Results 11 to 20 of about 12,450 (260)
Stability of General Newton Functional Equations for Logarithmic Spirals
Advances in Difference Equations, 2008 We investigate the generalized Hyers-Ulam stability of Newton functional equations for logarithmic spirals.
John Michael Rassias, Soon-Mo Jung
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A Logarithmic-Amplitude Polar Diagram [PDF]
Modeling, Identification and Control, 2001 A polar diagram where the amplitude of the transfer function is on a logarithmic scale, is presented. This gives a one-size-fits-all diagram with no need for zooming in and out, and no need for additional reasoning about infinite-radius encirclements ...
Trond Andresen
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Golden Spirals and Scalp Whorls: Nature's Own Design for Rapid Expansion. [PDF]
PLoS ONE, 2016 This paper documents what began as an exercise in curiosity-logarithmic spiral designs abound in nature-in galaxies, flowers, even pinecones, and on human scalps as whorls. Why are humans the only primates to have whorls on the scalp? Is the formation of
Sharad P Paul
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Geometric Properties of Planar and Spherical Interception Curves
Axioms, 2023 In this paper, some geometric properties of the plane interception curve defined by a nonlinear ordinary differential equation are discussed. Its parametric representation is used to find the limits of some triangle elements associated with the curve ...
Yagub N. Aliyev
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Nonlinear Single-Armed Spiral Density Waves in Nearly Keplerian Disks [PDF]
, 1999 Single-armed, stationary density waves can propagate in very weakly self-gravitating gas disks dominated by a central mass. Examples include circumstellar disks of protostars and molecular disks in galactic nuclei.
Goodman, Jeremy, Lee, Erick
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Broadband Microwave Absorption by Logarithmic Spiral Metasurface [PDF]
Scientific Reports, 2019 AbstractMetamaterials have enabled the design of electromagnetic wave absorbers with unprecedented performance. Conventional metamaterial absorbers usually employ multiple structure components in one unit cell to achieve broadband absorption. Here, a simple metasurface microwave absorber is proposed that has one metal-backed logarithmic spiral ...
Shubo Wang, Bo Hou, Che Ting Chan
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The Elliptic Logarithmic Spiral [PDF]
Nature, 1922 I AM much obliged to Mr. Wright for his correction (NATURE, July 8, p. 40). I had made a search in English and Continental books on curves and concluded that this spiral had been overlooked as a curve. But it appears to have been recognised in connexion with the spherical pendulum. Prof. Lamb in his “Dynamics,” p.
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Asymptotics of the entire functions with $\upsilon$-density of zeros along the logarithmic spirals
Karpatsʹkì Matematičnì Publìkacìï, 2019 Let $\upsilon$ be the growth function such that $r\upsilon'(r)/\upsilon (r) \to 0$ as $r \to +\infty$, $l_\varphi^c = \{z=te^{i(\varphi+c \ln t)}, 1 \leqslant t < +\infty\}$ be the logarithmic spiral, $f$ be the entire function of zero order.
M.V. Zabolotskyj, Yu.V. Basiuk
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Bulge formation from SSCs in a responding cuspy dark matter halo [PDF]
, 2007 We simulate the bulge formation in very late-type dwarf galaxies from circumnuclear super star clusters (SSCs) moving in a responding cuspy dark matter halo (DMH). The simulations show that (1) the response of DMH to sinking of SSCs is detectable only in
Cora S. A. +6 more
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Logarithmic spirals and continue triangles
Journal of Computational and Applied Mathematics, 2016 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
ANATRIELLO, GIUSEPPINA +1 more
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