Results 1 to 10 of about 26,863 (267)

Characterization of the Evolute Offset of Ruled Surfaces with B-Darboux Frame

open access: yesJournal of New Theory, 2020
In this paper, we first introduce the evolute offset of non-cylindricalruled surfaces with B-Darboux frame in Euclidean 3-space. Then some geometricproperties of this evolute offset of non-cylindrical ruled surface are studied.
Gül Ugur Kaymanli
doaj  

Fractional Curvatures of Equiaffine Curves in Three-Dimensional Affine Space

open access: yesJournal of New Theory
This paper presents a method for computing the curvatures of equiaffine curves in three-dimensional affine space by utilizing local fractional derivatives.
Meltem Öğrenmiş
doaj   +1 more source

Extended Darboux frame curvatures of Frenet curves lying on parametric 3-surfaces

open access: yesKuwait Journal of Science, 2019
In this paper, we consider a Frenet curve lying on a parametric hypersurface in 4-dimensional Euclidean space and obtain the expressions of its curvatures with respect to the ...
Bahar Uyar Düldül, Mustafa Düldül
doaj  

Discrete Geometry from Quantum Walks

open access: yesCondensed Matter, 2019
A particular family of Discrete Time Quantum Walks (DTQWs) simulating fermion propagation in 2D curved space-time is revisited. Usual continuous covariant derivatives and spin-connections are generalized into discrete covariant derivatives along the ...
Fabrice Debbasch
doaj   +1 more source

The influence of elongation exercises on the anterior-posterior spine curvatures

open access: yesBiomedical Human Kinetics, 2014
Introduction: Elongation exercises are designed to reduce existing pathological or increased physiological curvatures of the spine. The aim of the study was to evaluate the changes occurring in the parameters describing the anterior-posterior spinal ...
Drzał-Grabiec Justyna   +4 more
doaj   +1 more source

Killing Reeb vector fields on some almost contact manifolds [PDF]

open access: yesMathematica Bohemica
We discuss the geometric impact of a Killing vector field on certain almost contact manifolds with constant sectional curvatures. We prove that the additional structures given in A. De Nicola, G. Dileo, I. Yudin (2018) can be naturally constructed in the
Fortuné Massamba
doaj   +1 more source

Forward Curvatures on Time Scales

open access: yesAbstract and Applied Analysis, 2011
We also introduce forward curvature of a curve and give some formulas to calculate forward curvature of a curve on time scales which may be an arbitrary closed subsets of the set of all real numbers.
M. S. Seyyidoglu   +4 more
doaj   +1 more source

Combinatorial pth Calabi flows for total geodesic curvatures in spherical background geometry

open access: yesAdvances in Nonlinear Analysis
The concept of combinatorial pth Calabi flow is proposed for finding circle packing metrics with prescribed curvatures. It has been studied under the Euclidean and hyperbolic background geometries.
Liu Bin, Li Lishan, Qi Yi
doaj   +1 more source

Comparative evaluation of curvature severity of mesiobuccal canals in permanent maxillary 1st molar using multiple complexity risk criteria: A cone-beam computed tomography-based cross-sectional study of central Indian subpopulation

open access: yesEndodontology
Aim: The study is aimed to evaluate the curvature severity in Mesiobuccal (MB) canals of permanent maxillary 1st molars along sagittal and coronal planes using cone-beam computed tomography in a Central Indian subpopulation.
Mahima Mathur   +5 more
doaj   +1 more source

Exploring the space of graphs with fixed discrete curvatures

open access: yesJournal of Physics: Complexity
Discrete curvatures are quantities associated to the nodes and edges of a graph that reflect the local geometry around them. These curvatures have a rich mathematical theory and they have recently found success as a tool to analyze networks across a wide
Michelle Roost   +3 more
doaj   +1 more source

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