Results 11 to 20 of about 522,797 (308)
The Poincaré Index and Its Applications
Universe, 2022 We discuss an approach to the problem of calculating the local topological index of vector fields given on complex spaces or varieties with singularities developed by the author over the past few years. Our method is based on the study of the homology of
Alexander G. Aleksandrov
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Mapping local singularities using magnetic data to investigate the volcanic rocks of the Qikou depression, Dagang oilfield, eastern China [PDF]
Nonlinear Processes in Geophysics, 2013 The spatial structural characteristics of geological anomaly, including singularity and self-similarity, can be analysed using fractal or multifractal modelling. Here we apply the multifractal methods to potential fields to demonstrate that singularities
G. Chen, Q. Cheng, T. Liu, Y. Yang
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Enhancement of Optical Spin-Orbit Coupling in Anisotropic ENZ Metamaterials
IEEE Photonics Journal, 2023 Vector vortex beams which possess complex intensity and polarisation patterns, and phase or polarisation singularities are important in a variety of applications ranging from high resolution imaging and data transmission to nonlinear optics and quantum ...
Vittorio Aita, Anatoly V. Zayats
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Polarization singularities and Möbius strips in sound and water-surface waves [PDF]
The Physics of Fluids, 2021 We show that polarization singularities, generic for any complex vector field but so far mostly studied for electromagnetic fields, appear naturally in inhomogeneous yet monochromatic sound and water-surface (e.g., gravity or capillary) wave fields in ...
K. Bliokh +5 more
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Celestial insights into the S-matrix bootstrap
Journal of High Energy Physics, 2022 We consider 2-2 scattering in four spacetime dimensions in Celestial variables. Using the crossing symmetric dispersion relation (CSDR), we recast the Celestial amplitudes in terms of crossing symmetric partial waves.
Sudip Ghosh +2 more
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Proliferation of non-linear excitations in the piecewise-linear perceptron
SciPost Physics, 2021 We investigate the properties of local minima of the energy landscape of a continuous non-convex optimization problem, the spherical perceptron with piecewise linear cost function and show that they are critical, marginally stable and displaying a set of
Antonio Sclocchi, Pierfrancesco Urbani
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Company welfare in modern Argentine railways: characteristics and challenges (1890-1920)
Revista Mundos do Trabalho, 2021 This article explores company welfare programs in the railways in modern Argentina from the 1890s to the 1920s. It concentrates on the singularities of these companies' strategies, considering that the local society was shaped by a process of mass ...
Silvana A. Palermo
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LOCAL VANISHING AND HODGE FILTRATION FOR RATIONAL SINGULARITIES [PDF]
Journal of the Institute of Mathematics of Jussieu, 2017 Given an $n$-dimensional variety $Z$ with rational singularities, we conjecture that if $f:Y\rightarrow Z$ is a resolution of singularities whose reduced exceptional divisor $E$ has simple normal crossings, then $$\begin{eqnarray}\displaystyle R^{n-1}f_{\
M. Mustaţă, S. Olano, M. Popa
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Nonpolar singularities of local zeta functions in some smooth case [PDF]
Transactions of the American Mathematical Society, 2018 It is known that local zeta functions associated with real analytic functions can be analytically continued as meromorphic functions to the whole complex plane.
Joe Kamimoto, Toshihiro Nose
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Restauro Archeologico, 2021 The civil towers in Pavia are a distinctive element of the city’s architectural heritage, dating back to the Medieval Age as a statement of the lordship’s power and wealth.
Sandro Parrinello +2 more
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