geo-InformationContour lines, as the primary elements of fundamental geospatial data, have long been a research focus for similarity measurement. With the evolution of cartographic generalization, the representation of contour lines across varying scales must maintain ...
Haoyue Qian +4 more
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Robust Recovery of Corrupted Image Data Based on $L_{1-2}$ Metric
IEEE Access, 2018 For removing noises and recovering intrinsic structure from corrupted image data, a classic modeling approach is based on sparsity assumption. In traditionally, the sparsity is measured by L1-norm.
Fanlong Zhang +3 more
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Intrinsic connections for Levi metrics
Manuscripta Mathematica, 1992 It is supposed that a CR manifold carries a metric which, on the maximal complex subspace of the tangent space, agrees with a choice of a Levi form. By using Cartan's moving frame method the local equivalence problem is solved. Then this solution is interpreted as a connection in a principal bundle. Finally, there are obtained the curvature and torsion
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Measurement of job motivation in TEDS-M: testing for invariance across countries and cultures
Large-scale Assessments in Education, 2016 The paper presents the challenges of cross-country and cross-cultural research on the motivation to become a mathematics teacher based on data from the “Teacher Education and Development Study in Mathematics (TEDS-M)”.
Christin Laschke, Sigrid Blömeke
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On the holomorphic curvature of some intrinsic metrics [PDF]
Proceedings of the American Mathematical Society, 1977 If G is a hyperbolic manifold in the sense of Kobayashi and the differential Kobayashi metric K G {K_G} is of class C 2 {C^2} , then the holomorphic curvature of K G {K_G} is greater than or ...
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Massive particle surfaces and black hole shadows from intrinsic curvature
European Physical Journal C: Particles and FieldsIn a recent article Phys. Rev. D. 111, 064001 (2025) a new geometric approach for studying massive particle surfaces was proposed. Using the Gaussian and geodesic curvatures defined over a two dimensional Riemannian metric, a criteria for the existence ...
Boris Bermúdez-Cárdenas +1 more
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