Results 21 to 30 of about 348,565 (319)
Lorentz Harmonics, Squeeze Harmonics and Their Physical Applications [PDF]
Symmetry, 2011 Among the symmetries in physics, the rotation symmetry is most familiar to us. It is known that the spherical harmonics serve useful purposes when the world is rotated. Squeeze transformations are also becoming more prominent in physics, particularly in optical sciences and in high-energy physics.
Kim, Young S., Noz, Marilyn E.
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On bases from cosines in Lebesgue spaces with variable summability index
Journal of Inequalities and Applications, 2016 In this paper the perturbed system of cosines is considered. Under certain conditions on the summability index p ( ⋅ ) $p (\cdot )$ and perturbation, the basicity of this system in Lebesgue spaces L p ( ⋅ ) ( 0 , π ) $L_{p (\cdot )} (0,\pi )$ with ...
Togrul Muradov, Chingiz Hashimov
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Harmonic Voltage Synchronization Using GPS Modules for Grid-Connected Power Converters
IEEE Open Journal of Power Electronics, 2022 Voltage-controlled inverters (VCI) for distributed energy resources allow operation in grid-connected and islanded conditions. Common techniques based on $P$-$f$, $Q$-$V$ droop-control use sinusoidal voltage references for the VCIs, which brings unwanted
Lucas Savoi Araujo +3 more
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ON THE CONVERGENCE OF THE EULER HARMONIC SERIES [PDF]
, 2000 The aim oj this article is to study the convergence oj the Euler harmonic series. Firstly, the results concerning the convergence oj the Smaralldache and Erdos harmonic junctions are reviewed Secondly, the Euler harmonic series is proved to be convergent
Tabirca, Tatiana, Tabirca, Sabin
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Harmonic Morphisms Projecting Harmonic Functions to Harmonic Functions [PDF]
Abstract and Applied Analysis, 2012 For Riemannian manifolds M and N, admitting a submersion ϕ with compact fibres, we introduce the projection of a function via its decomposition into horizontal and vertical components. By comparing the Laplacians on M and N, we determine conditions under which a harmonic function on U = ϕ−1(V) ⊂ M projects down, via its horizontal component, to a ...
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Harmonic diffeomorphisms of noncompact surfaces and Teichmüller spaces [PDF]
, 2002 Let g : M -> N be a quasiconformal harmonic diffeomorphism between noncompact Riemann surfaces M and N. In this paper we study the relation between the map g and the complex structures given on M and N.
Markovic, V. (Vladimir) +1 more
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Bases of exponents with a piecewise linear phase in generalized weighted Lebesgue space
Journal of Inequalities and Applications, 2016 The perturbed system of exponents with a piecewise linear phase, consisting of eigenfunctions of a discontinuous differential operator, is considered in this work.
Tofig Najafov +2 more
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Some Properties of Certain Multivalent Harmonic Functions
Mathematics, 2023 In this paper, various features of a new class of normalized multivalent harmonic functions in the open unit disk are analyzed, including bounds on coefficients, growth estimations, starlikeness and convexity radii.
Georgia Irina Oros +2 more
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Quality Assessment of HDR/WCG Images Using HDR Uniform Color Spaces
Journal of Imaging, 2019 High Dynamic Range (HDR) and Wide Color Gamut (WCG) screens are able to render brighter and darker pixels with more vivid colors than ever. To assess the quality of images and videos displayed on these screens, new quality assessment metrics adapted to ...
Maxime Rousselot +3 more
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Mathematics, 2021 Passive power filters (PPFs) are most effective in mitigating harmonic pollution from power systems; however, the design of PPFs involves several objectives, which makes them a complex multiple-objective optimization problem. This study proposes a method
Nien-Che Yang +2 more
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